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Old 22-08-2009
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bender bender is offline
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Join Date: Apr 2006
Location: Brisbane, Australia
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Quote:
Originally Posted by discostu View Post
i see you have done the short wheel base mod i can tell by the drive shaft angle to be fair im not conviced on this i think the by swapping the hangers around aswell and cutting the rear bumper it keeps the wheel base the same as standard but the added advantage of getting more weight over the rear of the car.

stu
After trying the swb mod a few weeks ago my car was better, but I was convinced it was mainly due to the driveshaft sweep and not the placement of the shocks.

I calculated the weight % and distance when the shocks were at the back and the value was relatively small, so I didn't think it would make much of a difference.

Last raceday I modified the arms so that the driveshaft sweep was the same as the swb mod, but the shocks were back on the front of the arm, and I expected the car to perform similar to the previous meeting.

In the end, the car was terrible, and I had a lot of trouble trying to get grip. I ended up running almost 4 degrees of toe-in at the back, which combined with the driveshaft sweep, made the car handle very badly. This was very surprising as I didn't think the location of the shocks was that important.

For tomorrows meeting I have made further changes, reversing the suspension mounts as posted above (the Chris Long method).
You end up with a slightly shorter wheelbase than std, plus only a little more driveshaft sweep, and of course the shocks are at the back of the car, but doing it this way also means all the arms and suspension mounts are further back too, which adds to the weight at the back.
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