REFLECTOR:Nose Wheel Shimmy Brake Problem

[Wayne Owens]

That used to cause it on my Grumman.
Wayne
----- Original Message ----- 
From: "Tom Martino" <tmartino@troubleshooter.com>
To: <reflector@tvbf.org>
Sent: Thursday, June 12, 2003 5:08 PM
Subject: RE: REFLECTOR:Nose Wheel Shimmy Brake Problem


> I have found that on some nose wheels (not just Velocities) the act of
applying brakes flexed the strut enough to change the angle of the trailing
fork.  That tiny difference can sometimes cause a shimmy.
>
> -----Original Message-----
> From: Don19dw@aol.com [mailto:Don19dw@aol.com]
> Sent: Thursday, June 12, 2003 2:57 PM
> To: reflector@awpi.com
> Subject: REFLECTOR:Nose Wheel Shimmy Brake Problem
>
>
> Have not been able to solve the following problem: when braking to a stop
or
> to turn off runway, get nose wheel shimmy, at low speed, 20 to 30 mph. The
> harder the braking the worse the shimmy, and it ceases shortly after
brakes are
> released. Have installed latest Matco brake discs and pads. Discs look
smooth
> and OK and are properly aligned. Checked nose wheel OK for balance and not
out
> of round. Also have extra tight shimmy damp torque of maybe 30 to 40# of
force
> to move tire sideways. Talked to both Matco and Velocity and tried their
> suggestions.  Only condition I find unusual is nose gear strut is about 7
degrees
> forward at bottom end and factory says 2 degrees is normal.
> Any ideas?????  Did Chris Martin have this problem???
> Don White     N19DW    XL/RG
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