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N819PR Nose Gear Failure
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galinhdz(at)gmail.com
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PostPosted: Tue Jul 22, 2014 10:47 am    Post subject: N819PR Nose Gear Failure Reply with quote

Yesterday, after a day of flying, the nose gear on my TR-4 failed just before I exited the runway. The landings (three that day) were super smooth, which is not very common for me. I am not a mechanical engineer and didn't sleep at a Holiday Inn Express but preliminary check looks like the front pin on the nose gear assembly failed. When I went to make the right turn off the runway, the rear pin then failed which let the entire assembly rotate 180 degrees to the left. Once the assembly was 180 degrees off center the tube couldn't hold the stress, it failed and the whole thing collapsed.
 
The worst part is if I would have taken the previous exit it would have happened on the non-movement area of the airport. But since I taxied to an exit closer to my hangar it happened on the runway so now the FAA is involved. Like I said, "Murphy is alive and well in aviation".
 
Depending on the firewall condition it could cost more to repair than the insured value. When the insurance company tells me what they are going to do about the claim I will make a decision to repair or to part the airplane out.
 
Here are some photo's of the airplane on the runway.
 
Sad


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Robert Reed



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Location: Dallas/Ft.Worth

PostPosted: Tue Jul 22, 2014 11:13 am    Post subject: N819PR Nose Gear Failure Reply with quote

Galin,

I am sorry to hear about this. I know how close you were getting to your around the world trip and hope that this is just a minor setback.

From the photos it looks like the damage should be isolated to cowling and engine. The engine will be the big hit since the engine was running and the resulting prop strike will probably require a full disassembly inspection.

Keep us informed on your progress and anything we can do to help.

Bob Reed



From: Galin Hernandez <galinhdz(at)gmail.com>
To: "kis-list(at)matronics.com" <kis-list(at)matronics.com>
Sent: Tuesday, July 22, 2014 1:46 PM
Subject: N819PR Nose Gear Failure


Yesterday, after a day of flying, the nose gear on my TR-4 failed just before I exited the runway. The landings (three that day) were super smooth, which is not very common for me. I am not a mechanical engineer and didn't sleep at a Holiday Inn Express but preliminary check looks like the front pin on the nose gear assembly failed. When I went to make the right turn off the runway, the rear pin then failed which let the entire assembly rotate 180 degrees to the left. Once the assembly was 180 degrees off center the tube couldn't hold the stress, it failed and the whole thing collapsed.

The worst part is if I would have taken the previous exit it would have happened on the non-movement area of the airport. But since I taxied to an exit closer to my hangar it happened on the runway so now the FAA is involved. Like I said, "Murphy is alive and well in aviation".

Depending on the firewall condition it could cost more to repair than the insured value. When the insurance company tells me what they are going to do about the claim I will make a decision to repair or to part the airplane out.

Here are some photo's of the airplane on the runway.

Sad
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PostPosted: Tue Jul 22, 2014 12:11 pm    Post subject: N819PR Nose Gear Failure Reply with quote

So sorry to hear this Galin.  It doesn't look bad enough to part-out but I know how insurance companies are.

Al Rosa

On Tue, Jul 22, 2014 at 2:46 PM, Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)> wrote:
[quote] Yesterday, after a day of flying, the nose gear on my TR-4 failed just before I exited the runway. The landings (three that day) were super smooth, which is not very common for me. I am not a mechanical engineer and didn't sleep at a Holiday Inn Express but preliminary check looks like the front pin on the nose gear assembly failed. When I went to make the right turn off the runway, the rear pin then failed which let the entire assembly rotate 180 degrees to the left. Once the assembly was 180 degrees off center the tube couldn't hold the stress, it failed and the whole thing collapsed.
 
The worst part is if I would have taken the previous exit it would have happened on the non-movement area of the airport. But since I taxied to an exit closer to my hangar it happened on the runway so now the FAA is involved. Like I said, "Murphy is alive and well in aviation".
 
Depending on the firewall condition it could cost more to repair than the insured value. When the insurance company tells me what they are going to do about the claim I will make a decision to repair or to part the airplane out.
 
Here are some photo's of the airplane on the runway.
 
Sad

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PostPosted: Tue Jul 22, 2014 12:44 pm    Post subject: N819PR Nose Gear Failure Reply with quote

With it being insured at only $75,000, it might wind up being more than 50% just to repair it. If I do part it out, a GREAT plug-n-play instrument panel for a TR-4 will be available real soon.
 
Wink

On Tue, Jul 22, 2014 at 4:10 PM, Alfred Rosa <fredorosa(at)gmail.com (fredorosa(at)gmail.com)> wrote:
[quote]So sorry to hear this Galin.  It doesn't look bad enough to part-out but I know how insurance companies are.

Al Rosa

On Tue, Jul 22, 2014 at 2:46 PM, Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)> wrote:
Quote:
Yesterday, after a day of flying, the nose gear on my TR-4 failed just before I exited the runway. The landings (three that day) were super smooth, which is not very common for me. I am not a mechanical engineer and didn't sleep at a Holiday Inn Express but preliminary check looks like the front pin on the nose gear assembly failed. When I went to make the right turn off the runway, the rear pin then failed which let the entire assembly rotate 180 degrees to the left. Once the assembly was 180 degrees off center the tube couldn't hold the stress, it failed and the whole thing collapsed.
 
The worst part is if I would have taken the previous exit it would have happened on the non-movement area of the airport. But since I taxied to an exit closer to my hangar it happened on the runway so now the FAA is involved. Like I said, "Murphy is alive and well in aviation".
 
Depending on the firewall condition it could cost more to repair than the insured value. When the insurance company tells me what they are going to do about the claim I will make a decision to repair or to part the airplane out.
 
Here are some photo's of the airplane on the runway.
 
Sad



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PostPosted: Tue Jul 22, 2014 12:47 pm    Post subject: N819PR Nose Gear Failure Reply with quote

It will require a complete tear down inspection and depending on what they find might even need a new engine. The propeller / carb took the brunt of the severe impact so there has to be internal damage to the engine in addition to whatever external damage we see.
 
Sad

On Tue, Jul 22, 2014 at 3:13 PM, Robert Reed <robertr237(at)att.net (robertr237(at)att.net)> wrote:
[quote] Galin,
 
I am sorry to hear about this.  I know how close you were getting to your around the world trip and hope that this is just a minor setback. 
 
From the photos it looks like the damage should be isolated to cowling and engine.  The engine will be the big hit since the engine was running and the resulting prop strike will probably require a full disassembly inspection. 
 
Keep us informed on your progress and anything we can do to help.
 
Bob Reed
 



From: Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)>
To: "kis-list(at)matronics.com (kis-list(at)matronics.com)" <kis-list(at)matronics.com (kis-list(at)matronics.com)>
Sent: Tuesday, July 22, 2014 1:46 PM
Subject: KIS-List: N819PR Nose Gear Failure


Yesterday, after a day of flying, the nose gear on my TR-4 failed just before I exited the runway. The landings (three that day) were super smooth, which is not very common for me. I am not a mechanical engineer and didn't sleep at a Holiday Inn Express but preliminary check looks like the front pin on the nose gear assembly failed. When I went to make the right turn off the runway, the rear pin then failed which let the entire assembly rotate 180 degrees to the left. Once the assembly was 180 degrees off center the tube couldn't hold the stress, it failed and the whole thing collapsed.
 
The worst part is if I would have taken the previous exit it would have happened on the non-movement area of the airport. But since I taxied to an exit closer to my hangar it happened on the runway so now the FAA is involved. Like I said, "Murphy is alive and well in aviation".
 
Depending on the firewall condition it could cost more to repair than the insured value. When the insurance company tells me what they are going to do about the claim I will make a decision to repair or to part the airplane out.
 
Here are some photo's of the airplane on the runway.
 
Sad


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PostPosted: Tue Jul 22, 2014 12:47 pm    Post subject: N819PR Nose Gear Failure Reply with quote

The damage looks minimal…tear down inspection being the most costly repair (with resulting needed replacement parts)…then a new and improved new nose gear…hope the aircraft returns to the air soon

From: owner-kis-list-server(at)matronics.com [mailto:owner-kis-list-server(at)matronics.com] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:44 PM
To: kis-list(at)matronics.com
Subject: Re: KIS-List: N819PR Nose Gear Failure

With it being insured at only $75,000, it might wind up being more than 50% just to repair it. If I do part it out, a GREAT plug-n-play instrument panel for a TR-4 will be available real soon.

Wink

On Tue, Jul 22, 2014 at 4:10 PM, Alfred Rosa <fredorosa(at)gmail.com<mailto:fredorosa(at)gmail.com>> wrote:
So sorry to hear this Galin. It doesn't look bad enough to part-out but I know how insurance companies are.

Al Rosa

On Tue, Jul 22, 2014 at 2:46 PM, Galin Hernandez <galinhdz(at)gmail.com<mailto:galinhdz(at)gmail.com>> wrote:
Yesterday, after a day of flying, the nose gear on my TR-4 failed just before I exited the runway. The landings (three that day) were super smooth, which is not very common for me. I am not a mechanical engineer and didn't sleep at a Holiday Inn Express but preliminary check looks like the front pin on the nose gear assembly failed. When I went to make the right turn off the runway, the rear pin then failed which let the entire assembly rotate 180 degrees to the left. Once the assembly was 180 degrees off center the tube couldn't hold the stress, it failed and the whole thing collapsed.

The worst part is if I would have taken the previous exit it would have happened on the non-movement area of the airport. But since I taxied to an exit closer to my hangar it happened on the runway so now the FAA is involved. Like I said, "Murphy is alive and well in aviation".

Depending on the firewall condition it could cost more to repair than the insured value. When the insurance company tells me what they are going to do about the claim I will make a decision to repair or to part the airplane out.

Here are some photo's of the airplane on the runway.

Sad
et="_blank">http://www.matronics.com/Navigator?KIS-List

tp://forums.matronics.com

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PostPosted: Tue Jul 22, 2014 12:53 pm    Post subject: N819PR Nose Gear Failure Reply with quote

Jerry; Do you know where to get a "new and improved" nose gear? One rated for about 150,000lbs? Wink
On Tue, Jul 22, 2014 at 4:47 PM, Conners, Jerry L <jconners(at)dot.state.nv.us (jconners(at)dot.state.nv.us)> wrote:
Quote:

The damage looks minimal…tear down inspection being the most costly repair (with resulting needed replacement parts)…then a new and improved new nose gear…hope the aircraft returns to the air soon
 
From: owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com) [mailto:owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com)] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:44 PM
To: kis-list(at)matronics.com (kis-list(at)matronics.com)
Subject: Re: N819PR Nose Gear Failure

 
With it being insured at only $75,000, it might wind up being more than 50% just to repair it. If I do part it out, a GREAT plug-n-play instrument panel for a TR-4 will be available real soon.

 

Wink



 
On Tue, Jul 22, 2014 at 4:10 PM, Alfred Rosa <fredorosa(at)gmail.com (fredorosa(at)gmail.com)> wrote:
So sorry to hear this Galin.  It doesn't look bad enough to part-out but I know how insurance companies are.
 

Al Rosa



 
On Tue, Jul 22, 2014 at 2:46 PM, Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)> wrote:

Yesterday, after a day of flying, the nose gear on my TR-4 failed just before I exited the runway. The landings (three that day) were super smooth, which is not very common for me. I am not a mechanical engineer and didn't sleep at a Holiday Inn Express but preliminary check looks like the front pin on the nose gear assembly failed. When I went to make the right turn off the runway, the rear pin then failed which let the entire assembly rotate 180 degrees to the left. Once the assembly was 180 degrees off center the tube couldn't hold the stress, it failed and the whole thing collapsed.

 

The worst part is if I would have taken the previous exit it would have happened on the non-movement area of the airport. But since I taxied to an exit closer to my hangar it happened on the runway so now the FAA is involved. Like I said, "Murphy is alive and well in aviation".

 

Depending on the firewall condition it could cost more to repair than the insured value. When the insurance company tells me what they are going to do about the claim I will make a decision to repair or to part the airplane out.

 

Here are some photo's of the airplane on the runway.

 

Sad




 
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PostPosted: Tue Jul 22, 2014 12:57 pm    Post subject: N819PR Nose Gear Failure Reply with quote

I would design myself and then have it fabricated in a manner that Lyle has done in the past…no short cuts in the construction and using Paul Lamar’s worst case math to determine the loads on impact.

From: owner-kis-list-server(at)matronics.com [mailto:owner-kis-list-server(at)matronics.com] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:53 PM
To: kis-list(at)matronics.com
Subject: Re: KIS-List: N819PR Nose Gear Failure

Jerry; Do you know where to get a "new and improved" nose gear? One rated for about 150,000lbs? Wink

On Tue, Jul 22, 2014 at 4:47 PM, Conners, Jerry L <jconners(at)dot.state.nv.us<mailto:jconners(at)dot.state.nv.us>> wrote:
The damage looks minimal…tear down inspection being the most costly repair (with resulting needed replacement parts)…then a new and improved new nose gear…hope the aircraft returns to the air soon

From: owner-kis-list-server(at)matronics.com<mailto:owner-kis-list-server(at)matronics.com> [mailto:owner-kis-list-server(at)matronics.com<mailto:owner-kis-list-server(at)matronics.com>] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:44 PM
To: kis-list(at)matronics.com<mailto:kis-list(at)matronics.com>
Subject: Re: KIS-List: N819PR Nose Gear Failure

With it being insured at only $75,000, it might wind up being more than 50% just to repair it. If I do part it out, a GREAT plug-n-play instrument panel for a TR-4 will be available real soon.

Wink

On Tue, Jul 22, 2014 at 4:10 PM, Alfred Rosa <fredorosa(at)gmail.com<mailto:fredorosa(at)gmail.com>> wrote:
So sorry to hear this Galin. It doesn't look bad enough to part-out but I know how insurance companies are.

Al Rosa

On Tue, Jul 22, 2014 at 2:46 PM, Galin Hernandez <galinhdz(at)gmail.com<mailto:galinhdz(at)gmail.com>> wrote:
Yesterday, after a day of flying, the nose gear on my TR-4 failed just before I exited the runway. The landings (three that day) were super smooth, which is not very common for me. I am not a mechanical engineer and didn't sleep at a Holiday Inn Express but preliminary check looks like the front pin on the nose gear assembly failed. When I went to make the right turn off the runway, the rear pin then failed which let the entire assembly rotate 180 degrees to the left. Once the assembly was 180 degrees off center the tube couldn't hold the stress, it failed and the whole thing collapsed.

The worst part is if I would have taken the previous exit it would have happened on the non-movement area of the airport. But since I taxied to an exit closer to my hangar it happened on the runway so now the FAA is involved. Like I said, "Murphy is alive and well in aviation".

Depending on the firewall condition it could cost more to repair than the insured value. When the insurance company tells me what they are going to do about the claim I will make a decision to repair or to part the airplane out.

Here are some photo's of the airplane on the runway.

Sad
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PostPosted: Tue Jul 22, 2014 1:38 pm    Post subject: N819PR Nose Gear Failure Reply with quote

I'm in need of a cowling even if it's a little banged up.

Al

On Tue, Jul 22, 2014 at 4:44 PM, Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)> wrote:
[quote]With it being insured at only $75,000, it might wind up being more than 50% just to repair it. If I do part it out, a GREAT plug-n-play instrument panel for a TR-4 will be available real soon.
 
Wink

On Tue, Jul 22, 2014 at 4:10 PM, Alfred Rosa <fredorosa(at)gmail.com (fredorosa(at)gmail.com)> wrote:
Quote:
So sorry to hear this Galin.  It doesn't look bad enough to part-out but I know how insurance companies are.

Al Rosa

On Tue, Jul 22, 2014 at 2:46 PM, Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)> wrote:
Quote:
Yesterday, after a day of flying, the nose gear on my TR-4 failed just before I exited the runway. The landings (three that day) were super smooth, which is not very common for me. I am not a mechanical engineer and didn't sleep at a Holiday Inn Express but preliminary check looks like the front pin on the nose gear assembly failed. When I went to make the right turn off the runway, the rear pin then failed which let the entire assembly rotate 180 degrees to the left. Once the assembly was 180 degrees off center the tube couldn't hold the stress, it failed and the whole thing collapsed.
 
The worst part is if I would have taken the previous exit it would have happened on the non-movement area of the airport. But since I taxied to an exit closer to my hangar it happened on the runway so now the FAA is involved. Like I said, "Murphy is alive and well in aviation".
 
Depending on the firewall condition it could cost more to repair than the insured value. When the insurance company tells me what they are going to do about the claim I will make a decision to repair or to part the airplane out.
 
Here are some photo's of the airplane on the runway.
 
Sad



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PostPosted: Tue Jul 22, 2014 2:28 pm    Post subject: N819PR Nose Gear Failure Reply with quote

I am not smart enough to design anything like that on my own. If it was electrical or electronic THAT I can do. Wink
On Tue, Jul 22, 2014 at 4:56 PM, Conners, Jerry L <jconners(at)dot.state.nv.us (jconners(at)dot.state.nv.us)> wrote:
Quote:

I would design myself and then have it fabricated in a manner that Lyle has done in the past…no short cuts in the construction and using Paul Lamar’s worst case math to determine the loads on impact.
 
From: owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com) [mailto:owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com)] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:53 PM
To: kis-list(at)matronics.com (kis-list(at)matronics.com)
Subject: Re: N819PR Nose Gear Failure



 
Jerry; Do you know where to get a "new and improved" nose gear? One rated for about 150,000lbs? Wink


 
On Tue, Jul 22, 2014 at 4:47 PM, Conners, Jerry L <jconners(at)dot.state.nv.us (jconners(at)dot.state.nv.us)> wrote:

The damage looks minimal…tear down inspection being the most costly repair (with resulting needed replacement parts)…then a new and improved new nose gear…hope the aircraft returns to the air soon
 
From: owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com) [mailto:owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com)] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:44 PM
To: kis-list(at)matronics.com (kis-list(at)matronics.com)
Subject: Re: N819PR Nose Gear Failure

 
With it being insured at only $75,000, it might wind up being more than 50% just to repair it. If I do part it out, a GREAT plug-n-play instrument panel for a TR-4 will be available real soon.

 

Wink



 
On Tue, Jul 22, 2014 at 4:10 PM, Alfred Rosa <fredorosa(at)gmail.com (fredorosa(at)gmail.com)> wrote:
So sorry to hear this Galin.  It doesn't look bad enough to part-out but I know how insurance companies are.
 

Al Rosa



 
On Tue, Jul 22, 2014 at 2:46 PM, Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)> wrote:

Yesterday, after a day of flying, the nose gear on my TR-4 failed just before I exited the runway. The landings (three that day) were super smooth, which is not very common for me. I am not a mechanical engineer and didn't sleep at a Holiday Inn Express but preliminary check looks like the front pin on the nose gear assembly failed. When I went to make the right turn off the runway, the rear pin then failed which let the entire assembly rotate 180 degrees to the left. Once the assembly was 180 degrees off center the tube couldn't hold the stress, it failed and the whole thing collapsed.

 

The worst part is if I would have taken the previous exit it would have happened on the non-movement area of the airport. But since I taxied to an exit closer to my hangar it happened on the runway so now the FAA is involved. Like I said, "Murphy is alive and well in aviation".

 

Depending on the firewall condition it could cost more to repair than the insured value. When the insurance company tells me what they are going to do about the claim I will make a decision to repair or to part the airplane out.

 

Here are some photo's of the airplane on the runway.

 

Sad




 
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PostPosted: Tue Jul 22, 2014 3:32 pm    Post subject: N819PR Nose Gear Failure Reply with quote

Lyle and Lamar probably have that solved for you…I recommend that you call them and see what is available.

From: owner-kis-list-server(at)matronics.com [mailto:owner-kis-list-server(at)matronics.com] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 3:28 PM
To: kis-list(at)matronics.com
Subject: Re: KIS-List: N819PR Nose Gear Failure

I am not smart enough to design anything like that on my own. If it was electrical or electronic THAT I can do. Wink

On Tue, Jul 22, 2014 at 4:56 PM, Conners, Jerry L <jconners(at)dot.state.nv.us<mailto:jconners(at)dot.state.nv.us>> wrote:
I would design myself and then have it fabricated in a manner that Lyle has done in the past…no short cuts in the construction and using Paul Lamar’s worst case math to determine the loads on impact.

From: owner-kis-list-server(at)matronics.com<mailto:owner-kis-list-server(at)matronics.com> [mailto:owner-kis-list-server(at)matronics.com<mailto:owner-kis-list-server(at)matronics.com>] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:53 PM

To: kis-list(at)matronics.com<mailto:kis-list(at)matronics.com>
Subject: Re: KIS-List: N819PR Nose Gear Failure

Jerry; Do you know where to get a "new and improved" nose gear? One rated for about 150,000lbs? Wink

On Tue, Jul 22, 2014 at 4:47 PM, Conners, Jerry L <jconners(at)dot.state.nv.us<mailto:jconners(at)dot.state.nv.us>> wrote:
The damage looks minimal…tear down inspection being the most costly repair (with resulting needed replacement parts)…then a new and improved new nose gear…hope the aircraft returns to the air soon

From: owner-kis-list-server(at)matronics.com<mailto:owner-kis-list-server(at)matronics.com> [mailto:owner-kis-list-server(at)matronics.com<mailto:owner-kis-list-server(at)matronics.com>] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:44 PM
To: kis-list(at)matronics.com<mailto:kis-list(at)matronics.com>
Subject: Re: KIS-List: N819PR Nose Gear Failure

With it being insured at only $75,000, it might wind up being more than 50% just to repair it. If I do part it out, a GREAT plug-n-play instrument panel for a TR-4 will be available real soon.

Wink

On Tue, Jul 22, 2014 at 4:10 PM, Alfred Rosa <fredorosa(at)gmail.com<mailto:fredorosa(at)gmail.com>> wrote:
So sorry to hear this Galin. It doesn't look bad enough to part-out but I know how insurance companies are.

Al Rosa

On Tue, Jul 22, 2014 at 2:46 PM, Galin Hernandez <galinhdz(at)gmail.com<mailto:galinhdz(at)gmail.com>> wrote:
Yesterday, after a day of flying, the nose gear on my TR-4 failed just before I exited the runway. The landings (three that day) were super smooth, which is not very common for me. I am not a mechanical engineer and didn't sleep at a Holiday Inn Express but preliminary check looks like the front pin on the nose gear assembly failed. When I went to make the right turn off the runway, the rear pin then failed which let the entire assembly rotate 180 degrees to the left. Once the assembly was 180 degrees off center the tube couldn't hold the stress, it failed and the whole thing collapsed.

The worst part is if I would have taken the previous exit it would have happened on the non-movement area of the airport. But since I taxied to an exit closer to my hangar it happened on the runway so now the FAA is involved. Like I said, "Murphy is alive and well in aviation".

Depending on the firewall condition it could cost more to repair than the insured value. When the insurance company tells me what they are going to do about the claim I will make a decision to repair or to part the airplane out.

Here are some photo's of the airplane on the runway.

Sad
et="_blank">http://www.matronics.com/Navigator?KIS-List

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PostPosted: Tue Jul 22, 2014 8:39 pm    Post subject: N819PR Nose Gear Failure Reply with quote

The RV-10 nosegear looks like it would be a possible conversion, if vans will sell them... Or a taildragger conversion....
http://lh5.ggpht.com/_1BUCUXrqtsE/TJqBGCqCJYI/AAAAAAAAAR8/eL7IweRFt3A/s800/rv-10.jpg
Scott

On Jul 22, 2014, at 4:28 PM, Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)> wrote:
[quote]I am not smart enough to design anything like that on my own. If it was electrical or electronic THAT I can do. Wink
On Tue, Jul 22, 2014 at 4:56 PM, Conners, Jerry L <jconners(at)dot.state.nv.us (jconners(at)dot.state.nv.us)> wrote:
Quote:

I would design myself and then have it fabricated in a manner that Lyle has done in the past…no short cuts in the construction and using Paul Lamar’s worst case math to determine the loads on impact.

From: owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com) [mailto:owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com)] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:53 PM
To: kis-list(at)matronics.com (kis-list(at)matronics.com)
Subject: Re: N819PR Nose Gear Failure





Jerry; Do you know where to get a "new and improved" nose gear? One rated for about 150,000lbs? Wink



On Tue, Jul 22, 2014 at 4:47 PM, Conners, Jerry L <jconners(at)dot.state.nv.us (jconners(at)dot.state.nv.us)> wrote:

The damage looks minimal…tear down inspection being the most costly repair (with resulting needed replacement parts)…then a new and improved new nose gear…hope the aircraft returns to the air soon

From: owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com) [mailto:owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com)] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:44 PM
To: kis-list(at)matronics.com (kis-list(at)matronics.com)
Subject: Re: N819PR Nose Gear Failure


With it being insured at only $75,000, it might wind up being more than 50% just to repair it. If I do part it out, a GREAT plug-n-play instrument panel for a TR-4 will be available real soon.



Wink




On Tue, Jul 22, 2014 at 4:10 PM, Alfred Rosa <fredorosa(at)gmail.com (fredorosa(at)gmail.com)> wrote:
So sorry to hear this Galin. It doesn't look bad enough to part-out but I know how insurance companies are.


Al Rosa




On Tue, Jul 22, 2014 at 2:46 PM, Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)> wrote:

Yesterday, after a day of flying, the nose gear on my TR-4 failed just before I exited the runway. The landings (three that day) were super smooth, which is not very common for me. I am not a mechanical engineer and didn't sleep at a Holiday Inn Express but preliminary check looks like the front pin on the nose gear assembly failed. When I went to make the right turn off the runway, the rear pin then failed which let the entire assembly rotate 180 degrees to the left. Once the assembly was 180 degrees off center the tube couldn't hold the stress, it failed and the whole thing collapsed.



The worst part is if I would have taken the previous exit it would have happened on the non-movement area of the airport. But since I taxied to an exit closer to my hangar it happened on the runway so now the FAA is involved. Like I said, "Murphy is alive and well in aviation".



Depending on the firewall condition it could cost more to repair than the insured value. When the insurance company tells me what they are going to do about the claim I will make a decision to repair or to part the airplane out.



Here are some photo's of the airplane on the runway.



Sad





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PostPosted: Wed Jul 23, 2014 12:15 am    Post subject: N819PR Nose Gear Failure Reply with quote

Galin,

I know how your feeling , since i had a nose gear failure on my KIS (2)
just after i completed her . It was a very bad nights sleep for me , and
even worse after the insurance man turned up , since it doesn't take much
for the insurance company to consider a right off , but i was not accepting
that and made a deal with them to settle for a lower amount plus the plane
back . in the end it took an engine strip down and rebuild, new Prop, a new
nose gear from Lyle ,a bit of glass fibre and paint and she has been flying
great for the last 11 years. The engine strip down showed no internal
damage and was completed for just 3500 pounds ( 5.5K$). it took me 6 months
to get back in the air but i ended up about 6 K pounds in profit . i would
be surprised if there was any damage to the firewall from a slow taxi nose
gear failure.
The good thing is that the airframe and wings were not damaged, take the
wings off , rent a trailer and get her home and into the workshop , pour
yourself a stiff drink and make a list of what is required to get back in
the air
Engine strip and rebuild( 6K), (plus maybe 2K for parts).
New Prop and spinner (8K)
New Nose gear (1K)
Bit of paint ( 1K )
Repairs to the cowling (1K)
Labour ( if you can't do it yourself ) 5K max

Seriously consider making a deal with the insurance to get back the plane
if they tell you it's scrap . even if you cant do the work yourself there
are plenty of people out there with the skill who can.

Does any body know if Lyle is still making parts ? and does anyone want up
update/ correct my estimates above .

Keith

From: Scott Stearns <sstearns2(at)yahoo.com>
To: "kis-list(at)matronics.com" <kis-list(at)matronics.com>,
Date: 07/23/2014 06:41 AM
Subject: Re: N819PR Nose Gear Failure
Sent by: owner-kis-list-server(at)matronics.com

The RV-10 nosegear looks like it would be a possible conversion, if vans will
sell them... Or a taildragger conversion....

http://lh5.ggpht.com/_1BUCUXrqtsE/TJqBGCqCJYI/AAAAAAAAAR8/eL7IweRFt3A/s800/rv-10.jpg

Scott

On Jul 22, 2014, at 4:28 PM, Galin Hernandez <galinhdz(at)gmail.com> wrote:

I am not smart enough to design anything like that on my own. If it was
electrical or electronic THAT I can do. Wink
On Tue, Jul 22, 2014 at 4:56 PM, Conners, Jerry L <
jconners(at)dot.state.nv.us> wrote:
I would design myself and then have it fabricated in a manner that
Lyle has done in the past…no short cuts in the construction and using
Paul Lamar’s worst case math to determine the loads on impact.

From: owner-kis-list-server(at)matronics.com [mailto:
owner-kis-list-server(at)matronics.com] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:53 PM

To: kis-list(at)matronics.com
Subject: Re: N819PR Nose Gear Failure

Jerry; Do you know where to get a "new and improved" nose gear? One
rated for about 150,000lbs? Wink

On Tue, Jul 22, 2014 at 4:47 PM, Conners, Jerry L <
jconners(at)dot.state.nv.us> wrote:
The damage looks minimal…tear down inspection being the most costly
repair (with resulting needed replacement parts)…then a new and
improved new nose gear…hope the aircraft returns to the air soon

From: owner-kis-list-server(at)matronics.com [mailto:
owner-kis-list-server(at)matronics.com] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:44 PM
To: kis-list(at)matronics.com
Subject: Re: N819PR Nose Gear Failure

With it being insured at only $75,000, it might wind up being more
than 50% just to repair it. If I do part it out, a GREAT plug-n-play
instrument panel for a TR-4 will be available real soon.

Wink

On Tue, Jul 22, 2014 at 4:10 PM, Alfred Rosa <fredorosa(at)gmail.com>
wrote:
So sorry to hear this Galin. It doesn't look bad enough to part-out
but I know how insurance companies are.

Al Rosa

On Tue, Jul 22, 2014 at 2:46 PM, Galin Hernandez <galinhdz(at)gmail.com>
wrote:
Yesterday, after a day of flying, the nose gear on my TR-4 failed
just before I exited the runway. The landings (three that day) were
super smooth, which is not very common for me. I am not a mechanical
engineer and didn't sleep at a Holiday Inn Express but preliminary
check looks like the front pin on the nose gear assembly failed. When
I went to make the right turn off the runway, the rear pin then
failed which let the entire assembly rotate 180 degrees to the left.
Once the assembly was 180 degrees off center the tube couldn't hold
the stress, it failed and the whole thing collapsed.

The worst part is if I would have taken the previous exit it would
have happened on the non-movement area of the airport. But since I
taxied to an exit closer to my hangar it happened on the runway so
now the FAA is involved. Like I said, "Murphy is alive and well in
aviation".

Depending on the firewall condition it could cost more to repair than
the insured value. When the insurance company tells me what they are
going to do about the claim I will make a decision to repair or to
part the airplane out.

Here are some photo's of the airplane on the runway.

Sad

et="_blank">http://www.matronics.com/Navigator?KIS-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution


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PostPosted: Wed Jul 23, 2014 4:46 am    Post subject: N819PR Nose Gear Failure Reply with quote

THANKS for the info. I am meeting with a mechanic today for his opinion. I have decided not to do the work myself (too emotionally involved) and have an impartial person help me with the decision. At least the airplane is in my hangar already so there is no need to move it.
 
I don't think it will be written off as a total loss but lets see what happens. I like the idea of maybe using the RV-10 nose gear but am afraid it might be too heavy making the nose drop during landing even more pronounced.

On Wed, Jul 23, 2014 at 4:15 AM, <Keith.Miller(at)esa.int (Keith.Miller(at)esa.int)> wrote:
[quote] --> KIS-List message posted by: Keith.Miller(at)esa.int (Keith.Miller(at)esa.int)

Galin,

I know  how your feeling , since i had a nose gear failure on my KIS (2)
just after i completed her .  It was a very bad  nights sleep for me , and
even worse after the insurance man  turned up , since it doesn't take much
for the insurance company to  consider a right off , but i was not accepting
that and made a deal with them to settle for a lower amount plus the plane
back . in the end  it took an engine strip down and rebuild, new Prop,  a new
nose gear from Lyle ,a bit of  glass fibre and paint and she has been flying
great  for the last 11 years. The  engine strip down   showed no  internal
damage and was completed for just  3500 pounds ( 5.5K$).  it took me 6 months
to get back in the air but i  ended up about 6 K pounds in profit .  i would
be surprised if there was any  damage to the  firewall from a  slow taxi nose
gear failure.
The good  thing is that the airframe and wings were not damaged, take the
wings off , rent a trailer and get her home  and into the  workshop , pour
yourself a stiff drink and  make a list of what is required to get back in
the air
   Engine strip and rebuild( 6K), (plus maybe  2K for parts).
   New Prop  and spinner (8K)
   New Nose gear  (1K)
   Bit of paint ( 1K )
   Repairs to the  cowling    (1K)
   Labour ( if you can't do it yourself ) 5K max

Seriously consider making a deal   with the insurance to get back the  plane
if they tell you it's scrap .  even if you cant do the work yourself there
are plenty of people out there with the skill who can.

Does any body know if Lyle is still making parts  ?  and does anyone want up
update/ correct  my estimates above  .

Keith



From:   Scott Stearns <sstearns2(at)yahoo.com (sstearns2(at)yahoo.com)>
To:     "kis-list(at)matronics.com (kis-list(at)matronics.com)" <kis-list(at)matronics.com (kis-list(at)matronics.com)>,
Date:   07/23/2014 06:41 AM
Subject:        Re: N819PR Nose Gear Failure

Sent by:        owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com)



The RV-10 nosegear looks like it would be a possible conversion, if vans will
sell them...  Or a taildragger conversion....

http://lh5.ggpht.com/_1BUCUXrqtsE/TJqBGCqCJYI/AAAAAAAAAR8/eL7IweRFt3A/s800/rv-10.jpg

Scott

On Jul 22, 2014, at 4:28 PM, Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)> wrote:

      I am not smart enough to design anything like that on my own. If it was
      electrical or electronic THAT I can do. Wink


      On Tue, Jul 22, 2014 at 4:56 PM, Conners, Jerry L <
      jconners(at)dot.state.nv.us (jconners(at)dot.state.nv.us)> wrote:
        I would design myself and then have it fabricated in a manner that
        Lyle has done in the past…no short cuts in the construction and using
        Paul Lamar’s worst case math to determine the loads on impact.





        From: owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com) [mailto:
        owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com)] On Behalf Of Galin Hernandez
        Sent: Tuesday, July 22, 2014 1:53 PM



        To: kis-list(at)matronics.com (kis-list(at)matronics.com)
        Subject: Re: N819PR Nose Gear Failure





        Jerry; Do you know where to get a "new and improved" nose gear? One
        rated for about 150,000lbs? Wink





        On Tue, Jul 22, 2014 at 4:47 PM, Conners, Jerry L <
        jconners(at)dot.state.nv.us (jconners(at)dot.state.nv.us)> wrote:


        The damage looks minimal…tear down inspection being the most costly
        repair (with resulting needed replacement parts)…then a new and
        improved new nose gear…hope the aircraft returns to the air soon





        From: owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com) [mailto:
        owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com)] On Behalf Of Galin Hernandez
        Sent: Tuesday, July 22, 2014 1:44 PM
        To: kis-list(at)matronics.com (kis-list(at)matronics.com)
        Subject: Re: N819PR Nose Gear Failure





        With it being insured at only $75,000, it might wind up being more
        than 50% just to repair it. If I do part it out, a GREAT plug-n-play
        instrument panel for a TR-4 will be available real soon.





        Wink





        On Tue, Jul 22, 2014 at 4:10 PM, Alfred Rosa <fredorosa(at)gmail.com (fredorosa(at)gmail.com)>
        wrote:


        So sorry to hear this Galin.  It doesn't look bad enough to part-out
        but I know how insurance companies are.





        Al Rosa





        On Tue, Jul 22, 2014 at 2:46 PM, Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)>
        wrote:


        Yesterday, after a day of flying, the nose gear on my TR-4 failed
        just before I exited the runway. The landings (three that day) were
        super smooth, which is not very common for me. I am not a mechanical
        engineer and didn't sleep at a Holiday Inn Express but preliminary
        check looks like the front pin on the nose gear assembly failed. When
        I went to make the right turn off the runway, the rear pin then
        failed which let the entire assembly rotate 180 degrees to the left.
        Once the assembly was 180 degrees off center the tube couldn't hold
        the stress, it failed and the whole thing collapsed.





        The worst part is if I would have taken the previous exit it would
        have happened on the non-movement area of the airport. But since I
        taxied to an exit closer to my hangar it happened on the runway so
        now the FAA is involved. Like I said, "Murphy is alive and well in
        aviation".





        Depending on the firewall condition it could cost more to repair than
        the insured value. When the insurance company tells me what they are
        going to do about the claim I will make a decision to repair or to
        part the airplane out.





        Here are some photo's of the airplane on the runway.





        Sad







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Joined: 13 Dec 2011
Posts: 101
Location: Philadelphia, PA, USA

PostPosted: Wed Jul 23, 2014 5:23 am    Post subject: Re: N819PR Nose Gear Failure Reply with quote

Hello Galin,

Words cannot express how sorry I am to learn of your nose gear failure. I know you have invested a lot of time, effort, and funds into you airplane, and I would sure hate to see it end up in the total out column. As bad as you may fell at the present it does not appear to me to be a total loss. I am surprised that no excessive wear showed up in the gear linkage when you had it off the airplane during your broken exhaust incident. Denise F. from Texas, bought a new nose gear from Lyle a little over a year ago, the cost was $2800.00. You may want to consider having Lyle increase the bolt size on the linkage.

Mark T.


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sstearns2(at)yahoo.com
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PostPosted: Wed Jul 23, 2014 8:29 am    Post subject: N819PR Nose Gear Failure Reply with quote

Hi Galin,
Good to hear the airplane is back in the hangar. At least this happened close to home.
The RV-10 gear may not be any heavier. The cruiser nosegear is nearly 40 lbs. A grumman tiger gear may work too if you can find one. The AL prop is pretty heavy. You could save 15+ lbs off the nose by going to the whirlwind ground adjustable prop and be able to tweek the pitch for best performance.
I am sure everyone is very interested in seeing more detailed pictures when you are ready for that.
Scott

On Jul 23, 2014, at 6:45 AM, Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)> wrote:
[quote]THANKS for the info. I am meeting with a mechanic today for his opinion. I have decided not to do the work myself (too emotionally involved) and have an impartial person help me with the decision. At least the airplane is in my hangar already so there is no need to move it.

I don't think it will be written off as a total loss but lets see what happens. I like the idea of maybe using the RV-10 nose gear but am afraid it might be too heavy making the nose drop during landing even more pronounced.

On Wed, Jul 23, 2014 at 4:15 AM, <Keith.Miller(at)esa.int (Keith.Miller(at)esa.int)> wrote:
Quote:
--> KIS-List message posted by: Keith.Miller(at)esa.int (Keith.Miller(at)esa.int)

Galin,

I know how your feeling , since i had a nose gear failure on my KIS (2)
just after i completed her . It was a very bad nights sleep for me , and
even worse after the insurance man turned up , since it doesn't take much
for the insurance company to consider a right off , but i was not accepting
that and made a deal with them to settle for a lower amount plus the plane
back . in the end it took an engine strip down and rebuild, new Prop,  a new
nose gear from Lyle ,a bit of glass fibre and paint and she has been flying
great for the last 11 years. The engine strip down showed no internal
damage and was completed for just 3500 pounds ( 5.5K$). it took me 6 months
to get back in the air but i ended up about 6 K pounds in profit .  i would
be surprised if there was any damage to the firewall from a  slow taxi nose
gear failure.
The good thing is that the airframe and wings were not damaged, take the
wings off , rent a trailer and get her home and into the workshop , pour
yourself a stiff drink and make a list of what is required to get back in
the air
Engine strip and rebuild( 6K), (plus maybe 2K for parts).
New Prop and spinner (8K)
New Nose gear (1K)
Bit of paint ( 1K )
Repairs to the cowling (1K)
Labour ( if you can't do it yourself ) 5K max

Seriously consider making a deal with the insurance to get back the  plane
if they tell you it's scrap . even if you cant do the work yourself there
are plenty of people out there with the skill who can.

Does any body know if Lyle is still making parts ? and does anyone want up
update/ correct my estimates above .

Keith



From: Scott Stearns <sstearns2(at)yahoo.com (sstearns2(at)yahoo.com)>
To: "kis-list(at)matronics.com (kis-list(at)matronics.com)" <kis-list(at)matronics.com (kis-list(at)matronics.com)>,
Date: 07/23/2014 06:41 AM
Subject: Re: N819PR Nose Gear Failure

Sent by: owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com)



The RV-10 nosegear looks like it would be a possible conversion, if vans will
sell them... Or a taildragger conversion....

http://lh5.ggpht.com/_1BUCUXrqtsE/TJqBGCqCJYI/AAAAAAAAAR8/eL7IweRFt3A/s800/rv-10.jpg

Scott

On Jul 22, 2014, at 4:28 PM, Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)> wrote:

I am not smart enough to design anything like that on my own. If it was
electrical or electronic THAT I can do. Wink


On Tue, Jul 22, 2014 at 4:56 PM, Conners, Jerry L <
jconners(at)dot.state.nv.us (jconners(at)dot.state.nv.us)> wrote:
I would design myself and then have it fabricated in a manner that
Lyle has done in the past…no short cuts in the construction and using
Paul Lamar’s worst case math to determine the loads on impact.





From: owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com) [mailto:
owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com)] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:53 PM



To: kis-list(at)matronics.com (kis-list(at)matronics.com)
Subject: Re: N819PR Nose Gear Failure





Jerry; Do you know where to get a "new and improved" nose gear? One
rated for about 150,000lbs? Wink





On Tue, Jul 22, 2014 at 4:47 PM, Conners, Jerry L <
jconners(at)dot.state.nv.us (jconners(at)dot.state.nv.us)> wrote:


The damage looks minimal…tear down inspection being the most costly
repair (with resulting needed replacement parts)…then a new and
improved new nose gear…hope the aircraft returns to the air soon





From: owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com) [mailto:
owner-kis-list-server(at)matronics.com (owner-kis-list-server(at)matronics.com)] On Behalf Of Galin Hernandez
Sent: Tuesday, July 22, 2014 1:44 PM
To: kis-list(at)matronics.com (kis-list(at)matronics.com)
Subject: Re: N819PR Nose Gear Failure





With it being insured at only $75,000, it might wind up being more
than 50% just to repair it. If I do part it out, a GREAT plug-n-play
instrument panel for a TR-4 will be available real soon.





Wink





On Tue, Jul 22, 2014 at 4:10 PM, Alfred Rosa <fredorosa(at)gmail.com (fredorosa(at)gmail.com)>
wrote:


So sorry to hear this Galin. It doesn't look bad enough to part-out
but I know how insurance companies are.





Al Rosa





On Tue, Jul 22, 2014 at 2:46 PM, Galin Hernandez <galinhdz(at)gmail.com (galinhdz(at)gmail.com)>
wrote:


Yesterday, after a day of flying, the nose gear on my TR-4 failed
just before I exited the runway. The landings (three that day) were
super smooth, which is not very common for me. I am not a mechanical
engineer and didn't sleep at a Holiday Inn Express but preliminary
check looks like the front pin on the nose gear assembly failed. When
I went to make the right turn off the runway, the rear pin then
failed which let the entire assembly rotate 180 degrees to the left.
Once the assembly was 180 degrees off center the tube couldn't hold
the stress, it failed and the whole thing collapsed.





The worst part is if I would have taken the previous exit it would
have happened on the non-movement area of the airport. But since I
taxied to an exit closer to my hangar it happened on the runway so
now the FAA is involved. Like I said, "Murphy is alive and well in
aviation".





Depending on the firewall condition it could cost more to repair than
the insured value. When the insurance company tells me what they are
going to do about the claim I will make a decision to repair or to
part the airplane out.





Here are some photo's of the airplane on the runway.





Sad







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PostPosted: Wed Jul 23, 2014 6:48 pm    Post subject: N819PR Nose Gear Failure Reply with quote

Hello Galin,

I have seen quotes from under $2000 to about $4000 for a tear down and inspection on a certified IO-360 so while not cheap it is not too expensive.

I know I am about to sound like a broken record but the issue with the nose gear is the main gear placement. As designed and as most are built the main gear is WAY too far back. This places much more load on the nose gear and contributes to nose slam and Pilot induced oscillation. Currently the TR-4 has about 33% of the weight on the nose gear empty. At no time should it be over 25% (most forward CG) and typically should be about 10% at mid aft CG. At far aft CG it should be in the single digits. Actually if you load to absolute aft CG and push the tail to the ground it should almost or even stay there.

Everyone, move your main gear forward to save your nose gear, engine and prop. This is an easy and cheap change and I know you will love it once you have done it. And so will your nose gear.

Mark

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PostPosted: Thu Jul 24, 2014 4:47 am    Post subject: N819PR Nose Gear Failure Reply with quote

Initial check by the mechanic indicates no firewall damage at all, so the actual damage is not a big deal. Engine will be completely overhauled, a new nose gear installed, a new propeller installed, some fiberglass work done and the airplane will be better than before. The airplane is a whole lot stronger than it looks.
 
The rear pin on the landing gear "H" bracket broke letting the entire assembly rotate 180 degrees backwards. Once this happened the main tube held up for a little bit but eventually collapsed under the different stress. I will ask Lyle if he can make the landing gear rear pin a little bigger to better withstand the landing loads.
 
I will definitely look at moving the main gear an inch or two further forward but not sure if it can be done at this stage. The other option is to go with a CATTO composite prop, which is lighter than the SENSENICH aluminum prop I have, but composite props and rain don't mix very well and I fly real IMC.

On Wed, Jul 23, 2014 at 10:47 PM, Mark Kettering <mantafs(at)earthlink.net (mantafs(at)earthlink.net)> wrote:
[quote]--> KIS-List message posted by: Mark Kettering <mantafs(at)earthlink.net (mantafs(at)earthlink.net)>

Hello Galin,

I have seen quotes from under $2000 to about $4000 for a tear down and inspection on a certified IO-360 so while not cheap it is not too expensive.

I know I am about to sound like a broken record but the issue with the nose gear is the main gear placement.  As designed and as most are built the main gear is WAY too far back.  This places much more load on the nose gear and contributes to nose slam and Pilot induced oscillation.  Currently the TR-4 has about 33% of the weight on the nose gear empty.  At no time should it be over 25% (most forward CG) and typically should be about 10% at mid aft CG.  At far aft CG it should be in the single digits.  Actually if you load to absolute aft CG and push the tail to the ground it should almost or even stay there.

Everyone, move your main gear forward to save your nose gear, engine and prop.  This is an easy and cheap change and I know you will love it once you have done it.  And so will your nose gear.

Mark

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PostPosted: Thu Jul 24, 2014 5:15 am    Post subject: N819PR Nose Gear Failure Reply with quote

Moving the main gear forward is very simple. You do not more the gear where it attaches to the fuselage you just angle it forward with a FLOX wedge. On my TR1 I unbolted the main gear and dropped it down. Then I made two small wood blocks about 3/8" thick to use as spacers. I placed these on the trailing edge of the main gear center section and test bolted the gear in place now angled forward due to the spacers. Remove and adjust as needed. When I was happy with the new wheel location I lowered the gear again, covered it with packing tape for a release, piled FLOX on the top of the gear and bolted it in place with the spacers holding the angle. This took me about 3 hours total.

Some may be thinking that having the gear angled forward will put more stress on the attachment. Actually the opposite is true. On landing there are two main forces, the vertical load due to the rate of decent and the horizontal load due to the rapid spin up of the wheels. This horizontal load is the main stress on the attachment and is reduced due to the forward angle.

Mark

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PostPosted: Thu Jul 24, 2014 5:21 am    Post subject: N819PR Nose Gear Failure Reply with quote

I think this was already done on my airplane but I will check when we start working on it.
On Thu, Jul 24, 2014 at 9:14 AM, Mark Kettering <mantafs(at)earthlink.net (mantafs(at)earthlink.net)> wrote:
[quote]--> KIS-List message posted by: Mark Kettering <mantafs(at)earthlink.net (mantafs(at)earthlink.net)>


Moving the main gear forward is very simple.  You do not more the gear where it attaches to the fuselage you just angle it forward with a FLOX wedge.  On my TR1 I unbolted the main gear and dropped it down. Then I made two small wood blocks about 3/8" thick to use as spacers.  I placed these on the trailing edge of the main gear center section and test bolted the gear in place now angled forward due to the spacers.  Remove and adjust as needed.  When I was happy with the new wheel location I lowered the gear again, covered it with packing tape for a release, piled FLOX on the top of the gear and bolted it in place with the spacers holding the angle.  This took me about 3 hours total.

Some may be thinking that having the gear angled forward will put more stress on the attachment.  Actually the opposite is true.  On landing there are two main forces, the vertical load due to the rate of decent and the horizontal load due to the rapid spin up of the wheels. This horizontal load is the main stress on the attachment and is reduced due to the forward angle.

Mark

--


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