REFLECTOR: Shimmy and Nose Gear Pivot Bushings

[Wayne]

Mine is an old top loader FG. I have a large piece of aluminum channel  that 
supports the "ears" on the gear leg. I made a new one with relocated holes 
for the "ears". Some one at the factory disagreed with me about my approach 
(something about gyroscopic forces) but for me it works fine. Now I don't 
have to have a nearly untenable nose gear.
----- Original Message ----- 
From: "John Dibble" <aminetech at bluefrog.com>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Tuesday, November 15, 2005 8:17 PM
Subject: Re: REFLECTOR: Shimmy and Nose Gear Pivot Bushings


> How did you change the caster angle?
>
> John
>
> Wayne wrote:
>
>> I molded a large bowl of lead into the front of my nosewheel pant/.It
>> changed the shimmy from high frequency to a very low frequency.
>> Revising the caster angle on my nose gear finally fixed the shimmy 
>> tendency.
>> It shimmied more often when the front was heavily loaded.  I changed the
>> caster angle so with two large folks up front  the caster was near zero 
>> and
>> slightly negative when  lightly loaded.
>> At the same time I installed a nose wheel lock  but have never needed it.
>> Wayne
>> -
>
>
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