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Re: Shimmy

To: Anita & Jim Barrett <anitabrt@mindspring.com>, tigers@Autox.Team.Net
Subject: Re: Shimmy
From: richards@northcoast.com
Date: Mon, 14 Jul 1997 22:43:19 -0700
Jim and others-Set up an dial indicator and check the disc again.  Re-install 
the rim (even torque on each lug) and check again.  Do you feel the shimmy in 
the brake pedal as well as the steering wheel?  Check the caliper alignment mon 
both sides.  Trully I would look at the problem in the brakes.

Regards-The Happy Mechanic

On Mon, 14 Jul 1997, Anita & Jim Barrett <anitabrt@mindspring.com> wrote:
>Tiger People,
>        My Tiger has developed a shimmy in the front end when I
>apply the brakes fairly firmly.   The steering wheel rotates  rapidly
>from side to side about 1 to 2 inches under this condition.
> I have done the following and nothing works so far:
>Changed tires and wheels.
>Checked and rechecked the nuts securing the wheels.
>Changed the upper A arm bushings.
>Re- aligned the front end.
>Checked upper and lower ball joints.
>Checked for slop in front suspension and found nothing
>(almost no tire movement when I attempt to shake the tire
>while the tire is off the ground.)
>Checked the slop in the rack and tie rod ends.
>(no abnormal movement noted)
>Spun the hubs with wheels off and no indication of
>warped disks.
>Replaced the Disk Pads.
>Checked the mounting of front cross member.
>( still welded solid in addition to the four bolts. )
>Checked the shocks, still fairly stiff.
>Disks appear to be smooth except for the outer
>1/4" which is and always has been rough and rusted.
>(I have had this condition on my Tiger for a long time.)
>I even changed the disks once or twice and apparently
>the disk pads do not meet the outer edge of the disk
>and therefore they rust.
>Very little backlash in steering wheel turn to wheel 
>Upper brackets supporting A arm appear to be welded
>solid with no movement.
>Under non braking  conditions the Tiger does not
>shimmy  and it tracks streight down the road.
> On smooth streets under fairly firm braking the Tiger stops
>streight with  hands off tests, but has shimmy.
>On rough streets under fairly firm braking the Tiger seems
>to pull a little to one side or the other, not consistent in
>direction and has shimmy.
>Any one have an idea?
>Jim Barrett Tiger II 351C and others

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