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Re: Torque Arm

To: Bob Palmer <rpalmer@ames.ucsd.edu>, brockctella@juno.com (Brock C Tella)
Subject: Re: Torque Arm
From: richards@northcoast.com
Date: Thu, 13 Nov 1997 22:19:32 -0800
I took some interesting shots of the LeMans Tigers at United and hope to 
recreate a little bit milder version for my current project...if I can just 
decide which cam I should run......I guess we all have our hurdles to jump 
(hopfully (sic) not with our rears).

Regards-Chris

On Thu, 13 Nov 1997, Bob Palmer <rpalmer@ames.ucsd.edu> wrote:
>Brock, Bill, et al.,
>
>I also had the Dan Walters torque arm on my Tiger for awhile and have since
>taken it off for reasons I think I posted here a few months back.  While I
>think it works well enough, I don't think it is the optimum solution for a
>number of reasons.  First, and fundamentally, everything the torque arm
>does that's right during acceleration turns out to be just wrong during
>braking; i.e., putting extra weight on the front axle.  Also, Dan's arm may
>interfere with the tunnel if you have a lowered ride height.  At one time I
>had weld-on traction bars and with a sticky set of tires was able to get
>incredibly solid launch with them.  Trouble is, I went to solid leaf spring
>bushings and began having a very serious interference problem.  This is
>because the torque arm and the leaf spring are trying to move the axle
>around different radii and something has to give.  This problem is
>minimized by having the two radii tangent at the normal ride height which
>more-or-less means having the traction bar level with the ground, which
>mine weren't.  This conflict between the springs and the traction bars is
>eliminated by the bolt-on style bars.  I think this is what I personally
>would like to try next and Larry Atkisson looks like he has done a very
>nice job of reproducing this type of bar at a very reasonable price.
>Neither the weld-on or bolt-on bars will transfer as much weight to the
>back axle as the torque arm which is a disadvantage for drag racing.
>However, under braking the car will also not nose down with traction bars,
>which is good for track racing as well as general street use.
>
>Doane Spencer had a setup on the #55 car that evidently worked very well,
>and as far as I can determine was a half spring that went forward from the
>axle.  Does anyone know of a picture or better description of the setup on
>the #55 car?
>
>Bob
>
>At 09:57 AM 11/13/97 -0800, you wrote:
>>The torque arm made by Dan Walters works great
>>On Wed, 12 Nov 1997 15:48:40 -0800 Bill Gegg <billgegg@ci.antioch.ca.us>
>>writes:
>>>My Tiger has a set of weld-on traction bars and the connection at the 
>>>=
>>>frame is a single shear connection.  This led me to wondering about =
>>>traction bars that bolt on the springs.  Has anyone had any experience 
>>>=
>>>with the bolt on type and where can they be purchased?  Or is there a 
>>>=
>>>better way to reduce axle tramp?
>>>
>>>
>>
>>
>Bob Palmer
>UCSD, AMES Dept.
>rpalmer@ames.ucsd.edu
>
>
>

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