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Need Spring Loaded 3rd Link help

 
circleracer18 circleracer18
I watched NASCAR once | Posts: 1 | Joined: 07/08
Posted: 07/29/08
04:10 PM

I installed a 1600 lb 3rd link on my asphalt late model to try and get some more bite. The problem i have now is that when i get off the gas and on the brakes I am loose and the rt. front bottoms out on the sway bar adjuster. I have no room for a 90/10 shock without doing a great deal of fab work.
Looking for other suggestions to make this 3rd link work. The spring is moving about 7/8" The track is 1/4 mile flat
cross- 56.8-with sway bar-57.8
left- 58.1
rear- 50.6
total- 2540
rt.rear trailing arm is mounted about 1" above the left on the rear end and has 3.3 degrees angle
left rear has 1.3 degrees angle
3rd link has 8.4 degrees
panhard bar is 9-3/8"rearend and 10-7/8 chassis
pinion angle 6 degrees
LF spring-275-shock-6
RF spring-300-shock-6-3
LR-spring-200-shock-4
RR-spring-150-shock-4
ride height-4"

Any help would be appreciated.
Thanks
Rod  

 
bspike40 bspike40
I watched NASCAR once | Posts: 10 | Joined: 03/08
Posted: 08/17/08
06:09 PM

Based on the info here you have rear steer in the car. This will make it loose everywhere. Also what angle is the top link at?? Based on your numbers a high cross weight needs more stagger  to make it turn. However with the amount of rear steer you have it would make it excessively loose. I would try less cross weight somewhere around 50.0 49.0. Level your rear arms to remove the rear steer and try around 14.5 degrees of third link angle. Also your pinion should be around 3.0 degrees with the 14.5 degree angle on the third link. You can also offset the top link to the left to put more load on the lr. Remember make all these changes and measurements with the drivers weight in the seat and the fuel load you run on track as well as race air pressures!!!! If you need
more info email me directly at brilyn31@yahoo.com. I also have a web site www.rossautoracing.com Hopefully this helps. Brian Ross