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Horiz. stab front attach brackets.

 
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HShack(at)aol.com
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PostPosted: Sat May 16, 2009 8:07 pm    Post subject: Horiz. stab front attach brackets. Reply with quote

Was looking at my friends MkIII boom tube today & discovered that those horiz. stab brackets had been installed tight against the tabs on the front of the stab[?]. I could see flexing of the brackets & tabs when the elevator was operated. Been this way for about 9 yrs.; surprised nothing has broken as of yet.

Question is, how to fix it? Do we need to make new brackets, using the same rivet holes, with the bends to give the necessary clearance? What are they made of, 4130? Would a slightly thicker stainless do?

Yeah, I'll be calling TNK on Monday. Just getting prepared.........

Howard Shackleford
FS II
SC
In a message dated 5/16/2009 11:34:12 P.M. Eastern Daylight Time, slyck(at)frontiernet.net writes:
Quote:
--> Kolb-List message posted by: robert bean <slyck(at)frontiernet.net>

Sport Pilot is a pilot's license.

The dropped medical requirement applies to all categories, private,
commercial, (ok not airship and heli)
as a default rating equivalent to Sport Pilot.

They refer to it as a "privilege". As an example, my commercial heli
license notes that I have
private fixed wing privilege.
BB
back hurts tonight after rasslin' with that left gear leg. Gotter in
though.

On 16, May 2009, at 11:15 PM, ces308 wrote:

Quote:
--> Kolb-List message posted by: "ces308" <ces308(at)ldaco.com>

Thank you Rick....That is what I thought too,but when the FAA guy
finished inspected the airplane last Wednesday we talked about 
that and he said I needed a pilots license to fly it...???  He said
it didn't fall in that category ...not wanting to argue with the
guy who was going to sign off my airplane ,I decided to find out
later,as maybe he was mistaken . I looked it up in the FAR's and it
looked like it fit that category to me too.

chris ambrose
m3x/jab


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PostPosted: Sun May 17, 2009 4:37 am    Post subject: Horiz. stab front attach brackets. Reply with quote

Howard, Making new brackets for the boom is probably the easiest way to do it, all things being equal. This is opinion based on looking at my Mk III, but yours may be different so take it with a grain.......As for stainless, generally, it's very tough, but not very hard. I wouldn't make that change.

Rick

On Sat, May 16, 2009 at 11:07 PM, <HShack(at)aol.com (HShack(at)aol.com)> wrote:
Quote:
Was looking at my friends MkIII boom tube today & discovered that those horiz. stab brackets had been installed tight against the tabs on the front of the stab[?].  I could see flexing of the brackets & tabs when the elevator was operated.  Been this way for about 9 yrs.; surprised nothing has broken as of yet.
 
Question is, how to fix it?  Do we need to make new brackets, using the same rivet holes,  with the bends to give the necessary clearance?  What are they made of, 4130?  Would a slightly thicker stainless do?
 
Yeah,  I'll be calling TNK on Monday.  Just getting prepared.........
 
Howard Shackleford
FS II
SC  
In a message dated 5/16/2009 11:34:12 P.M. Eastern Daylight Time, slyck(at)frontiernet.net (slyck(at)frontiernet.net) writes:
Quote:
--> Kolb-List message posted by: robert bean <slyck(at)frontiernet.net (slyck(at)frontiernet.net)>

Sport Pilot is a pilot's license.

The dropped medical requirement applies to all categories, private, 
commercial, (ok not airship and heli)
as a default rating equivalent to Sport Pilot.

They refer to it as a "privilege".  As an example, my commercial heli 
license notes that I have
private fixed wing privilege.
BB
back hurts tonight after rasslin' with that left gear leg.  Gotter in 
though.

On 16, May 2009, at 11:15 PM, ces308 wrote:

Quote:
--> Kolb-List message posted by: "ces308" <ces308(at)ldaco.com (ces308(at)ldaco.com)>

Thank you Rick....That is what I thought too,but when the FAA guy 
finished inspected the airplane last Wednesday  we talked about 
that and he said I needed a pilots license to fly it...???  He said 
it didn't fall in that category ...not wanting to argue with the 
guy who was going to sign off my airplane ,I decided to find out 
later,as maybe he was mistaken . I looked it up in the FAR's and it 
looked like it fit that category to me too.

chris ambrose
m3x/jab


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=244320#244320

>



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Joined: 10 Jan 2006
Posts: 1246

PostPosted: Mon May 18, 2009 6:24 am    Post subject: Re: Horiz. stab front attach brackets. Reply with quote

Make sure to replace the brackets that were flexing, chances are they have been weakened after 9 years of flexing. There was a Kolb that had one of those tabs break in flight, the horizontal stab went straight up against the tail wire, it scared the hell out of the pilot, but he was in the pattern and was able to land Smile That was a good catch, you might have saved your friends butt on that one !

Mike


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PostPosted: Mon May 18, 2009 12:24 pm    Post subject: Horiz. stab front attach brackets. Reply with quote

Howard C
 
  Since you already likely have the 3/16th holes for the first stab. mounting bracket C I would suggest using 3/16" AN bolts.   I "may" have something you could use C also.  I say may C because I don't know how many I've got.  They are aircraft hardware.  They are a bolt..that uses a hex wrench on the threaded end.
 
  If you want me to see if I have 12 of 'em C give me a call.  573-489-9802
 
Mike Welch
MkIII
 
From: HShack(at)aol.com
Date: Sun C 17 May 2009 00:07:27 -0400
Subject: Re: Horiz. stab front attach brackets.
To: kolb-list(at)matronics.com

Was looking at my friends MkIII boom tube today & discovered that those horiz. stab brackets had been installed tight against the tabs on the front of the stab[?].  I could see flexing of the brackets & tabs when the elevator was operated.  Been this way for about 9 yrs.; surprised nothing has broken as of yet.
 
Question is C how to fix it?  Do we need to make new brackets C using the same rivet holes C  with the bends to give the necessary clearance?  What are they made of C 4130?  Would a slightly thicker stainless do?
 
Yeah C  I'll be calling TNK on Monday.  Just getting prepared.........
 
Howard Shackleford
FS II
SC  
In a message dated 5/16/2009 11:34:12 P.M. Eastern Daylight Time C slyck(at)frontiernet.net writes:
Quote:
--> Kolb-List message posted by: robert bean <slyck(at)frontiernet.net>

Sport Pilot is a pilot's license.

The dropped medical requirement applies to all categories C private C 
commercial C (ok not airship and heli)
as a default rating equivalent to Sport Pilot.

They refer to it as a "privilege".  As an example C my commercial heli 
license notes that I have
private fixed wing privilege.
BB
back hurts tonight after rasslin' with that left gear leg.  Gotter in 
though.

On 16 C May 2009 C at 11:15 PM C ces308 wrote:

Quote:
--> Kolb-List message posted by: "ces308" <ces308(at)ldaco.com>

Thank you Rick....That is what I thought too Cbut when the FAA guy 
finished inspected the airplane last Wednesday  we talked about 
that and he said I needed a pilots license to fly it...???  He said 
it didn't fall in that category ...not wanting to argue with the 
guy who was going to sign off my airplane CI decided to find out 
later Cas maybe he was mistaken . I looked it up in the FAR's and it 
looked like it fit that category to me too.

chris ambrose
m3x/jab


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=244320#244320








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