Quote:
Originally Posted by dutchman1
Mike,
What's the best way to launch a street class autocross car? Seems like if I launch (by simply dumping the clutch) around 3k, I get severe wheel hop and if I go up to 5k+ I get so much wheel spin I'm basically just doing a burnout. Is slipping the clutch the only way to get these cars going quickly? I'm also running koni yellows, would softening up the rebound a tad be helpful?
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Launch RPM changes as surface and tires change... At least in my experience. That said, minimizing clutch slip without bogging and without excessive wheel spin just takes practice. A very quick lift if you get spin often gets things back on track. I'm still inconsistent on launches and it was one of the things I focused on a lot last year. A smooth start does seem faster, and if that takes a tiny bit of clutch slip... If you smell it, you've gone too far.
The softer suspension probably makes hop more of a problem for you than for me. Just barely into wheel spin rpm with a little throttle sensitivity is probably the way to go, with just enough clutch slip to soften the shock you get with a clutch dump.
Curious to hear how others approach this.