First run today my car launched and when the tires came back down they started shaking uncontrollably. I had to let off just after the 60 because it was so bad. Last year was the first year with the car and its never done that once. I checked all the steering linkages and everything up front and its all fine. Has anyone had this problem with theirs and what did you do about it?

 

Get your steering geometry checked. You want as much caster as you can get to help keep the tires straight. It also sounds like you have bump steer. Every now and then I feel a shimmy when the front end comes down but never bad enough that I have to let off the throttle

I limit how much suspension travel I have with some cable limiters. I have a bump steer kit but I've never had it accurately checked. Another option is to install a steering stabilizer.

 

Thanks for the advice. How much travel do you have in the front? The front of mine is really low and has a lot of travel

 

I can't remember the exact measurement but the cables stop movement before the struts are fully extended. I still want enough extension so when the front end comes back down that the shocks start to slow the movement down and absorb the impact. I also play with shock settings. During T&T passes, I usually set them on full loose and the front end pops up very easily and I can carry the front wheels to the 60' mark. The spectators always like that. During competition, I stiffen up the extension to help keep the front end down.

 

Think ill adjust the caster and put some cables on and t&t with different amounts of travel then

 

Ed Quay has a steering damper kit that will stop that. I am assuming that you've swapped to either a Vega or S10 manual box? Either way the Quay kit will take care of that shimmy.

 

You might want to check the adjustment on the steering box also. It may be sloppy.

 

I had this problem and the ED Quay shock fixed it. I had 6 degrees + caster Tight new linkages and manual steering box 28 inch frt tires and lots of travel. it does work for a 50$ fix