Re: Traction bars
Grump experimented with some different stuff. The bars with the clamp on the rear half of the spring were designed to stop the car from lifting too high in the rear,and promote the front end being pulled upward. The bars that went all the way to the back and had wheels on them were designed to work as wheelie bars that stopped the rear from lifting too far while not lifting the front end. Years later,fastest street car shootout racers used wheelie bars that mounted to the chassis on a pivot and pushed down on the rear axle for the same reason. I dont know the specs on the Grump bars,but I know his shop spawned off SRD race cars,so they were probably custom modified in house. I am thinking that you could make a set and be pretty close. I had a very old set of bars that were made with big square tube instead of rectanglular,and ended at the axle and the spring eye. I think the Grump bars were made of this type of tubing(maybe 3x3)
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