How do you launch your Skyline?

[vipermtn]

i will be runing in about 2week time hopefully.. hope to c u guys there

[Guilty]

Just wondering, how the hell can i launch my r33, without the back wheels spinning?

Everytime i rev it to around 3-4000 rpm, and i hold the clutch, and wen the lights go greeen, i release my clutch and floor it, but then my back wheels start to spin, and the back just to sway left to right.

How can i launch without that happening bcoz itz reali annoyin wen im tryin to take off at the lights and my cars starts spinning!

So yeah any help would do thx.

[dacow]

http://www.wsid.com.au

[Majanal]

Guilty, it is called throttle control mate. insetad of floring it "feed" the throttle in. ie. dropp the clutch at 3/4 grand and then as momentum build slowly increase the amount of throttle you have on. the tyres your running also plays a major part in the amount of throttle you can feed and how quickly.

Hope this helps.

[Ceffo]

http://www.wsid.com.au

Thanx dacow..

BTW for the nSW membership do you guys get special deals at WSID?..

Cheers

T.

[Guilty]

umm thanks majanal

ill try that tomoloz lol

[benm]

Also... get yourself a set of 'pineapple' for the rear. They cost about $160 installed and will give the rear end better squat.

[SLY33]

on the subject of tyre pressures, i agree that letting pressure down helps in most cases, as it allows more sidewall flex, which leads to a bit more squat, which leads to a greater footprint and more traction, but what about on a 19inch tyre, where you have very little profile and little sidewall?? Has anyone dragged at the strip on 19's?? Id like to get out there soon, but only have 19's here, stockies still back in S.A.

[benm]

According to the "1/4 Mile List" that I have... R34GTT-R is using 19's @ 30psi and still manages a 2.1sec 60ft'r.

[R33vit]

I dropped my tyre pressure to 15psi and I felt it helped. I do a small burnout until I start getting axle tramp (feels like the tyre's starting to stick) and then go from there.

[mrchams]

Just to add my 2 cents.

My R32 GTR is running a T78 33D turbo with Trust engine internals and a Apex triple plate clutch.

I recently raced my car at the WSID which is a very impressive venue.

If people aren't familiar what big single turbos are like, they come on boost approx 5,000 rpm which can make things very trick when trying to get a good start while keeping it on boost and also preventing huge wheel spin at all 4's.

Anyway, it took my 3 runs to get the launch right, and still there is room for improvement.

Basically, the first couple of launches bogged down to much because I didn't slip the clutch enough.

I first launched at 7,000rpm, slipped it for approx 1 sec. I think I was near the 60ft mark by the time I was totally off the clutch. The turbo was just out of boost which made the car bog down and loose lots of time.

So the next run I brought the rev's up to 8,000rpm, brought the clutch out till I could feel it grab, down with the throttle while bring out the clutch till it grabbed enough to move the car but enough slip to keep the turbo on boost.

Once I heard the wastegate crack open I let the clutch out all the way and just control throttle till I was off and away.

I was running low boost 1.2 bar which produces 250kw @ 4's (Croydon dyno readings) My best time was 12.4 @ 177 km/h with a 1.8 60ft. I was shifting at 9,000 rpm, crossing the line in 3rd gear. I found I lost time shifting into 4th. I forgot to mention, I was also running on 19" rims too. Tire pressure was not touched. I believe the pressure was 45 psi in all 4's.

My car makes approx 440kw @ 4's on high boost which I haven't racing yet but will soon.

I'll keep you posted.

Cheers