Cayman R - How to launch manual DRY

[DMCaymanR]

Hi all.

Question as above, compared to the PDK which revs to 6K there abouts.

What Revs to let the clutch up. As always you want to treat the clutch with respect and its better to burn the tyres.

What kind of stress ison the rear Axel etc? Tramping....

How do you guys launch without killing the clutch.

Dave

[Zyp]

Get it bouncing off the limiter and just drop the clutch very very quickly, and as aggressively as you can.

That should do it....

[red_slr]

Nah, too much revs.

I would go for 5-6k and then drop the clutch as fast as you can and then WOT at the same time.

[DMCaymanR]

You sure, Isn't that bad?

I thought to let the clutch out more slowly.

4-5K and heavy drop on the clutch. I assume Porsche clutches are pretty resiliant?

Dave

[Herman Toothrot]

Slow clutch out equals a burnt clutch. Not launched a Cayman / Boxster by my old MR2 Turbo, dial up 4000rpm and side step the clutch flooring it at the same time and it'd launch like a rocket.

[Zyp]

• makes mental note for when a certain CR comes up for sale in a few days time*

[Herman Toothrot]

http://www.youtube.com/watch?v=KwQGOUx9lBo

yep appears the same as worked on the MR2 works on the Boxster.

[Gibbo205]

Zyp said:

*makes mental note for when a certain CR comes up for sale in a few days time*

Yeah bores will be scored!

[paulmoonraker]

red_slr said:

Nah, too much revs.

I would go for 5-6k and then drop the clutch as fast as you can and then WOT at the same time.

This

[DMCaymanR]

I never launch. Always clutch out before giving it the beans

[FisiP1]

I haven't really done this on Porsches, but on my Mustang V6 my rule of thumb was rev counter to the 12 o clock position, sidestep foot from the clutch.

Did it endlessly in the US, I'm sure it was murdering the clutch from the sheer volume of times I did it, but it never failed and the launches were pretty solid.

That, however, doesn't work with something with 1100hp, even with drag radials.

As someone said, letting out the clutch more slowly is just causing it to slip and wear even more. If you sidestep/dump the clutch and it slips then a) your clutch is rubbish and can't handle a full-on launch, b) your revs are too high. I'd guess a Cayman R clutch could handle 5k no problem.

Edited by FisiP1 on Thursday 17th January 03:04

Edited by FisiP1 on Thursday 17th January 03:05

[Martian O]

DMCaymanR said:

I never launch. Always clutch out before giving it the beans

Unless it's a hire or demo car!

[thegoose]

On the Boxster race car I found that if I held the revs (can't remember exactly but probably 4.5k?) with the clutch on the biting point and holding the car back on the handbrake (a very successful method on torsion bar cars, and fine on a 964 too) when the lights went out and I then dumped the clutch (whilst releasing the handbrake) the clutch itself would spin up - not good for a race start!

I changed to getting the clutch out as fast I could without any wheel spin then flooring the throttle, which was more efficient and much more sympathetic.

The point is, riding the clutch slightly first before launching didn't work and also showed up the clutch as a weak point, so abuse it with that in mind.

[Xps911]

Martian O said:

Unless it's a hire or demo car!

thats what a hire/demo car is for

[Old Trout]

Traction off

Side step clutch at around 5k rpm

Better to get the clutch to grip and the tyres to slip, engine might hit limiter briefly and you get a couple of short black lines, but the start will be quick.

Used it to get many 1.6s 60ft times in drag racing.