Instant center

[XTEN]

:help:We have a launch problem,and think it might be in the front of the 4 link bars,instant center being too far back and down.Top bar is as high as it can go for now and is in a fixed location.It can be raised by modifying the floor (up) and making new brackets.We know the lower bars should be kept as paralell to the ground as possible,which they are now,but would lowering the lower bar in the front help?Common sense would tell you it would push the instant center foreward,but down,which might cancel each other out.It would be alot easier than moving the top bars,but we dont think that'll work.The tires bite,then the rear end comes up.At first it stretches the front suspension completely,rear end squats,then lifts,and loses traction.This leads us to believe the tires and suspension are working,but the geometry for weight transfer needs help.We've tried different spring and shock combinations and it doesn't change.I know the question is pretty general without specifics,but just wondered if anyone could help.Any thoughts on this would be greatly appreciated.

[stroker1]

Without looking at a video, it's going to be hard to say. You might try posting on dragstuff.com or yellowbullet.com I know Dave Morgan moderates the suspension forum at dragstuff and he is very knowledgable. In fact he has a book that I hear is very informative. My biggest sugestion is to get video of the launch taken from the left rear point of view. Like on a 45 deg angle from the back. Then post it and you will probably get the best results.

http://www.dragstuff.com/forum/viewtopic.php?f=1&t=2993

http://www.yellowbullet.com/forum/

[XTEN]

Thanks,Stroker.We have vid,but all from the right side,mostly front.Tranny wont allow any more video for the time being.Gotta fix it.