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chuck960
Joined: 11 Mar 2009
Posts: 44
Location: PA
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 Posted: Mon Apr 12, 2010 3:40 pm Post subject: Nose Gear |
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Guys,
I added the shock cord to the nose gear leg today and I am wondering why it is so difficult to move the rudder pedals. The shock cord holds the gear very tightly into the V groove in the Nylon block. I can see that once the engine weight is added it will take some of the pull out of the cord. It seams to me that it might be OK on the ground but in the air it will be very hard to move the rudder. Am I missing something here?
Chuck Dean
Ch650
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jaybannist(at)cs.com
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| Posted: Mon Apr 12, 2010 3:55 pm Post subject: Nose Gear |
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Chuck,
I thought the very same thing. However, it proved to be of no concern. It works fine on the ground and in the air. I think my experience is pretty much like most others.
Jay Bannister
--> Zenith601-List message posted by: "chuck960" <chuckde(at)roadrunner.com (chuckde(at)roadrunner.com)>
| Quote: |
Guys,
I added the shock cord to the nose gear leg today and I am wondering why it is
so difficult to move the rudder pedals.
|
[quote][b]
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jfowler120(at)verizon.net
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| Posted: Mon Apr 12, 2010 4:51 pm Post subject: Nose Gear |
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Chuck,
Rudder movement is easy. The resistance you feel is because you are on the
ground and the rudder and nose gear are connected. All is okay with
movement. BTW -- don't land with a cocked nose gear with this setup.
Karl
--------------------------------------------------
From: "chuck960" <chuckde(at)roadrunner.com>
Sent: Monday, April 12, 2010 7:40 PM
To: <zenith601-list(at)matronics.com>
Subject: Nose Gear
| Quote: |
Guys,
I added the shock cord to the nose gear leg today and I am wondering why
it is so difficult to move the rudder pedals. The shock cord holds the
gear very tightly into the V groove in the Nylon block. I can see that
once the engine weight is added it will take some of the pull out of the
cord. It seams to me that it might be OK on the ground but in the air it
will be very hard to move the rudder. Am I missing something here?
Chuck Dean
Ch650
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=294029#294029
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mhubel
Joined: 05 Sep 2009
Posts: 141
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| Posted: Tue Apr 13, 2010 5:00 am Post subject: Nose Gear |
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Chuck,
Although most have found the extra friction acceptable, it is still
higher than production aircraft plane I have flown. I find it to be
marginal to make really nice smooth rudder corrections, not impossible,
just not as nice as the other extreme (a Grumman AA-5). Note that when
you tighten the rudder cables the friction will increase some more.
Be sure the two half's of the bearing block are not too tight. Also
you need to lubricate the block. This is another thing I never liked,
having exposed grease in the engine compartment. Not much we can do
about it.
After I get the plane back together, I am going to be looking for
nice ways to reduce the friction as seen in flight.
| Quote: | > Guys,
> I added the shock cord to the nose gear leg today and I am wondering
> why it is so difficult to move the rudder pedals. The shock cord
> holds the gear very tightly into the V groove in the Nylon block. I
> can see that once the engine weight is added it will take some of the
> pull out of the cord. It seams to me that it might be OK on the
> ground but in the air it will be very hard to move the rudder. Am I
> missing something here?
> Chuck Dean
> Ch650
|
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_________________
Mark Hubelbank
N708HU
CH601XL
Jabiru 3300
Rotec TBI 40-3 carb
Sensenich ground adj prop.
240 hr TAF
Pictures at photo.hubbles.com |
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bryanmmartin
Joined: 10 Jan 2006
Posts: 1018
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| Posted: Tue Apr 13, 2010 6:54 am Post subject: Nose Gear |
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Don't forget that the rudder cables will loosen significantly with weight on the nose gear. The tension should be set with the nose wheel off the ground. I originally set my cable tension with weight on the nose wheel, after I properly set it with no weight on the wheel, it took a lot less effort to move the rudder in flight. Now on the ground, my rudder cables are almost slack.
On Apr 13, 2010, at 8:59 AM, Mark Hubelbank wrote:
| Quote: |
Chuck,
Although most have found the extra friction acceptable, it is still higher than production aircraft plane I have flown. I find it to be marginal to make really nice smooth rudder corrections, not impossible, just not as nice as the other extreme (a Grumman AA-5). Note that when you tighten the rudder cables the friction will increase some more.
Be sure the two half's of the bearing block are not too tight. Also you need to lubricate the block. This is another thing I never liked, having exposed grease in the engine compartment. Not much we can do about it.
After I get the plane back together, I am going to be looking for nice ways to reduce the friction as seen in flight.
>> Guys,
>> I added the shock cord to the nose gear leg today and I am wondering why it is so difficult to move the rudder pedals. The shock cord holds the gear very tightly into the V groove in the Nylon block. I can see that once the engine weight is added it will take some of the pull out of the cord. It seams to me that it might be OK on the ground but in the air it will be very hard to move the rudder. Am I missing something here?
>> Chuck Dean
>> Ch650
>>
>>
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--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
do not archive.
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_________________
--
Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive. |
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klondike(at)megalink.net
Guest
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| Posted: Tue Apr 13, 2010 7:51 am Post subject: Nose Gear |
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I build mine without the "V" notch for 2 reasons: 1) lowers the resistance
2) I don't like the way the "V" notch makes the lower plate flex when
turning the nose gear left and right. (note. then bungee isn't the one
that gives, it is the bottom plate
Fritz
---
Original Message -----
From: "Bryan Martin" <bryanmmartin(at)comcast.net>
To: <zenith601-list(at)matronics.com>
Sent: Tuesday, April 13, 2010 10:54 AM
Subject: Re: Nose Gear
| Quote: |
<bryanmmartin(at)comcast.net>
Don't forget that the rudder cables will loosen significantly with weight
on the nose gear. The tension should be set with the nose wheel off the
ground. I originally set my cable tension with weight on the nose wheel,
after I properly set it with no weight on the wheel, it took a lot less
effort to move the rudder in flight. Now on the ground, my rudder cables
are almost slack.
On Apr 13, 2010, at 8:59 AM, Mark Hubelbank wrote:
>
>
> Chuck,
> Although most have found the extra friction acceptable, it is still
> higher than production aircraft plane I have flown. I find it to be
> marginal to make really nice smooth rudder corrections, not impossible,
> just not as nice as the other extreme (a Grumman AA-5). Note that when
> you tighten the rudder cables the friction will increase some more.
> Be sure the two half's of the bearing block are not too tight. Also
> you need to lubricate the block. This is another thing I never liked,
> having exposed grease in the engine compartment. Not much we can do about
> it.
> After I get the plane back together, I am going to be looking for nice
> ways to reduce the friction as seen in flight.
>>> Guys,
>>> I added the shock cord to the nose gear leg today and I am wondering
>>> why it is so difficult to move the rudder pedals. The shock cord holds
>>> the gear very tightly into the V groove in the Nylon block. I can see
>>> that once the engine weight is added it will take some of the pull out
>>> of the cord. It seams to me that it might be OK on the ground but in
>>> the air it will be very hard to move the rudder. Am I missing something
>>> here?
>>> Chuck Dean
>>> Ch650
>>>
>>>
>
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
do not archive.
|
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larry(at)macsmachine.com
Guest
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| Posted: Sat Apr 17, 2010 4:23 pm Post subject: Nose Gear |
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Chuck,
The nylon block probably doesn't need a vee groove for the nose
strut steering arms. When the gear is hanging, the steering arms weigh
in on these grooves
and cause the nose gear to become stiff. I made my nylon blocks
flat after having that experience and now they are very smooth and light.
See link,
http://www.macsmachine.com/images/gear/full/stratstops.gif
Larry McFarland 601HDS at www.macsmachine.com
| Quote: | >
>
> Guys,
> I added the shock cord to the nose gear leg today and I am wondering
> why it is so difficult to move the rudder pedals. The shock cord
> holds the gear very tightly into the V groove in the Nylon block. I
> can see that once the engine weight is added it will take some of the
> pull out of the cord. It seams to me that it might be OK on the
> ground but in the air it will be very hard to move the rudder. Am I
> missing something here?
> Chuck Dean
> Ch650
>
|
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Thruster87
Joined: 16 Apr 2008
Posts: 193
Location: Australia
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| Posted: Thu Apr 29, 2010 1:03 am Post subject: Re: Nose Gear |
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Beefed up nose wheel fork made from 1/8" 4130 plate and bonded with tank sealant for good measure Cheers T87
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Terry Phillips
Joined: 11 Jan 2006
Posts: 346
Location: Corvallis, MT
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| Posted: Thu Apr 29, 2010 11:54 am Post subject: Nose Gear |
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Larry
I like your design very much. It appears that the HDS bearing design is
significantly different than the XL's.
You say that the rudders are smooth and light now. The question I have is
why did Chris design in the v-notch? It seems to me that the air flow would
tend to keep the rudder centered in flight which is the function of the
v-notch. Is the steering stable on the ground without the notch?
I think that skyhawg's use of springs to avoid the direct coupling between
the rudder and nose gear is another excellent idea. Between his springs and
your bearing and firewall seals, I think you two have significantly
improved the design.
Terry
At 07:23 PM 4/17/2010 -0500, you wrote:
| Quote: | Chuck,
The nylon block probably doesn't need a vee groove for the nose
strut steering arms. When the gear is hanging, the steering arms weigh in
on these grooves
and cause the nose gear to become stiff. I made my nylon blocks
flat after having that experience and now they are very smooth and light.
See link,
http://www.macsmachine.com/images/gear/full/stratstops.gif
Larry McFarland 601HDS at www.macsmachine.com
>>
>>
>>Guys,
>>I added the shock cord to the nose gear leg today and I am wondering why
>>it is so difficult to move the rudder pedals. The shock cord holds the
>>gear very tightly into the V groove in the Nylon block. I can see that
>>once the engine weight is added it will take some of the pull out of the
>>cord. It seams to me that it might be OK on the ground but in the air it
>>will be very hard to move the rudder. Am I missing something here?
>>Chuck Dean
>>Ch650
>Terry Phillips
>ttp44~at~rkymtn.net
>Corvallis MT
>ZU-601XL/Jab 3300 s .. l .. o .. o .. w build kit - Tail & flaps are done;
>Upgrading wings & ailerons per the AMD Safety Directive
>http://www.mykitlog.com/N47TP/
|
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http://www.matronics.com/Navigator?Zenith601-List |
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_________________
Terry Phillips
Corvallis, MT
ttp44<at>rkymtn.net
Zenith 601XL/Jab 3300 slow build kit - Tail feathers done; working on the wings. |
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