REFLECTOR: Main LG vibration on braking ...

[Ron Brown]

This was discussed some time ago.  It seems the FG's don't have a problem, 
but many of the RG's do.  Someone suggested tightening the main gear pivot 
bolts will reduce/eliminate this.  I have tightened mine as much as I want 
without putting undue friction on the system.  I'd rather have the gear 
falling freely and put up with some shake.

The bearing areas for the main gear bushings isn't very wide when tightening 
the main gear bolts down.  Someone did add some additional surface area or 
perhaps bearings to allow tightening down more.

Ronnie Brown
173 Elite RG

----- Original Message ----- 
From: "AnnSam" <annsam1 at earthlink.net>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Tuesday, February 01, 2005 4:24 PM
Subject: RE: REFLECTOR: Main LG vibration on braking ...


>I have an early model FG with over 700 hrs on it. Never experienced what 
>you
> described
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On
> Behalf Of Jim Sower
> Sent: Tuesday, February 01, 2005 12:54 PM
> To: Fly Rotary; Velocity Builders list
> Subject: REFLECTOR: Main LG vibration on braking ...
>
>
> All,
> There is a pretty extended discussion on the Cozy list about Main Gear
> vibration.  Seems as if the gear legs start vibrating / oscillating
> during braking from about 45 kts down to 30 kts or thereabouts.  If you
> let off the brakes at 45, coast down to 30 and re-apply the brakes there
> is no vibration.
>
> I was wondering if this might be a known  / well known / common
> phenomenon in the Velocity / RV communities.  Seems as if it's fairly
> common in all of the direct derivatives of Rutan airplanes (EZ, Cozy,
> Defiant).
>
> Inquiring minds need to know ... Jim S.
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