Today's Message Index:
----------------------
1. 08:03 AM - Re: Landing gear shake (Jesse Saint)
2. 08:41 AM - Re: Landing gear shake (Geoff Combs)
3. 08:52 AM - Re: Landing gear shake (David Maib)
4. 09:23 AM - Re: Landing gear shake (Scott Schmidt)
5. 09:23 AM - Re: Landing gear shake (Scott Schmidt)
6. 09:44 AM - Re: Landing gear shake (Rene Felker)
7. 09:51 AM - Re: Landing gear shake (Jesse Saint)
8. 10:00 AM - Fuel tank dimple dies (Billy & Tami Britton)
9. 10:37 AM - Re: Fuel tank dimple dies (tsts4)
10. 10:54 AM - Re: Re: Fuel tank dimple dies (Billy & Tami Britton)
11. 11:46 AM - Re: Fuel tank dimple dies (carl.froehlich@verizon.net)
12. 12:57 PM - Re: Landing gear shake (Kelly McMullen)
13. 01:42 PM - Re: Landing gear shake (Pascal)
14. 01:42 PM - Re: Landing gear shake (Don McDonald)
15. 01:48 PM - No longer a project (Eric_Kallio)
16. 02:27 PM - Re: No longer a project (Bruce Johnson)
17. 02:27 PM - Re: No longer a project (Jesse Saint)
18. 02:29 PM - Re: Landing gear shake (Scott Schmidt)
19. 02:32 PM - Re: Landing gear shake (Scott Schmidt)
20. 02:52 PM - Re: Landing gear shake (Jesse Saint)
21. 03:06 PM - Re: No longer a project (Don McDonald)
22. 03:06 PM - Re: Landing gear shake (Robin Marks)
23. 03:44 PM - Re: Crow Harnesses (conradb)
24. 03:45 PM - Re: No longer a project (Jesse Saint)
25. 05:44 PM - Re: Re: Crow Harnesses (DLM)
26. 06:04 PM - Re: Re: Crow Harnesses (Rob Kochman)
27. 06:22 PM - Re: Landing gear shake (Phillip Perry)
28. 06:50 PM - Van's stuffin advertisements in shipments (Bob Leffler)
29. 07:09 PM - Re: Van's stuffin advertisements in shipments (Kelly McMullen)
30. 07:16 PM - Re: Re: Crow Harnesses (Jae Chang)
31. 07:35 PM - Re: Landing gear shake (Scott Schmidt)
Message 1
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| Subject: | Re: Landing gear shake |
I just did a condition inspection on N256H. Before the condition it had
a fair bit of shimmy in the 25-30 mph range after landing. I added
another spacer on the nose gear shock strut and tightened the nose gear
pivot nut one flat. Most of the shimmy went away.
Jesse Saint
Saint Aviation, Inc.
jesse@saintaviation.com
C: 352-427-0285
F: 815-377-3694
On Feb 6, 2011, at 2:09 AM, Scott Schmidt wrote:
> I have posted on this topic before.
> Mine does the exact same at the same speeds as does many other
RV-10's.
> Sometimes balancing the tire fixes/helps, sometimes different tires,
pressures, ect.
> I have tried most with no success. I have talked with Van about it and
he indicated that his personal plane even did it. I have also heard that
when people installed the wheel pants it started. It all comes down to a
poor gear design. A round gear leg is not the optimal design for a
landing gear but is the cheapest shape from a manufacturing point of
view.
> It is not the caliper either. Even if I slow down with no braking it
occurs. I can replicate it on the ground with one wheel jacked up and
use my buffer to get the wheel up to 50 mph and when it slows to around
25 mph, it shakes. It is the system hitting a natural frequency.
> Van said people have put a block of wood on the backside of other RV
models to stop it.
>
> I spent a considerable amount of time re-drilling my gear legs to get
the exact toe-in on both sides and it did not change one thing. I have
tried two different sets of tires, pressures from 25-60 psi all with no
luck. My next plan, when I get to it, is to install the wheel pant
spacers from PlaneAround.com and start stiffening the wheel pant to the
gear. Then I will start finding a good way change the moment of inertia
of the gear leg, stiffening it in the front to back direction.
> I've been told by Vans not to worry about it. Just think of it as a
massage with every landing.
> I will find a way to eliminate it though.
>
> Let me know if you find anything out.
> Thanks, Scott
>
> On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com>
wrote:
>
>>
>> Today I was able to have a guy observe the gear up close as I was
landing. I have been feeling a shake during roll out below 30 mph.
Sometimes not too much but sometimes significant. Applying brakes seems
to make it worse but nothing will make it stop until slowing below 20
mph. Speeds above 30 mph are smooth. He said that the left main was
shaking and it looked to be rapidly moving forward and back.
>> Are others noticing this shaking? Is there a fix or a way to minimize
the shaking that anyone has discovered?
>>
>> Thank you,
>>
>> Roger Standley
>> N291RV
>> 165 hours
>>
>>
>> ========================
>>
ref="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.
com/Navigator?RV10-List
>> ========================
>> ums.matronics.com">http://forums.matronics.com
>> ========================
>>
http://www.matronics.com/contribution">http://www.matronics.com/contributi
on
>> ========================
>>
>
>
>
Message 2
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| Subject: | Landing gear shake |
I mounted a camera on the bottom of my RV-10 to find out what was shaking
and what was not. The main gear has a shake at 34 kts and started
When I put my wheel pants on. I have balanced and changed air pressures with
no real success. The nose gear would shimmy at 15kts if
Tension was loose. The camera shows the wheel pants get into an oscillating
motion. It is an up down motion. And as Scott I believe it is from the
Poor gear design. I have no noticeable shake on grass. My shake seems to be
worse with more load in the airplane. That being said I can break hard
quick thru it and without much shake.
Geoff
Geoff Combs
President
614-834-5227p
614-834-5230f
www.aerosportmodeling.com
_____
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Jesse Saint
Sent: Monday, February 07, 2011 10:59 AM
Subject: Re: RV10-List: Landing gear shake
I just did a condition inspection on N256H. Before the condition it had a
fair bit of shimmy in the 25-30 mph range after landing. I added another
spacer on the nose gear shock strut and tightened the nose gear pivot nut
one flat. Most of the shimmy went away.
Jesse Saint
Saint Aviation, Inc.
jesse@saintaviation.com
C: 352-427-0285
F: 815-377-3694
On Feb 6, 2011, at 2:09 AM, Scott Schmidt wrote:
I have posted on this topic before.
Mine does the exact same at the same speeds as does many other RV-10's.
Sometimes balancing the tire fixes/helps, sometimes different tires,
pressures, ect.
I have tried most with no success. I have talked with Van about it and he
indicated that his personal plane even did it. I have also heard that when
people installed the wheel pants it started. It all comes down to a poor
gear design. A round gear leg is not the optimal design for a landing gear
but is the cheapest shape from a manufacturing point of view.
It is not the caliper either. Even if I slow down with no braking it occurs.
I can replicate it on the ground with one wheel jacked up and use my buffer
to get the wheel up to 50 mph and when it slows to around 25 mph, it shakes.
It is the system hitting a natural frequency.
Van said people have put a block of wood on the backside of other RV models
to stop it.
I spent a considerable amount of time re-drilling my gear legs to get the
exact toe-in on both sides and it did not change one thing. I have tried two
different sets of tires, pressures from 25-60 psi all with no luck. My next
plan, when I get to it, is to install the wheel pant spacers from
PlaneAround.com <http://PlaneAround.com/> and start stiffening the wheel
pant to the gear. Then I will start finding a good way change the moment of
inertia of the gear leg, stiffening it in the front to back direction.
I've been told by Vans not to worry about it. Just think of it as a massage
with every landing.
I will find a way to eliminate it though.
Let me know if you find anything out.
Thanks, Scott
On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com> wrote:
Today I was able to have a guy observe the gear up close as I was landing. I
have been feeling a shake during roll out below 30 mph. Sometimes not too
much but sometimes significant. Applying brakes seems to make it worse but
nothing will make it stop until slowing below 20 mph. Speeds above 30 mph
are smooth. He said that the left main was shaking and it looked to be
rapidly moving forward and back.
Are others noticing this shaking? Is there a fix or a way to minimize the
shaking that anyone has discovered?
Thank you,
Roger Standley
N291RV
165 hours
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Message 3
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| Subject: | Re: Landing gear shake |
I did exactly the same thing as Geoff and got exactly the same results.
David Maib
40559
340 hours
On Feb 7, 2011, at 11:34 AM, Geoff Combs wrote:
> I mounted a camera on the bottom of my RV-10 to find out what was shaking and
what was not. The main gear has a shake at 34 kts and started
> When I put my wheel pants on. I have balanced and changed air pressures with
no real success. The nose gear would shimmy at 15kts if
> Tension was loose. The camera shows the wheel pants get into an oscillating motion.
It is an up down motion. And as Scott I believe it is from the
> Poor gear design. I have no noticeable shake on grass. My shake seems to be worse
with more load in the airplane. That being said I can break hard
> quick thru it and without much shake.
>
> Geoff
>
> Geoff Combs
> President
> 614-834-5227p
> 614-834-5230f
> www.aerosportmodeling.com
>
> From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Jesse Saint
> Sent: Monday, February 07, 2011 10:59 AM
> To: rv10-list@matronics.com
> Subject: Re: RV10-List: Landing gear shake
>
> I just did a condition inspection on N256H. Before the condition it had a fair
bit of shimmy in the 25-30 mph range after landing. I added another spacer
on the nose gear shock strut and tightened the nose gear pivot nut one flat.
Most of the shimmy went away.
>
> Jesse Saint
> Saint Aviation, Inc.
> jesse@saintaviation.com
> C: 352-427-0285
> F: 815-377-3694
>
> On Feb 6, 2011, at 2:09 AM, Scott Schmidt wrote:
>
>
> I have posted on this topic before.
> Mine does the exact same at the same speeds as does many other RV-10's.
> Sometimes balancing the tire fixes/helps, sometimes different tires, pressures,
ect.
> I have tried most with no success. I have talked with Van about it and he indicated
that his personal plane even did it. I have also heard that when people
installed the wheel pants it started. It all comes down to a poor gear design.
A round gear leg is not the optimal design for a landing gear but is the cheapest
shape from a manufacturing point of view.
> It is not the caliper either. Even if I slow down with no braking it occurs.
I can replicate it on the ground with one wheel jacked up and use my buffer to
get the wheel up to 50 mph and when it slows to around 25 mph, it shakes. It
is the system hitting a natural frequency.
> Van said people have put a block of wood on the backside of other RV models to
stop it.
>
> I spent a considerable amount of time re-drilling my gear legs to get the exact
toe-in on both sides and it did not change one thing. I have tried two different
sets of tires, pressures from 25-60 psi all with no luck. My next plan,
when I get to it, is to install the wheel pant spacers from PlaneAround.com and
start stiffening the wheel pant to the gear. Then I will start finding a good
way change the moment of inertia of the gear leg, stiffening it in the front
to back direction.
> I've been told by Vans not to worry about it. Just think of it as a massage with
every landing.
> I will find a way to eliminate it though.
>
> Let me know if you find anything out.
> Thanks, Scott
>
> On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com> wrote:
>
>>
>> Today I was able to have a guy observe the gear up close as I was landing. I
have been feeling a shake during roll out below 30 mph. Sometimes not too much
but sometimes significant. Applying brakes seems to make it worse but nothing
will make it stop until slowing below 20 mph. Speeds above 30 mph are smooth.
He said that the left main was shaking and it looked to be rapidly moving forward
and back.
>> Are others noticing this shaking? Is there a fix or a way to minimize the shaking
that anyone has discovered?
>>
>> Thank you,
>>
>> Roger Standley
>> N291RV
>> 165 hours
>>
>>
>> =========
>> ref="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
>> =========
>> ums.matronics.com">http://forums.matronics.com
>> =========
>> http://www.matronics.com/contribution">http://www.matronics.com/contribution
>> =========
>>
>
>
> href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
> href="http://forums.matronics.com/">http://forums.matronics.com
> href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
>
>
>
>
> href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
> href="http://forums.matronics.com">http://forums.matronics.com
> href="http://www.matronics.com/contribution">http://www.matronics.com/c
>
>
>
Message 4
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| Subject: | Re: Landing gear shake |
Jesse, I really like what you tried and have thought about it. I never had a
shake until around 100 - 150 hours. If the front gear settles down slightly it
changes the toe-in.
If it is still possible can you measure the distance between the prop and the
ground?
Where did you purchase the spacer?
Scott Schmidt
________________________________
From: Jesse Saint <jesse@saintaviation.com>
Sent: Mon, February 7, 2011 8:59:26 AM
Subject: Re: RV10-List: Landing gear shake
I just did a condition inspection on N256H. Before the condition it had a fair
bit of shimmy in the 25-30 mph range after landing. I added another spacer on
the nose gear shock strut and tightened the nose gear pivot nut one flat. Most
of the shimmy went away.
Jesse Saint
Saint Aviation, Inc.
jesse@saintaviation.com
C: 352-427-0285
F: 815-377-3694
On Feb 6, 2011, at 2:09 AM, Scott Schmidt wrote:
I have posted on this topic before.
>Mine does the exact same at the same speeds as does many other RV-10's.
>Sometimes balancing the tire fixes/helps, sometimes different tires, pressures,
>ect.
>I have tried most with no success. I have talked with Van about it and he
>indicated that his personal plane even did it. I have also heard that when
>people installed the wheel pants it started. It all comes down to a poor gear
>design. A round gear leg is not the optimal design for a landing gear but is the
>cheapest shape from a manufacturing point of view.
>It is not the caliper either. Even if I slow down with no braking it occurs. I
>can replicate it on the ground with one wheel jacked up and use my buffer to get
>the wheel up to 50 mph and when it slows to around 25 mph, it shakes. It is the
>system hitting a natural frequency.
>Van said people have put a block of wood on the backside of other RV models to
>stop it.
>
>
>I spent a considerable amount of time re-drilling my gear legs to get the exact
>toe-in on both sides and it did not change one thing. I have tried two different
>sets of tires, pressures from 25-60 psi all with no luck. My next plan, when I
>get to it, is to install the wheel pant spacers from PlaneAround.com and start
>stiffening the wheel pant to the gear. Then I will start finding a good way
>change the moment of inertia of the gear leg, stiffening it in the front to back
>direction.
>I've been told by Vans not to worry about it. Just think of it as a massage with
>every landing.
>I will find a way to eliminate it though.
>
>
>Let me know if you find anything out.
>Thanks, Scott
>
>On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com> wrote:
>
>
>>Today I was able to have a guy observe the gear up close as I was landing.
>>I have been feeling a shake during roll out below 30 mph. Sometimes not too
>>much but sometimes significant. Applying brakes seems to make it worse but
>>nothing will make it stop until slowing below 20 mph. Speeds above 30 mph are
>>smooth. He said that the left main was shaking and it looked to be rapidly
>>moving forward and back.
>>
>>
>>Are others noticing this shaking? Is there a fix or a way to minimize the
>>shaking that anyone has discovered?
>>
>>Thank you,
>>
>>Roger Standley
>>N291RV
>>165 hours
>>
>> ==========
>>ref="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List=========
>> ums.matronics.com">http://forums.matronics.com
>>=========
>>http://www.matronics.com/contribution">http://www.matronics.com/contribution=========
>>
>>
>>
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n
Message 5
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| Subject: | Re: Landing gear shake |
One more question, how did you know you needed to add a spacer during the
conditional inspection?
Is there something you are looking at?
Scott Schmidt
________________________________
From: Jesse Saint <jesse@saintaviation.com>
Sent: Mon, February 7, 2011 8:59:26 AM
Subject: Re: RV10-List: Landing gear shake
I just did a condition inspection on N256H. Before the condition it had a fair
bit of shimmy in the 25-30 mph range after landing. I added another spacer on
the nose gear shock strut and tightened the nose gear pivot nut one flat. Most
of the shimmy went away.
Jesse Saint
Saint Aviation, Inc.
jesse@saintaviation.com
C: 352-427-0285
F: 815-377-3694
On Feb 6, 2011, at 2:09 AM, Scott Schmidt wrote:
I have posted on this topic before.
>Mine does the exact same at the same speeds as does many other RV-10's.
>Sometimes balancing the tire fixes/helps, sometimes different tires, pressures,
>ect.
>I have tried most with no success. I have talked with Van about it and he
>indicated that his personal plane even did it. I have also heard that when
>people installed the wheel pants it started. It all comes down to a poor gear
>design. A round gear leg is not the optimal design for a landing gear but is the
>cheapest shape from a manufacturing point of view.
>It is not the caliper either. Even if I slow down with no braking it occurs. I
>can replicate it on the ground with one wheel jacked up and use my buffer to get
>the wheel up to 50 mph and when it slows to around 25 mph, it shakes. It is the
>system hitting a natural frequency.
>Van said people have put a block of wood on the backside of other RV models to
>stop it.
>
>
>I spent a considerable amount of time re-drilling my gear legs to get the exact
>toe-in on both sides and it did not change one thing. I have tried two different
>sets of tires, pressures from 25-60 psi all with no luck. My next plan, when I
>get to it, is to install the wheel pant spacers from PlaneAround.com and start
>stiffening the wheel pant to the gear. Then I will start finding a good way
>change the moment of inertia of the gear leg, stiffening it in the front to back
>direction.
>I've been told by Vans not to worry about it. Just think of it as a massage with
>every landing.
>I will find a way to eliminate it though.
>
>
>Let me know if you find anything out.
>Thanks, Scott
>
>On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com> wrote:
>
>
>>Today I was able to have a guy observe the gear up close as I was landing.
>>I have been feeling a shake during roll out below 30 mph. Sometimes not too
>>much but sometimes significant. Applying brakes seems to make it worse but
>>nothing will make it stop until slowing below 20 mph. Speeds above 30 mph are
>>smooth. He said that the left main was shaking and it looked to be rapidly
>>moving forward and back.
>>
>>
>>Are others noticing this shaking? Is there a fix or a way to minimize the
>>shaking that anyone has discovered?
>>
>>Thank you,
>>
>>Roger Standley
>>N291RV
>>165 hours
>>
>> ==========
>>ref="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List=========
>> ums.matronics.com">http://forums.matronics.com
>>=========
>>http://www.matronics.com/contribution">http://www.matronics.com/contribution=========
>>
>>
>>
href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-Listhref="http://forums.matronics.com/">http://forums.matronics.com
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Message 6
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| Subject: | Landing gear shake |
Jesse, I am also interested in how to tell you need an additional spacer.
My condition inspection starts at the end of this month..I have 150 tack
hours on the airplane.
Scott, there were two spacers provide in the kit..now if I can just find the
second one..
Rene' Felker
N423CF
801-721-6080
From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Scott Schmidt
Sent: Monday, February 07, 2011 10:17 AM
Subject: Re: RV10-List: Landing gear shake
Jesse, I really like what you tried and have thought about it. I never had
a shake until around 100 - 150 hours. If the front gear settles down
slightly it changes the toe-in.
If it is still possible can you measure the distance between the prop and
the ground?
Where did you purchase the spacer?
Scott Schmidt
_____
From: Jesse Saint <jesse@saintaviation.com>
Sent: Mon, February 7, 2011 8:59:26 AM
Subject: Re: RV10-List: Landing gear shake
I just did a condition inspection on N256H. Before the condition it had a
fair bit of shimmy in the 25-30 mph range after landing. I added another
spacer on the nose gear shock strut and tightened the nose gear pivot nut
one flat. Most of the shimmy went away.
Jesse Saint
Saint Aviation, Inc.
jesse@saintaviation.com
C: 352-427-0285
F: 815-377-3694
On Feb 6, 2011, at 2:09 AM, Scott Schmidt wrote:
I have posted on this topic before.
Mine does the exact same at the same speeds as does many other RV-10's.
Sometimes balancing the tire fixes/helps, sometimes different tires,
pressures, ect.
I have tried most with no success. I have talked with Van about it and he
indicated that his personal plane even did it. I have also heard that when
people installed the wheel pants it started. It all comes down to a poor
gear design. A round gear leg is not the optimal design for a landing gear
but is the cheapest shape from a manufacturing point of view.
It is not the caliper either. Even if I slow down with no braking it occurs.
I can replicate it on the ground with one wheel jacked up and use my buffer
to get the wheel up to 50 mph and when it slows to around 25 mph, it shakes.
It is the system hitting a natural frequency.
Van said people have put a block of wood on the backside of other RV models
to stop it.
I spent a considerable amount of time re-drilling my gear legs to get the
exact toe-in on both sides and it did not change one thing. I have tried two
different sets of tires, pressures from 25-60 psi all with no luck. My next
plan, when I get to it, is to install the wheel pant spacers from
PlaneAround.com <http://PlaneAround.com/> and start stiffening the wheel
pant to the gear. Then I will start finding a good way change the moment of
inertia of the gear leg, stiffening it in the front to back direction.
I've been told by Vans not to worry about it. Just think of it as a massage
with every landing.
I will find a way to eliminate it though.
Let me know if you find anything out.
Thanks, Scott
On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com> wrote:
Today I was able to have a guy observe the gear up close as I was landing. I
have been feeling a shake during roll out below 30 mph. Sometimes not too
much but sometimes significant. Applying brakes seems to make it worse but
nothing will make it stop until slowing below 20 mph. Speeds above 30 mph
are smooth. He said that the left main was shaking and it looked to be
rapidly moving forward and back.
Are others noticing this shaking? Is there a fix or a way to minimize the
shaking that anyone has discovered?
Thank you,
Roger Standley
N291RV
165 hours
=========
ref="http://www.matronics.com/Navigator?RV10-List
<http://www.matronics.com/Navigator?RV10-List%22%3Ehttp://www.matronics.com/
Navigator?RV10-List>
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<http://www.matronics.com/contribution%22%3Ehttp:/www.matronics.com/contribu
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atronics.com>
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Message 7
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| Subject: | Re: Landing gear shake |
The spacer came from Van's. It's part # U-1002 on page 46-07. I had
someone hold the tail down and then I lifted up on the nose gear to see
if it was tight. It moved, so I knew it needed another spacer. You can
also tell if the bolt holding the cap on can move freely when you loosen
the nut. The distance from the prop to the ground depends on how the
engine hangs on the engine mounts and other things, but I'll measure
it...7.5".
Jesse Saint
Saint Aviation, Inc.
jesse@saintaviation.com
C: 352-427-0285
F: 815-377-3694
On Feb 7, 2011, at 12:16 PM, Scott Schmidt wrote:
> Jesse, I really like what you tried and have thought about it. I
never had a shake until around 100 - 150 hours. If the front gear
settles down slightly it changes the toe-in.
> If it is still possible can you measure the distance between the prop
and the ground?
> Where did you purchase the spacer?
>
> Scott Schmidt
>
>
>
> From: Jesse Saint <jesse@saintaviation.com>
> To: rv10-list@matronics.com
> Sent: Mon, February 7, 2011 8:59:26 AM
> Subject: Re: RV10-List: Landing gear shake
>
> I just did a condition inspection on N256H. Before the condition it
had a fair bit of shimmy in the 25-30 mph range after landing. I added
another spacer on the nose gear shock strut and tightened the nose gear
pivot nut one flat. Most of the shimmy went away.
>
> Jesse Saint
> Saint Aviation, Inc.
> jesse@saintaviation.com
> C: 352-427-0285
> F: 815-377-3694
>
> On Feb 6, 2011, at 2:09 AM, Scott Schmidt wrote:
>
>> I have posted on this topic before.
>> Mine does the exact same at the same speeds as does many other
RV-10's.
>> Sometimes balancing the tire fixes/helps, sometimes different tires,
pressures, ect.
>> I have tried most with no success. I have talked with Van about it
and he indicated that his personal plane even did it. I have also heard
that when people installed the wheel pants it started. It all comes down
to a poor gear design. A round gear leg is not the optimal design for a
landing gear but is the cheapest shape from a manufacturing point of
view.
>> It is not the caliper either. Even if I slow down with no braking it
occurs. I can replicate it on the ground with one wheel jacked up and
use my buffer to get the wheel up to 50 mph and when it slows to around
25 mph, it shakes. It is the system hitting a natural frequency.
>> Van said people have put a block of wood on the backside of other RV
models to stop it.
>>
>> I spent a considerable amount of time re-drilling my gear legs to get
the exact toe-in on both sides and it did not change one thing. I have
tried two different sets of tires, pressures from 25-60 psi all with no
luck. My next plan, when I get to it, is to install the wheel pant
spacers from PlaneAround.com and start stiffening the wheel pant to the
gear. Then I will start finding a good way change the moment of inertia
of the gear leg, stiffening it in the front to back direction.
>> I've been told by Vans not to worry about it. Just think of it as a
massage with every landing.
>> I will find a way to eliminate it though.
>>
>> Let me know if you find anything out.
>> Thanks, Scott
>>
>> On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com>
wrote:
>>
>>>
>>> Today I was able to have a guy observe the gear up close as I was
landing. I have been feeling a shake during roll out below 30 mph.
Sometimes not too much but sometimes significant. Applying brakes seems
to make it worse but nothing will make it stop until slowing below 20
mph. Speeds above 30 mph are smooth. He said that the left main was
shaking and it looked to be rapidly moving forward and back.
>>> Are others noticing this shaking? Is there a fix or a way to
minimize the shaking that anyone has discovered?
>>>
>>> Thank you,
>>>
>>> Roger Standley
>>> N291RV
>>> 165 hours
>>>
>>>
>>> =========
>>>
ref="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.
com/Navigator?RV10-List=========
>>> ums.matronics.com">http://forums.matronics.com
>>> =========
>>>
http://www.matronics.com/contribution">http://www.matronics.com/contributi
on=========
>>>
>>
>>
>>
href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics
.com/Navigator?RV10-Listhref="http://forums.matronics.com/">http://forum
s.matronics.com
>>
href="http://www.matronics.com/contribution">http://www.matronics.com/co
ntribution
>>
>
>
>
>
>
>
>
>
Message 8
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| Subject: | Fuel tank dimple dies |
I'm ready to dimple the fuel tanks. I have the tank dimple dies. My
question is do I dimple both the holes in the skins and interior parts
with the tank dies or just the interior parts with the tank dies?
Doesn't seem like the skins would need the "oversized" dimple but they
may have to be the same as the interior parts.
Bill
Message 9
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| Subject: | Re: Fuel tank dimple dies |
I used them on both. To be honest it didn't even occur to me not to.
--------
Todd Stovall
728TT (reserved)
RV-10 Empacone, Wings, Fuse
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=330008#330008
Message 10
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| Subject: | Re: Fuel tank dimple dies |
Good enough. Thanks again for the help.
Bill
--------------------------------------------------
From: "tsts4" <tsts4@verizon.net>
Sent: Monday, February 07, 2011 12:34 PM
Subject: RV10-List: Re: Fuel tank dimple dies
>
> I used them on both. To be honest it didn't even occur to me not to.
>
> --------
> Todd Stovall
> 728TT (reserved)
> RV-10 Empacone, Wings, Fuse
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=330008#330008
>
>
>
>
>
>
>
>
>
>
Message 11
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| Subject: | Re: Fuel tank dimple dies |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Message 12
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| Subject: | Re: Landing gear shake |
Has anyone tried counter balancing the wheel pants with some weight up
front, just like your control surfaces have? I don't remember where I
heard that suggestion, but might make sense to change the harmonic
frequency of the wheel pants.
Kellyt
On Mon, Feb 7, 2011 at 9:34 AM, Geoff Combs
<g.combs@aerosportmodeling.com> wrote:
> I mounted a camera on the bottom of my RV-10 to find out what was shaking
> and what was not. The main gear has a shake at 34 kts and started
>
> When I put my wheel pants on. I have balanced and changed air pressures with
> no real success. The nose gear would shimmy at 15kts if
>
> Tension was loose. The camera shows the wheel pants get into an oscillating
> motion. It is an up down motion. And as Scott I believe it is from the
>
> Poor gear design. I have no noticeable shake on grass. My shake seems to be
> worse with more load in the airplane. That being said I can break hard
>
> quick thru it and without much shake.
>
>
> Geoff
>
>
> Geoff Combs
>
> President
>
> 614-834-5227p
> 614-834-5230f
>
> www.aerosportmodeling.com
>
>
> ________________________________
>
> From: owner-rv10-list-server@matronics.com
> [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Jesse Saint
> Sent: Monday, February 07, 2011 10:59 AM
> To: rv10-list@matronics.com
> Subject: Re: RV10-List: Landing gear shake
>
>
> I just did a condition inspection on N256H. Before the condition it had a
> fair bit of shimmy in the 25-30 mph range after landing. I added another
> spacer on the nose gear shock strut and tightened the nose gear pivot nut
> one flat. Most of the shimmy went away.
>
>
> Jesse Saint
> Saint Aviation, Inc.
> jesse@saintaviation.com
> C: 352-427-0285
> F: 815-377-3694
>
>
> On Feb 6, 2011, at 2:09 AM, Scott Schmidt wrote:
>
> I have posted on this topic before.
>
> Mine does the exact same at the same speeds as does many other RV-10's.
>
> Sometimes balancing the tire fixes/helps, sometimes different tires,
> pressures, ect.
>
> I have tried most with no success. I have talked with Van about it and he
> indicated that his personal plane even did it. I have also heard that when
> people installed the wheel pants it started. It all comes down to a poor
> gear design. A round gear leg is not the optimal design for a landing gear
> but is the cheapest shape from a manufacturing point of view.
>
> It is not the caliper either. Even if I slow down with no braking it occurs.
> I can replicate it on the ground with one wheel jacked up and use my buffer
> to get the wheel up to 50 mph and when it slows to around 25 mph, it shakes.
> It is the system hitting a natural frequency.
>
> Van said people have put a block of wood on the backside of other RV models
> to stop it.
>
>
> I spent a considerable amount of time re-drilling my gear legs to get the
> exact toe-in on both sides and it did not change one thing. I have tried two
> different sets of tires, pressures from 25-60 psi all with no luck. My next
> plan, when I get to it, is to install the wheel pant spacers from
> PlaneAround.com and start stiffening the wheel pant to the gear. Then I will
> start finding a good way change the moment of inertia of the gear leg,
> stiffening it in the front to back direction.
>
> I've been told by Vans not to worry about it. Just think of it as a massage
> with every landing.
>
> I will find a way to eliminate it though.
>
>
> Let me know if you find anything out.
>
> Thanks, Scott
>
> On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com> wrote:
>
> Today I was able to have a guy observe the gear up close as I was landing.
> Ihave beenfeeling a shake during roll out below 30 mph. Sometimes not too
> much but sometimes significant. Applying brakes seems to make it worse but
> nothingwill make it stop until slowing below 20 mph. Speeds above 30 mph
> are smooth. He said that the left main was shaking andit looked to be
> rapidly moving forward and back.
>
> Are others noticing this shaking? Is there a fix or a way to minimize the
> shaking that anyone has discovered?
>
>
> Thank you,
>
>
> Roger Standley
>
> N291RV
>
> 165 hours
>
>
> =========
>
> ref="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
>
> =========
>
> ums.matronics.com">http://forums.matronics.com
>
> =========
>
> http://www.matronics.com/contribution">http://www.matronics.com/contribution
>
> =========
>
>
> href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
>
> href="http://forums.matronics.com/">http://forums.matronics.com
>
> href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
>
>
> href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
> href="http://forums.matronics.com">http://forums.matronics.com
> href="http://www.matronics.com/contribution">http://www.matronics.com/c
>
>
Message 13
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| Subject: | Re: Landing gear shake |
Tim Olson and a few others. Tim has the writeup on his website.
-----Original Message-----
From: Kelly McMullen
Sent: Monday, February 07, 2011 12:17 PM
Subject: Re: RV10-List: Landing gear shake
Has anyone tried counter balancing the wheel pants with some weight up
front, just like your control surfaces have? I don't remember where I
heard that suggestion, but might make sense to change the harmonic
frequency of the wheel pants.
Kellyt
On Mon, Feb 7, 2011 at 9:34 AM, Geoff Combs
<g.combs@aerosportmodeling.com> wrote:
> I mounted a camera on the bottom of my RV-10 to find out what was shaking
> and what was not. The main gear has a shake at 34 kts and started
>
> When I put my wheel pants on. I have balanced and changed air pressures
> with
> no real success. The nose gear would shimmy at 15kts if
>
> Tension was loose. The camera shows the wheel pants get into an
> oscillating
> motion. It is an up down motion. And as Scott I believe it is from the
>
> Poor gear design. I have no noticeable shake on grass. My shake seems to
> be
> worse with more load in the airplane. That being said I can break hard
>
> quick thru it and without much shake.
>
>
> Geoff
>
>
> Geoff Combs
>
> President
>
> 614-834-5227p
> 614-834-5230f
>
> www.aerosportmodeling.com
>
>
> ________________________________
>
> From: owner-rv10-list-server@matronics.com
> [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Jesse Saint
> Sent: Monday, February 07, 2011 10:59 AM
> To: rv10-list@matronics.com
> Subject: Re: RV10-List: Landing gear shake
>
>
> I just did a condition inspection on N256H. Before the condition it had a
> fair bit of shimmy in the 25-30 mph range after landing. I added another
> spacer on the nose gear shock strut and tightened the nose gear pivot nut
> one flat. Most of the shimmy went away.
>
>
> Jesse Saint
> Saint Aviation, Inc.
> jesse@saintaviation.com
> C: 352-427-0285
> F: 815-377-3694
>
>
> On Feb 6, 2011, at 2:09 AM, Scott Schmidt wrote:
>
> I have posted on this topic before.
>
> Mine does the exact same at the same speeds as does many other RV-10's.
>
> Sometimes balancing the tire fixes/helps, sometimes different tires,
> pressures, ect.
>
> I have tried most with no success. I have talked with Van about it and he
> indicated that his personal plane even did it. I have also heard that when
> people installed the wheel pants it started. It all comes down to a poor
> gear design. A round gear leg is not the optimal design for a landing gear
> but is the cheapest shape from a manufacturing point of view.
>
> It is not the caliper either. Even if I slow down with no braking it
> occurs.
> I can replicate it on the ground with one wheel jacked up and use my
> buffer
> to get the wheel up to 50 mph and when it slows to around 25 mph, it
> shakes.
> It is the system hitting a natural frequency.
>
> Van said people have put a block of wood on the backside of other RV
> models
> to stop it.
>
>
> I spent a considerable amount of time re-drilling my gear legs to get the
> exact toe-in on both sides and it did not change one thing. I have tried
> two
> different sets of tires, pressures from 25-60 psi all with no luck. My
> next
> plan, when I get to it, is to install the wheel pant spacers from
> PlaneAround.com and start stiffening the wheel pant to the gear. Then I
> will
> start finding a good way change the moment of inertia of the gear leg,
> stiffening it in the front to back direction.
>
> I've been told by Vans not to worry about it. Just think of it as a
> massage
> with every landing.
>
> I will find a way to eliminate it though.
>
>
> Let me know if you find anything out.
>
> Thanks, Scott
>
> On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com> wrote:
>
> Today I was able to have a guy observe the gear up close as I was landing.
> I have been feeling a shake during roll out below 30 mph. Sometimes not
> too
> much but sometimes significant. Applying brakes seems to make it worse but
> nothing will make it stop until slowing below 20 mph. Speeds above 30 mph
> are smooth. He said that the left main was shaking and it looked to be
> rapidly moving forward and back.
>
> Are others noticing this shaking? Is there a fix or a way to minimize the
> shaking that anyone has discovered?
>
>
> Thank you,
>
>
> Roger Standley
>
> N291RV
>
> 165 hours
>
>
> =========
>
> ref="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
>
> =========
>
> ums.matronics.com">http://forums.matronics.com
>
> =========
>
> http://www.matronics.com/contribution">http://www.matronics.com/contribution
>
> =========
>
>
> href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
>
> href="http://forums.matronics.com/">http://forums.matronics.com
>
> href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
>
>
> href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
> href="http://forums.matronics.com">http://forums.matronics.com
> href="http://www.matronics.com/contribution">http://www.matronics.com/c
>
>
Message 14
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|
| Subject: | Re: Landing gear shake |
Yep. lot's of us have done it.... but it seems we all end up with some amou
nt of =0A"shake".- Mine disappeared totally.... for quite a while after i
nstalling =0AGoodyear FCIII's.- I have a small amount now, but acceptable
.--Always try to =0Aavoid braking as long as possible.=0ADon- =0A=0A
=0A=0A=0A________________________________=0AFrom: Kelly McMullen <apilot2@g
mail.com>=0ATo: rv10-list@matronics.com=0ASent: Mon, February 7, 2011 2:17:
06 PM=0ASubject: Re: RV10-List: Landing gear shake=0A=0A--> RV10-List messa
ge posted by: Kelly McMullen <apilot2@gmail.com>=0A=0AHas anyone tried coun
ter balancing the wheel pants with some weight up=0Afront, just like your c
ontrol surfaces have? I don't remember where I=0Aheard that suggestion, but
might make sense to change the harmonic=0Afrequency of the wheel pants.=0A
Kellyt=0A=0AOn Mon, Feb 7, 2011 at 9:34 AM, Geoff Combs=0A<g.combs@aerospor
tmodeling.com> wrote:=0A> I mounted a camera on the bottom of my RV-10 to f
ind out what was shaking=0A> and what was not. The main gear has a shake at
34 kts and started=0A>=0A> When I put my wheel pants on. I have balanced a
nd changed air pressures with=0A> no real success. The nose gear would shim
my at 15kts if=0A>=0A> Tension was loose. The camera shows the wheel pants
get into an oscillating=0A> motion. It is an up down motion. And as Scott I
believe it is from the=0A>=0A> Poor gear design. I have no noticeable shak
e on grass. My shake seems to be=0A> worse with more load in the airplane.
That being said I can break hard=0A>=0A> quick thru it and without much sha
ke.=0A>=0A>=0A>=0A> Geoff=0A>=0A>=0A>=0A> Geoff Combs=0A>=0A> President=0A>
=0A> 614-834-5227p=0A> 614-834-5230f=0A>=0A> www.aerosportmodeling.com=0A>
=0A>=0A>=0A> ________________________________=0A>=0A> From: owner-rv10-list
-server@matronics.com=0A> [mailto:owner-rv10-list-server@matronics.com] On
Behalf Of Jesse Saint=0A> Sent: Monday, February 07, 2011 10:59 AM=0A> To:
rv10-list@matronics.com=0A> Subject: Re: RV10-List: Landing gear shake=0A>
=0A>=0A>=0A> I just did a condition inspection on N256H. -Before the cond
ition it had a=0A> fair bit of shimmy in the 25-30 mph range after landing.
-I added another=0A> spacer on the nose gear shock strut and tightened t
he nose gear pivot nut=0A> one flat. -Most of the shimmy went away.=0A>
=0A>=0A>=0A> Jesse Saint=0A> Saint Aviation, Inc.=0A> jesse@saintaviation.c
om=0A> C: 352-427-0285=0A> F: 815-377-3694=0A>=0A>=0A>=0A> On Feb 6, 2011,
at 2:09 AM, Scott Schmidt wrote:=0A>=0A> I have posted on this topic before
.=0A>=0A> Mine does the exact same at the same speeds as does many other RV
-10's.=0A>=0A> Sometimes balancing the tire fixes/helps, sometimes differen
t tires,=0A> pressures, ect.=0A>=0A> I have tried most with no success. I h
ave talked with Van about it and he=0A> indicated that his personal plane e
ven did it. I have also heard that when=0A> people installed the wheel pant
s it started. It all comes down to a poor=0A> gear design. A round gear leg
is not the optimal design for a landing gear=0A> but is the cheapest shape
from a manufacturing point of view.=0A>=0A> It is not the caliper either.
Even if I slow down with no braking it occurs.=0A> I can replicate it on th
e ground with one wheel jacked up and use my buffer=0A> to get the wheel up
to 50 mph and when it slows to around 25 mph, it shakes.=0A> It is the sys
tem hitting a natural frequency.=0A>=0A> Van said people have put a block o
f wood on the backside of other RV models=0A> to stop it.=0A>=0A>=0A>=0A> I
spent a considerable amount of time re-drilling my gear legs to get the=0A
> exact toe-in on both sides and it did not change one thing. I have tried
two=0A> different sets of tires, pressures from 25-60 psi all with no luck.
My next=0A> plan, when I get to it, is to install the wheel pant spacers f
rom=0A> PlaneAround.com and start stiffening the wheel pant to the gear. Th
en I will=0A> start finding a good way change the moment of inertia of the
gear leg,=0A> stiffening it in the front to back direction.=0A>=0A> I've be
en told by Vans not to worry about it. Just think of it as a massage=0A> wi
th every landing.=0A>=0A> I will find a way to eliminate it though.=0A>=0A>
=0A>=0A> Let me know if you find anything out.=0A>=0A> Thanks, Scott=0A>=0A
> On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com> wrote:
=0A>=0A> Today I was able to have a guy observe the gear up close as I was
landing.=0A> I-have been-feeling a shake during roll out below 30 mph.
Sometimes not too=0A> much but sometimes significant. Applying brakes seems
to make it worse but=0A> nothing-will make it stop until slowing below 2
0 mph. Speeds above 30 mph=0A> are smooth. He said that the left main was s
haking and-it looked to be=0A> rapidly moving forward and back.=0A>=0A> A
re others noticing this shaking? Is there a fix or a way to minimize the=0A
> shaking that anyone has discovered?=0A>=0A>=0A>=0A> Thank you,=0A>=0A>=0A
>=0A> Roger Standley=0A>=0A> N291RV=0A>=0A> 165 hours=0A>=0A>=0A>=0A>=0A>
=0A> ===========0A>=0A>ref="http://www.matronics.com/
Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List=0A>t=0A>
=0A> ===========0A>=0A> ums.matronics.com">http://forum
s.matronics.com=0A>=0A> ===========0A>=0A> http://www.m
atronics.com/contribution">http://www.matronics.com/contribution=0A>=0A>
===========0A>=0A>=0A>=0A>=0A>=0A>=0A>=0A>href="http:
//www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator
?RV10-List=0A>t=0A>=0A> href="http://forums.matronics.com/">http://forums
.matronics.com=0A>=0A>href="http://www.matronics.com/contribution">http:/
/www.matronics.com/contribution=0A>n=0A>=0A>=0A>=0A>=0A>=0A>href="http://
www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?R
V10-List=0A>t=0A> href="http://forums.matronics.com">http://forums.matron
ics.com=0A> href="http://www.matronics.com/contribution">http://www.matro
=========================0A
=0A=0A
Message 15
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| Subject: | No longer a project |
DAR stopped by yesterday afternoon. He had already inspected it apart and wanted
it all together. He took a look at it, watched me run it and taxi it around
the airfield. Satisfied, and after 45 minutes of paperwork he handed me the airworthiness
certificate. I guess it is no longer a project. Now it is an airplane.
It was too late in the day to fly, sun was going down. Weather today was
absolute garbage. Maybe first flight next Saturday, just waiting on weather. Already
starting to get the grin and haven't even flown it yet.
Eric
N518RV
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=330043#330043
Message 16
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| Subject: | Re: No longer a project |
Congrats on the airworthiness, Your DAR seems a bit anal. Hope your first f
light =0Ais flawless.=0A=0A151BJ 38.6 hrs=0A=0A=0A=0A=0A___________________
_____________=0AFrom: Eric_Kallio <scout019@msn.com>=0ATo: rv10-list@matron
ics.com=0ASent: Mon, February 7, 2011 2:46:16 PM=0ASubject: RV10-List: No l
19@msn.com>=0A=0ADAR stopped by yesterday afternoon. He had already inspect
ed it apart and wanted =0Ait all together. He took a look at it, watched me
run it and taxi it around the =0Aairfield. Satisfied, and after 45 minutes
of paperwork he handed me the =0Aairworthiness certificate. I guess it is
no longer a project. Now it is an =0Aairplane. It was too late in the day t
o fly, sun was going down. Weather today =0Awas absolute garbage. Maybe fir
st flight next Saturday, just waiting on weather. =0AAlready starting to ge
t the grin and haven't even flown it yet.=0A=0AEric=0AN518RV=0A=0A=0A=0A=0A
Read this topic online here:=0A=0Ahttp://forums.matronics.com/viewtopic.php
=0A=0A=0A
Message 17
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| Subject: | Re: No longer a project |
"I guess it is no longer a project"? Who have you been talking to? It'll always
be a project!!! CONGRATS!
Jesse Saint
Saint Aviation, Inc.
jesse@saintaviation.com
C: 352-427-0285
F: 815-377-3694
On Feb 7, 2011, at 4:46 PM, Eric_Kallio wrote:
>
> DAR stopped by yesterday afternoon. He had already inspected it apart and wanted
it all together. He took a look at it, watched me run it and taxi it around
the airfield. Satisfied, and after 45 minutes of paperwork he handed me the
airworthiness certificate. I guess it is no longer a project. Now it is an airplane.
It was too late in the day to fly, sun was going down. Weather today was
absolute garbage. Maybe first flight next Saturday, just waiting on weather.
Already starting to get the grin and haven't even flown it yet.
>
> Eric
> N518RV
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=330043#330043
>
>
>
>
>
>
>
>
>
>
Message 18
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| Subject: | Re: Landing gear shake |
Yes, I did that as well with no change.
Scott Schmidt
________________________________
From: Kelly McMullen <apilot2@gmail.com>
Sent: Mon, February 7, 2011 1:17:06 PM
Subject: Re: RV10-List: Landing gear shake
Has anyone tried counter balancing the wheel pants with some weight up
front, just like your control surfaces have? I don't remember where I
heard that suggestion, but might make sense to change the harmonic
frequency of the wheel pants.
Kellyt
On Mon, Feb 7, 2011 at 9:34 AM, Geoff Combs
<g.combs@aerosportmodeling.com> wrote:
> I mounted a camera on the bottom of my RV-10 to find out what was shaking
> and what was not. The main gear has a shake at 34 kts and started
>
> When I put my wheel pants on. I have balanced and changed air pressures with
> no real success. The nose gear would shimmy at 15kts if
>
> Tension was loose. The camera shows the wheel pants get into an oscillating
> motion. It is an up down motion. And as Scott I believe it is from the
>
> Poor gear design. I have no noticeable shake on grass. My shake seems to be
> worse with more load in the airplane. That being said I can break hard
>
> quick thru it and without much shake.
>
>
> Geoff
>
>
> Geoff Combs
>
> President
>
> 614-834-5227p
> 614-834-5230f
>
> www.aerosportmodeling.com
>
>
> ________________________________
>
> From: owner-rv10-list-server@matronics.com
> [mailto:owner-rv10-list-server@matronics.com] On Behalf Of Jesse Saint
> Sent: Monday, February 07, 2011 10:59 AM
> To: rv10-list@matronics.com
> Subject: Re: RV10-List: Landing gear shake
>
>
> I just did a condition inspection on N256H. Before the condition it had a
> fair bit of shimmy in the 25-30 mph range after landing. I added another
> spacer on the nose gear shock strut and tightened the nose gear pivot nut
> one flat. Most of the shimmy went away.
>
>
> Jesse Saint
> Saint Aviation, Inc.
> jesse@saintaviation.com
> C: 352-427-0285
> F: 815-377-3694
>
>
> On Feb 6, 2011, at 2:09 AM, Scott Schmidt wrote:
>
> I have posted on this topic before.
>
> Mine does the exact same at the same speeds as does many other RV-10's.
>
> Sometimes balancing the tire fixes/helps, sometimes different tires,
> pressures, ect.
>
> I have tried most with no success. I have talked with Van about it and he
> indicated that his personal plane even did it. I have also heard that when
> people installed the wheel pants it started. It all comes down to a poor
> gear design. A round gear leg is not the optimal design for a landing gear
> but is the cheapest shape from a manufacturing point of view.
>
> It is not the caliper either. Even if I slow down with no braking it occurs.
> I can replicate it on the ground with one wheel jacked up and use my buffer
> to get the wheel up to 50 mph and when it slows to around 25 mph, it shakes.
> It is the system hitting a natural frequency.
>
> Van said people have put a block of wood on the backside of other RV models
> to stop it.
>
>
> I spent a considerable amount of time re-drilling my gear legs to get the
> exact toe-in on both sides and it did not change one thing. I have tried two
> different sets of tires, pressures from 25-60 psi all with no luck. My next
> plan, when I get to it, is to install the wheel pant spacers from
> PlaneAround.com and start stiffening the wheel pant to the gear. Then I will
> start finding a good way change the moment of inertia of the gear leg,
> stiffening it in the front to back direction.
>
> I've been told by Vans not to worry about it. Just think of it as a massage
> with every landing.
>
> I will find a way to eliminate it though.
>
>
> Let me know if you find anything out.
>
> Thanks, Scott
>
> On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com> wrote:
>
> Today I was able to have a guy observe the gear up close as I was landing.
> I have been feeling a shake during roll out below 30 mph. Sometimes not too
> much but sometimes significant. Applying brakes seems to make it worse but
> nothing will make it stop until slowing below 20 mph. Speeds above 30 mph
> are smooth. He said that the left main was shaking and it looked to be
> rapidly moving forward and back.
>
> Are others noticing this shaking? Is there a fix or a way to minimize the
> shaking that anyone has discovered?
>
>
> Thank you,
>
>
> Roger Standley
>
> N291RV
>
> 165 hours
>
>
> =========
>
>ref="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
>t
>
> =========
>
> ums.matronics.com">http://forums.matronics.com
>
> =========
>
> http://www.matronics.com/contribution">http://www.matronics.com/contribution
>
> =========
>
>
>href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
>t
>
> href="http://forums.matronics.com/">http://forums.matronics.com
>
>href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
>n
>
>
>href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List
>t
> href="http://forums.matronics.com">http://forums.matronics.com
> href="http://www.matronics.com/contribution">http://www.matronics.com/c
>
>
Message 19
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| Subject: | Re: Landing gear shake |
Mine measured at 8 11/32". Don't know if there is any slop in the rubber discs
yet.
Interesting it is over one 1" taller.
Scott Schmidt
________________________________
From: Jesse Saint <jesse@saintaviation.com>
Sent: Mon, February 7, 2011 10:47:58 AM
Subject: Re: RV10-List: Landing gear shake
The spacer came from Van's. It's part # U-1002 on page 46-07. I had someone
hold the tail down and then I lifted up on the nose gear to see if it was tight.
It moved, so I knew it needed another spacer. You can also tell if the bolt
holding the cap on can move freely when you loosen the nut. The distance from
the prop to the ground depends on how the engine hangs on the engine mounts and
other things, but I'll measure it...7.5".
Jesse Saint
Saint Aviation, Inc.
jesse@saintaviation.com
C: 352-427-0285
F: 815-377-3694
On Feb 7, 2011, at 12:16 PM, Scott Schmidt wrote:
Jesse, I really like what you tried and have thought about it. I never had a
shake until around 100 - 150 hours. If the front gear settles down slightly it
changes the toe-in.
>If it is still possible can you measure the distance between the prop and the
>ground?
>Where did you purchase the spacer?
>
> Scott Schmidt
>
>
________________________________
From: Jesse Saint <jesse@saintaviation.com>
>To: rv10-list@matronics.com
>Sent: Mon, February 7, 2011 8:59:26 AM
>Subject: Re: RV10-List: Landing gear shake
>
>I just did a condition inspection on N256H. Before the condition it had a fair
>bit of shimmy in the 25-30 mph range after landing. I added another spacer on
>the nose gear shock strut and tightened the nose gear pivot nut one flat. Most
>of the shimmy went away.
>
>
>Jesse Saint
>Saint Aviation, Inc.
>jesse@saintaviation.com
>C: 352-427-0285
>F: 815-377-3694
>
>On Feb 6, 2011, at 2:09 AM, Scott Schmidt wrote:
>
>I have posted on this topic before.
>>Mine does the exact same at the same speeds as does many other RV-10's.
>>Sometimes balancing the tire fixes/helps, sometimes different tires, pressures,
>>ect.
>>I have tried most with no success. I have talked with Van about it and he
>>indicated that his personal plane even did it. I have also heard that when
>>people installed the wheel pants it started. It all comes down to a poor gear
>>design. A round gear leg is not the optimal design for a landing gear but is
the
>>cheapest shape from a manufacturing point of view.
>>It is not the caliper either. Even if I slow down with no braking it occurs.
I
>>can replicate it on the ground with one wheel jacked up and use my buffer to
get
>>the wheel up to 50 mph and when it slows to around 25 mph, it shakes. It is the
>>system hitting a natural frequency.
>>Van said people have put a block of wood on the backside of other RV models to
>>stop it.
>>
>>
>>I spent a considerable amount of time re-drilling my gear legs to get the exact
>>toe-in on both sides and it did not change one thing. I have tried two different
>>sets of tires, pressures from 25-60 psi all with no luck. My next plan, when
I
>>get to it, is to install the wheel pant spacers from PlaneAround.com and start
>>stiffening the wheel pant to the gear. Then I will start finding a good way
>>change the moment of inertia of the gear leg, stiffening it in the front to back
>>direction.
>>I've been told by Vans not to worry about it. Just think of it as a massage with
>>every landing.
>>I will find a way to eliminate it though.
>>
>>
>>Let me know if you find anything out.
>>Thanks, Scott
>>
>>On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com> wrote:
>>
>>
>>
>>>Today I was able to have a guy observe the gear up close as I was landing.
>>>I have been feeling a shake during roll out below 30 mph. Sometimes not too
much
>>>but sometimes significant. Applying brakes seems to make it worse but
>>>nothing will make it stop until slowing below 20 mph. Speeds above 30 mph are
>>>smooth. He said that the left main was shaking and it looked to be rapidly
>>>moving forward and back.
>>>
>>>Are others noticing this shaking? Is there a fix or a way to minimize the
>>>shaking that anyone has discovered?
>>>
>>>Thank you,
>>>
>>>Roger Standley
>>>N291RV
>>>165 hours
>>>
>>> ==========
>>>ref="http://www.matronics.com/Navigator?RV10-List%22%3Ehttp://www.matronics.com/Navigator?RV10-List=========
>>> ums.matronics.com">http://forums.matronics.com/
>>>=========
>>>http://www.matronics.com/contribution%22%3Ehttp://www.matronics.com/contribution=========
>>>
>>>
>>>
>
>href="http://www.matronics.com/Navigator?RV10-List%22%3Ehttp://www.matronics.com/Navigator?RV10-Listhref=%22http://forums.matronics.com/%22%3Ehttp://forums.matronics.com
>href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
>n
>
>
>
>href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-Listhref="http://forums.matronics.com/">http://forums.matronics.com
>href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
>n
>
>
Message 20
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| Subject: | Re: Landing gear shake |
Not to be anal, but 8 11/32 - 7.5 (7 16/32) is not more than an inch,
but it's not important. It could really depend on how the plane is
sitting, loaded, fueled, etc.
do not archive
Jesse Saint
Saint Aviation, Inc.
jesse@saintaviation.com
C: 352-427-0285
F: 815-377-3694
On Feb 7, 2011, at 5:28 PM, Scott Schmidt wrote:
> Mine measured at 8 11/32". Don't know if there is any slop in the
rubber discs yet.
> Interesting it is over one 1" taller.
>
> Scott Schmidt
>
>
>
> From: Jesse Saint <jesse@saintaviation.com>
> To: rv10-list@matronics.com
> Sent: Mon, February 7, 2011 10:47:58 AM
> Subject: Re: RV10-List: Landing gear shake
>
> The spacer came from Van's. It's part # U-1002 on page 46-07. I had
someone hold the tail down and then I lifted up on the nose gear to see
if it was tight. It moved, so I knew it needed another spacer. You can
also tell if the bolt holding the cap on can move freely when you loosen
the nut. The distance from the prop to the ground depends on how the
engine hangs on the engine mounts and other things, but I'll measure
it...7.5".
>
> Jesse Saint
> Saint Aviation, Inc.
> jesse@saintaviation.com
> C: 352-427-0285
> F: 815-377-3694
>
> On Feb 7, 2011, at 12:16 PM, Scott Schmidt wrote:
>
>> Jesse, I really like what you tried and have thought about it. I
never had a shake until around 100 - 150 hours. If the front gear
settles down slightly it changes the toe-in.
>> If it is still possible can you measure the distance between the prop
and the ground?
>> Where did you purchase the spacer?
>>
>> Scott Schmidt
>>
>>
>>
>> From: Jesse Saint <jesse@saintaviation.com>
>> To: rv10-list@matronics.com
>> Sent: Mon, February 7, 2011 8:59:26 AM
>> Subject: Re: RV10-List: Landing gear shake
>>
>> I just did a condition inspection on N256H. Before the condition it
had a fair bit of shimmy in the 25-30 mph range after landing. I added
another spacer on the nose gear shock strut and tightened the nose gear
pivot nut one flat. Most of the shimmy went away.
>>
>> Jesse Saint
>> Saint Aviation, Inc.
>> jesse@saintaviation.com
>> C: 352-427-0285
>> F: 815-377-3694
>>
>> On Feb 6, 2011, at 2:09 AM, Scott Schmidt wrote:
>>
>>> I have posted on this topic before.
>>> Mine does the exact same at the same speeds as does many other
RV-10's.
>>> Sometimes balancing the tire fixes/helps, sometimes different tires,
pressures, ect.
>>> I have tried most with no success. I have talked with Van about it
and he indicated that his personal plane even did it. I have also heard
that when people installed the wheel pants it started. It all comes down
to a poor gear design. A round gear leg is not the optimal design for a
landing gear but is the cheapest shape from a manufacturing point of
view.
>>> It is not the caliper either. Even if I slow down with no braking it
occurs. I can replicate it on the ground with one wheel jacked up and
use my buffer to get the wheel up to 50 mph and when it slows to around
25 mph, it shakes. It is the system hitting a natural frequency.
>>> Van said people have put a block of wood on the backside of other RV
models to stop it.
>>>
>>> I spent a considerable amount of time re-drilling my gear legs to
get the exact toe-in on both sides and it did not change one thing. I
have tried two different sets of tires, pressures from 25-60 psi all
with no luck. My next plan, when I get to it, is to install the wheel
pant spacers from PlaneAround.com and start stiffening the wheel pant to
the gear. Then I will start finding a good way change the moment of
inertia of the gear leg, stiffening it in the front to back direction.
>>> I've been told by Vans not to worry about it. Just think of it as a
massage with every landing.
>>> I will find a way to eliminate it though.
>>>
>>> Let me know if you find anything out.
>>> Thanks, Scott
>>>
>>> On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com>
wrote:
>>>
>>>>
>>>> Today I was able to have a guy observe the gear up close as I was
landing. I have been feeling a shake during roll out below 30 mph.
Sometimes not too much but sometimes significant. Applying brakes seems
to make it worse but nothing will make it stop until slowing below 20
mph. Speeds above 30 mph are smooth. He said that the left main was
shaking and it looked to be rapidly moving forward and back.
>>>> Are others noticing this shaking? Is there a fix or a way to
minimize the shaking that anyone has discovered?
>>>>
>>>> Thank you,
>>>>
>>>> Roger Standley
>>>> N291RV
>>>> 165 hours
>>>>
>>>>
>>>> =========
>>>>
ref="http://www.matronics.com/Navigator?RV10-List%22%3Ehttp://www.matron
ics.com/Navigator?RV10-List=========
>>>> ums.matronics.com">http://forums.matronics.com/
>>>> =========
>>>>
http://www.matronics.com/contribution%22%3Ehttp://www.matronics.com/contri
bution=========
>>>>
>>>
>>>
>>>
href="http://www.matronics.com/Navigator?RV10-List%22%3Ehttp://www.matro
nics.com/Navigator?RV10-Listhref=%22http://forums.matronics.com/%22%3Eht
tp://forums.matronics.com
>>>
href="http://www.matronics.com/contribution">http://www.matronics.com/co
ntribution
>>>
>>
>>
>>
>>
>>
>>
>>
href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics
.com/Navigator?RV10-Listhref="http://forums.matronics.com/">http://forum
s.matronics.com
>>
href="http://www.matronics.com/contribution">http://www.matronics.com/co
ntribution
>>
>>
>
>
>
>
>
>
>
>
Message 21
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| Subject: | Re: No longer a project |
Jesse, it only really continues to be a project because we want it to!-
- =0ACongrats Eric, and welcome to the family.=0ADon McDonald=0A=0A=0A=0A
=0A________________________________=0AFrom: Jesse Saint <jesse@saintaviatio
n.com>=0ATo: rv10-list@matronics.com=0ASent: Mon, February 7, 2011 4:19:52
PM=0ASubject: Re: RV10-List: No longer a project=0A=0A--> RV10-List message
posted by: Jesse Saint <jesse@saintaviation.com>=0A=0A"I guess it is no lo
nger a project"?- Who have you been talking to?- It'll =0Aalways be a p
roject!!!- CONGRATS!=0A=0AJesse Saint=0ASaint Aviation, Inc.=0Ajesse@sain
taviation.com=0AC: 352-427-0285=0AF: 815-377-3694=0A=0AOn Feb 7, 2011, at 4
llio" <scout019@msn.com>=0A> =0A> DAR stopped by yesterday afternoon. He ha
d already inspected it apart and =0A>wanted it all together. He took a look
at it, watched me run it and taxi it =0A>around the airfield. Satisfied, a
nd after 45 minutes of paperwork he handed me =0A>the airworthiness certifi
cate. I guess it is no longer a project. Now it is an =0A>airplane. It was
too late in the day to fly, sun was going down. Weather today =0A>was absol
ute garbage. Maybe first flight next Saturday, just waiting on weather. =0A
>Already starting to get the grin and haven't even flown it yet.=0A> =0A> E
ric=0A> N518RV=0A> =0A> =0A> =0A> =0A> Read this topic online here:=0A> =0A
> http://forums.matronics.com/viewtopic.php?p=330043#330043=0A> =0A> =0A>
====0A=0A=0A
Message 22
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| Subject: | Landing gear shake |
We balanced all three wheel pants before flying (photos attached).
Somewhat typical for RV's as long as you don't want to make the lightest
RV you can. It sure hurts to add weight without adding function. That
being said I also had a worse than average nose wheel shimmy for some
time. I tried balancing the wheels and adjusting the castle nut on the
nose gear many times to try & reduce the shimmy. I was able to narrow the
speed range but not eliminate it all together. Then we lifted the nose and
felt some significant movement of the nose gear. After further
investigation we found a loose busing as detailed in this extremely
exciting video staring my hand:
http://www.youtube.com/watch?v=EmT38rDenwA
Once I replaced the bushing (with a custom bushing) the shimmy was
completely eliminated and I have not thought about shimmy in the ~200
landing since the correction. I think the shimmy was gone because we had
already optimized the other components (castle nut, balanced wheels,
balanced wheel pants etc...)
Robin
Message 23
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| Subject: | Re: Crow Harnesses |
Rob;
Attached is the US Transportation AC21-34, a take on the GA safety belt restraint
systems.
Conrad B.
--------
Conrad Booze
Sr. Engineer
P. O. Box 7028
Warner Robins, GA. 31095
(478)-335-4264
conradbooze@cox.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=330057#330057
Attachments:
http://forums.matronics.com//files/aircraft_seat_belts__ac21_341_176.pdf
Message 24
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| Subject: | Re: No longer a project |
Exactly right, but it does continue to be.
Do not archive
Jesse Saint
I-TEC, Inc.
jesse@itecusa.org
www.itecusa.org
www.mavericklsa.com
C: 352-427-0285
O: 352-465-4545
F: 815-377-3694
Sent from my iPhone
On Feb 7, 2011, at 6:03 PM, Don McDonald <building_partner@yahoo.com> wrote:
> Jesse, it only really continues to be a project because we want it to! C
ongrats Eric, and welcome to the family.
> Don McDonald
>
> From: Jesse Saint <jesse@saintaviation.com>
> To: rv10-list@matronics.com
> Sent: Mon, February 7, 2011 4:19:52 PM
> Subject: Re: RV10-List: No longer a project
>
>
> "I guess it is no longer a project"? Who have you been talking to? It'll
always be a project!!! CONGRATS!
>
> Jesse Saint
> Saint Aviation, Inc.
> jesse@saintaviation.com
> C: 352-427-0285
> F: 815-377-3694
>
> On Feb 7, 2011, at 4:46 PM, Eric_Kallio wrote:
>
> >
> > DAR stopped by yesterday afternoon. He had already inspected it apart an
d wanted it all together. He took a look at it, watched me run it and taxi i
t around the airfield. Satisfied, and after 45 minutes of paperwork he hande
d me the airworthiness certificate. I guess it is no longer a project. Now i
t is an airplane. It was too late in the day to fly, sun was going down. Wea
ther today was absolute garbage. Maybe first flight next Saturday, just wait
ing on weather. Already starting to get the grin and haven't even flown it y
et.
> >
> > Eric
> > N518RV
> >
> >
> >
> >
> > Read this topic online here:
> >
> > http://forums.matronics.com/viewtopic.php?p=330043#330043
> >
> >
> >
> > ="http://www.matronics.com/Navigator?RV10-List" target=_blank>http:/
/ww" nbsp; -->
>
>
>
>
>
==========================
=========
==========================
=========
==========================
=========
==========================
=========
>
Message 25
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| Subject: | Re: Crow Harnesses |
The option I used.
www.inertialbelts.com
I could supply some installed pictures if needed. Contact me offlist.
----- Original Message -----
From: "conradb" <conradbooze@cox.net>
Sent: Monday, February 07, 2011 4:38 PM
Subject: RV10-List: Re: Crow Harnesses
>
> Rob;
>
> Attached is the US Transportation AC21-34, a take on the GA safety belt
> restraint systems.
>
>
> Conrad B.
>
> --------
> Conrad Booze
> Sr. Engineer
> P. O. Box 7028
> Warner Robins, GA. 31095
> (478)-335-4264
> conradbooze@cox.net
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=330057#330057
>
>
> Attachments:
>
> http://forums.matronics.com//files/aircraft_seat_belts__ac21_341_176.pdf
>
>
>
Message 26
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| Subject: | Re: Crow Harnesses |
Thanks, guys... I'm having second thoughts with my "good enough" assessment
from the other day. The belts feel fine, but it seems like the geometry is
off, with the shoulder straps essentially coming from the top-center of the
headrest. I think I'm going to call and have them re-make the front seat
shoulder straps. There's also *way* too much extra strap (around 3 feet)
when I have them adjusted, so something is clearly not right. Maybe when I
said "RV-10" they assumed all RVs are the same? Not really sure what's
going on, but this is something that needs to be done right.
DAR inspection in 13 days. Not exactly what I want to be messing with
now...
-Rob
On Mon, Feb 7, 2011 at 5:34 PM, DLM <dlm34077@q.com> wrote:
>
> The option I used.
>
> www.inertialbelts.com
>
> I could supply some installed pictures if needed. Contact me offlist.
>
> ----- Original Message ----- From: "conradb" <conradbooze@cox.net>
> To: <rv10-list@matronics.com>
> Sent: Monday, February 07, 2011 4:38 PM
> Subject: RV10-List: Re: Crow Harnesses
>
>
>>
>> Rob;
>>
>> Attached is the US Transportation AC21-34, a take on the GA safety belt
>> restraint systems.
>>
>>
>> Conrad B.
>>
>> --------
>> Conrad Booze
>> Sr. Engineer
>> P. O. Box 7028
>> Warner Robins, GA. 31095
>> (478)-335-4264
>> conradbooze@cox.net
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=330057#330057
>>
>>
>>
>>
>> Attachments:
>>
>> http://forums.matronics.com//files/aircraft_seat_belts__ac21_341_176.pdf
>>
>>
>>
>>
>>
>>
>>
>>
>
>
--
Rob Kochman
RV-10 "Finishing" Kit
Woodinville, WA (near Seattle)
http://kochman.net/N819K
Message 27
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| Subject: | Re: Landing gear shake |
Robin, that's one nice hand..... Do you use palmolive or or something
similar? Very impressive. :)
I'm at that phase of the project right now and getting ready to put it up on
the gear on the 26th when I have some help coming to town. It doesn't look
like yours were worn it looks like that's the factory fit. Mine are new and
have equal play.
Message 28
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| Subject: | Van's stuffin advertisements in shipments |
I received the back order items off my FWF kit order today. I was surprised
to find in the box with the Vetterman exhaust, an advertisement for G3i
Ignitions and Flight Data Systems. I just thought it atypical of Van's
pushing a specific product other than their own.
Bob
Message 29
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| Subject: | Re: Van's stuffin advertisements in shipments |
Yeah, I had that in my exhaust kit as well. I think it is Vetterman
putting those in there, not Vans.
On Mon, Feb 7, 2011 at 7:41 PM, Bob Leffler <rv@thelefflers.com> wrote:
> I received the back order items off my FWF kit order today. I was surprised
> to find in the box with the Vetterman exhaust, an advertisement for G3i
> Ignitions and Flight Data Systems. I just thought it atypical of Vans
> pushing a specific product other than their own.
>
>
> Bob
>
>
Message 30
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| Subject: | Re: Crow Harnesses |
Let us know what they say. Ordering the same harnesses is near the top
of my todo list.
Jae
40533
On 2/7/2011 6:01 PM, Rob Kochman wrote:
> Thanks, guys... I'm having second thoughts with my "good enough"
> assessment from the other day. The belts feel fine, but it seems like
> the geometry is off, with the shoulder straps essentially coming from
> the top-center of the headrest. I think I'm going to call and have
> them re-make the front seat shoulder straps. There's also *way* too
> much extra strap (around 3 feet) when I have them adjusted, so
> something is clearly not right. Maybe when I said "RV-10" they
> assumed all RVs are the same? Not really sure what's going on, but
> this is something that needs to be done right.
> DAR inspection in 13 days. Not exactly what I want to be messing with
> now...
> -Rob
>
Message 31
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| Subject: | Re: Landing gear shake |
Yup, just chalk that up to a long day. I switched a couple of numbers around in
my head.
Scott Schmidt
________________________________
From: Jesse Saint <jesse@saintaviation.com>
Sent: Mon, February 7, 2011 3:46:03 PM
Subject: Re: RV10-List: Landing gear shake
Not to be anal, but 8 11/32 - 7.5 (7 16/32) is not more than an inch, but it's
not important. It could really depend on how the plane is sitting, loaded,
fueled, etc.
do not archive
Jesse Saint
Saint Aviation, Inc.
jesse@saintaviation.com
C: 352-427-0285
F: 815-377-3694
On Feb 7, 2011, at 5:28 PM, Scott Schmidt wrote:
Mine measured at 8 11/32". Don't know if there is any slop in the rubber discs
yet.
>Interesting it is over one 1" taller.
>
> Scott Schmidt
>
>
________________________________
From: Jesse Saint <jesse@saintaviation.com>
>To: rv10-list@matronics.com
>Sent: Mon, February 7, 2011 10:47:58 AM
>Subject: Re: RV10-List: Landing gear shake
>
>The spacer came from Van's. It's part # U-1002 on page 46-07. I had someone
>hold the tail down and then I lifted up on the nose gear to see if it was tight.
> It moved, so I knew it needed another spacer. You can also tell if the bolt
>holding the cap on can move freely when you loosen the nut. The distance from
>the prop to the ground depends on how the engine hangs on the engine mounts and
>other things, but I'll measure it...7.5".
>
>
>Jesse Saint
>Saint Aviation, Inc.
>jesse@saintaviation.com
>C: 352-427-0285
>F: 815-377-3694
>
>On Feb 7, 2011, at 12:16 PM, Scott Schmidt wrote:
>
>Jesse, I really like what you tried and have thought about it. I never had a
>shake until around 100 - 150 hours. If the front gear settles down slightly it
>changes the toe-in.
>>If it is still possible can you measure the distance between the prop and the
>>ground?
>>Where did you purchase the spacer?
>>
>> Scott Schmidt
>>
>>
>>
>>
>>
>>
>>
________________________________
From: Jesse Saint <jesse@saintaviation.com>
>>To: rv10-list@matronics.com
>>Sent: Mon, February 7, 2011 8:59:26 AM
>>Subject: Re: RV10-List: Landing gear shake
>>
>>I just did a condition inspection on N256H. Before the condition it had a fair
>>bit of shimmy in the 25-30 mph range after landing. I added another spacer on
>>the nose gear shock strut and tightened the nose gear pivot nut one flat. Most
>>of the shimmy went away.
>>
>>
>>Jesse Saint
>>Saint Aviation, Inc.
>>jesse@saintaviation.com
>>C: 352-427-0285
>>F: 815-377-3694
>>
>>On Feb 6, 2011, at 2:09 AM, Scott Schmidt wrote:
>>
>>I have posted on this topic before.
>>>Mine does the exact same at the same speeds as does many other RV-10's.
>>>Sometimes balancing the tire fixes/helps, sometimes different tires, pressures,
>>>ect.
>>>I have tried most with no success. I have talked with Van about it and he
>>>indicated that his personal plane even did it. I have also heard that when
>>>people installed the wheel pants it started. It all comes down to a poor gear
>>>design. A round gear leg is not the optimal design for a landing gear but is
the
>>>cheapest shape from a manufacturing point of view.
>>>It is not the caliper either. Even if I slow down with no braking it occurs.
I
>>>can replicate it on the ground with one wheel jacked up and use my buffer to
get
>>>the wheel up to 50 mph and when it slows to around 25 mph, it shakes. It is
the
>>>system hitting a natural frequency.
>>>Van said people have put a block of wood on the backside of other RV models
to
>>>stop it.
>>>
>>>
>>>I spent a considerable amount of time re-drilling my gear legs to get the exact
>>>toe-in on both sides and it did not change one thing. I have tried two different
>>>sets of tires, pressures from 25-60 psi all with no luck. My next plan, when
I
>>>get to it, is to install the wheel pant spacers from PlaneAround.com and start
>>>stiffening the wheel pant to the gear. Then I will start finding a good way
>>>change the moment of inertia of the gear leg, stiffening it in the front to
back
>>>direction.
>>>I've been told by Vans not to worry about it. Just think of it as a massage
with
>>>every landing.
>>>I will find a way to eliminate it though.
>>>
>>>
>>>Let me know if you find anything out.
>>>Thanks, Scott
>>>
>>>On Jan 23, 2011, at 6:40 PM, "Roger Standley" <taildragon@msn.com> wrote:
>>>
>>>
>>>
>>>>Today I was able to have a guy observe the gear up close as I was landing.
>>>>I have been feeling a shake during roll out below 30 mph. Sometimes not too
much
>>>>but sometimes significant. Applying brakes seems to make it worse but
>>>>nothing will make it stop until slowing below 20 mph. Speeds above 30 mph are
>>>>smooth. He said that the left main was shaking and it looked to be rapidly
>>>>moving forward and back.
>>>>
>>>>Are others noticing this shaking? Is there a fix or a way to minimize the
>>>>shaking that anyone has discovered?
>>>>
>>>>Thank you,
>>>>
>>>>Roger Standley
>>>>N291RV
>>>>165 hours
>>>>
>>>> ==========
>>>>ref="http://www.matronics.com/Navigator?RV10-List%22%3Ehttp://www.matronics.com/Navigator?RV10-List=========
>>>> ums.matronics.com">http://forums.matronics.com/
>>>>=========
>>>>http://www.matronics.com/contribution%22%3Ehttp://www.matronics.com/contribution=========
>>>>
>>>>
>>>>
>>
>>href="http://www.matronics.com/Navigator?RV10-List%22%3Ehttp://www.matronics.com/Navigator?RV10-Listhref=%22http://forums.matronics.com/%22%3Ehttp://forums.matronics.com
>>href="http://www.matronics.com/contribution%22%3Ehttp://www.matronics.com/contribution
>>n
>>
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>>href="http://www.matronics.com/contribution">http://www.matronics.com/contribution
>>n
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