REFLECTOR: Nosewheel shimmy

[Hiroo Umeno]

The thing about the gyro idea, though, the shimmy only happens when the
wheel is spinning, right?  Why wouldn't the wheel itself act as a gyro
and self-dampen the inclination to caster?

Something I am not clear on, as someone who hasn't taxied his plane...

The Belleville Washer somewhat works as long as you keep it torqued to
factory specifications, right?  Once it is torqued to spec, how often
does it need to be re-torqued?  I have a fixed gear with wheel pants.
In order to re-torque or check the washers, the pants needs to come off.
Clearly, this is not an item for every pre-flight.  Clearly, it will be
a part of my annual condition inspection.  But that seems pretty
infrequent if this is something that loosens up readily.

So, how often do y'all check and torque these little thingmabobs?

Hiroo 

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Douglas Holub
Sent: Wednesday, June 28, 2006 7:49 PM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: Nosewheel shimmy

I don't know how practical it is either, but you definitely get points
for creative thinking.

Doug Holub
----- Original Message -----
From: "Dave Philipsen" <velocity at davebiz.com>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Wednesday, June 28, 2006 9:34 PM
Subject: Re: REFLECTOR: Nosewheel shimmy


Here is another idea (perhaps it's a little outrageous). How about
putting a gyro on the landing gear? Wouldn't that effectively resist any
forces causing shimmy? I don't know. It may not be very practical as far
as size goes.


Al Gietzen wrote:
>
> Has anyone tried a flatter profile tire such as the Goodyear? The
> Condors are quite round. The greater rubber in contact with the ground
> might help keep the tire aligned with the onrushing pavement. Only had
> one shimmy but keep my Bellvilles very tight.
>
> Just a thought..
>
> Rene'
>
> Rene'
>
> The SE comes with a squared profile tire. Some years ago another
> Velocity driver told me that he solved the shimmy problem by changing
> to a rounded profile tire. Apparently it can happen with either.
>
> Al
>
>
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-- 
Dave Philipsen
STDFG
N171SP

soon-to-be N83DP

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