how to slip a clutch
 

been going to the eight mile track to learn my car, first night out, did the burn out went to the lights, went on 2 step car build 10 psi, let the clutch go car felt on its face. went back last nite did the same thing, my cuz drove the car, slipped the clutch, car made it's first decent pass. im using mickey thompson 26x8x15 tires, clutch is os giken twin disc. my question is, when using a twin disk clutch do you have to slip the clutch or i just need to build more boost of the line? two other friends with twin disc in there car, different cars(evo & supra) have to do the same thing. :scratch:

it all depends on how strong your driveline is built, if its tough as nails, then you can rev its tits of and dump the clutch , but if its so so then slip and go is the way to do it,
My style is to pull up hand break, bring revs up, release clutch ever so slightly till you can feel the rear end load up or dip down just a tiny bit , then pull harder on handbrake and rev your engine too its rev limit you have chosen for its best launch,
Then its a case of drop handbrake at the same time as flooring your throttle and releasing clutch .
Easier if you have a two step like you said you have, as in my case i just put foot to floor flat and modulate clutch height and handbrake tension to get good slip. With my two step it sits on 8750 every time so its one less thing to think of, as before i had to always watch the tacho and the tree to get it right , too fuckn hard syndrome :lol:
Ps also i only get about 3 psi on my two step, its in development stages with the motec so its not as good as the microtech style , but ill get there

you could always wire in a line lock to activate off the 2 step/ clutch pedal and de-activate when clutch pedal is released.. What I did. Then you can have less to worry about.

And people say how easy drag racing is.. :lol:

Put more air in your slicks until it starts to spin to much then back them down a bit.

Or wait until the clutch gets sleepy and just slip of!

ok thanks will try these techniques next time and let you guys know the results, also, do you guys think it has anything to do with twin disc clutch that i have in the car?

No i have both and theres no difference!

If you dont have h/p to spare a little tire spin helps to get a better 60' time and prevents booging.
Add air to the slicks like i said and try it!:nod:

agree with above , as if your stumbling away from the line you've bogged down too much, and your clutch use in the first run was why it was better .
More revs and just don't drop the clutch and bog down , slip it more, hold onto that handbrake hard and ride it out the hole with a boot full of revs .

Tyres are a major factor in actually getting good launches though