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Re: Please Rate Your Mods on a Slow Sunday
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Posted by Dean (more from Dean) on Sun, 18 Apr 2004 09:21:30 Share Post by Email
In Reply to: Please Rate Your Mods on a Slow Sunday, RagTop Tiger, Sun, 18 Apr 2004 05:24:01
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Support Arm Bearing Kit? -see pix

They will eliminate support arm movement relative to the chassis, but they cannot eliminate control arm for-aft deflection as the large poly bushing that connects the control arm to the support arm will deflect.

The text on the Abbott site is misleading!

If you make this change, you do not know if that bushing, or the larger one, is contributing the largest amount of steering geometry distortion.

What changes did you notice with the rear axle bushings? Or were the front and rear modified at the same time.

The rear shock tower brace will not reduce mid-body fore-aft twist. It will reduce (but not elimiate) the shear distortion of the rear body where one tower wants to be higher than the other. The body is already quite stiff in that mod. Such distortion will occur when the rear axle loads are not symetrical. Your heavy rear sway bar and rear poly bushings greatly siffen the rear axle beam which greatly reduces asymetric loads. In a heavy turn, if the rear and front axles wanted to allow the same about of body roll, there will be no fore-aft body twisting forces. The benefit would be more apparent on uneven road surfaces.

Any deflection of the tops of the shock towers does not have any direct effect on the rear axle 'steering' geometry as the top of the shock only would be moving. (not a strut)

The only loads through the top of the shock towers are the dynamic shock loads. The rear axle spring loads are applied elsewhere to the body. Abbott calls it a "Rear Strut/Body Brace". These vehicles do not have a rear strut. In a heavy turn on a smooth road, with body roll established, there will be zero loads from the shocks on the towers.

A rear chassis brace would have greater benefit, and work to do, on a vehicle with a soft rear sway bar and soft rubber rear axle bushings (stock). Stiff shocks on a stock axle setup would give the brace a greater amount of work to do.







posted by 68.95.118...

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