Launch control

Launch control

Author
Discussion

JonnoMcJoncliffe

Original Poster:

55 posts

138 months

Monday 8th October 2012
quotequote all
Well, would ya?

rassi

2,447 posts

250 months

Monday 8th October 2012
quotequote all
Do you have a warranty and/or a clutch replacement budget?

JonnoMcJoncliffe

Original Poster:

55 posts

138 months

Monday 8th October 2012
quotequote all
No...

Jarrod

234 posts

259 months

Monday 8th October 2012
quotequote all
Depends, e46 or e92? As i understand it the 46 has a dry clutch and the 92 has a wet clutch which does not wear as quickly. So e46 possibly, e92 definitely!

rassi

2,447 posts

250 months

Monday 8th October 2012
quotequote all
Jarrod said:
Depends, e46 or e92? As i understand it the 46 has a dry clutch and the 92 has a wet clutch which does not wear as quickly. So e46 possibly, e92 definitely!
The OP has an M6

E30M3SE

8,465 posts

195 months

Monday 8th October 2012
quotequote all
If it's a E63 M6 it's as per E46 M3 i.e. has dry clutch.

JCHill

159 posts

145 months

Monday 8th October 2012
quotequote all
Thought about it a couple of times...engaged it once (to prove to myself I had the routine worked out)...but no...never gone through with a launch.

It's probably just me being over-protective but I just don't think it's such a good idea to dump 500+ hp through the transmission from a standing-start.

Yanto

543 posts

207 months

Monday 8th October 2012
quotequote all
Can't think of an occasion when you'd need to use it ??

andygtt

8,344 posts

263 months

Tuesday 9th October 2012
quotequote all
if i knew how to do it I probably would.... thats why I've deliberately never looked to find out how to do it smile

ecain63

10,588 posts

174 months

Tuesday 9th October 2012
quotequote all
Launch control is harsh on the car, but so long as the clutch is allowed to cool between launches wont wear as fast as you might think. With the E46 M3 BMW allowed i think 3 launches on a clutch before the warranty is voided. Now, i think that the latest E60/1/3 M5s and 6's are allowed 7 launches on a clutch before warranties are voided. All the data and counters are stored on the cars hard drive so BMWUK can have BMWHQ check the cars history should the owner be looking to make a clutch or drivetrain claim. I know mine was checked when i had my new clutch fitted. Clutch temps, oil, coolant and engine temps are all factors when BMW decide to cover you or not. Sensible use is allowed, but its really not a tool for constant traffic light GP's.

JonnoMcJoncliffe

Original Poster:

55 posts

138 months

Tuesday 9th October 2012
quotequote all
It seems wrong in every way. Too much power. Too much weight. So I won't. But if it was new and under manufacurer's warranty you'd just have to a couple of times!
Always best to get something rolling first.
Having great fun though!

e46m3c

874 posts

154 months

Wednesday 10th October 2012
quotequote all
do it! Its what the cars designed for!

In the E46 the speed at which you press the accelerator will determine the ferocity of the launch. If you mash the pedal it will do a clutch dump. Otherwise it will slip the clutch enough to get a perfect launch time after time.

You gotta do it atleast once! biggrin


thepony

1,697 posts

164 months

Wednesday 10th October 2012
quotequote all
ecain63 said:
Launch control is harsh on the car, but so long as the clutch is allowed to cool between launches wont wear as fast as you might think. With the E46 M3 BMW allowed i think 3 launches on a clutch before the warranty is voided. Now, i think that the latest E60/1/3 M5s and 6's are allowed 7 launches on a clutch before warranties are voided. All the data and counters are stored on the cars hard drive so BMWUK can have BMWHQ check the cars history should the owner be looking to make a clutch or drivetrain claim. I know mine was checked when i had my new clutch fitted. Clutch temps, oil, coolant and engine temps are all factors when BMW decide to cover you or not. Sensible use is allowed, but its really not a tool for constant traffic light GP's.
Can BMW UK or BMW Dealers monitor clutch temps or oil temps how has varied between services when they plug in OBD ?

Why is it important for clutch to cool and how does letting it cool allow u to do more launch control starts ?

Thanks :-)

andygtt

8,344 posts

263 months

Wednesday 10th October 2012
quotequote all
ok so maybe the question should be... Have ya?

SS2.

14,455 posts

237 months

Wednesday 10th October 2012
quotequote all
andygtt said:
ok so maybe the question should be... Have ya?
Considered it, but never gone through with it (E46)..

0836whimper

974 posts

197 months

Wednesday 10th October 2012
quotequote all
No.

The idea that I could, and the manual explaining how is fun enough. Can't summon up the enthusiasm to actually do it.

Bit like owning a super-capable off-roader that never goes off-road I guess.

Boogsie

124 posts

150 months

Wednesday 10th October 2012
quotequote all
Do it at least once smile
It's amazing how much faster the car is when launched.

Also, not 500hp. Only enough to move the car without tyres slipping. It's the whole point of launch control, to not just dump all 500hp into the wheels, but to feed it in as fast as the car/road can take it.

ecain63

10,588 posts

174 months

Wednesday 10th October 2012
quotequote all
thepony said:
ecain63 said:
Launch control is harsh on the car, but so long as the clutch is allowed to cool between launches wont wear as fast as you might think. With the E46 M3 BMW allowed i think 3 launches on a clutch before the warranty is voided. Now, i think that the latest E60/1/3 M5s and 6's are allowed 7 launches on a clutch before warranties are voided. All the data and counters are stored on the cars hard drive so BMWUK can have BMWHQ check the cars history should the owner be looking to make a clutch or drivetrain claim. I know mine was checked when i had my new clutch fitted. Clutch temps, oil, coolant and engine temps are all factors when BMW decide to cover you or not. Sensible use is allowed, but its really not a tool for constant traffic light GP's.
Can BMW UK or BMW Dealers monitor clutch temps or oil temps how has varied between services when they plug in OBD ?

Why is it important for clutch to cool and how does letting it cool allow u to do more launch control starts ?

Thanks :-)
Yeah, bmwhq can download the cars blackbox which stores all the cars data. High clutch temps will cause friction surfaces to deteriorate faster than when at normal running temps. Remember that smell you get from a manual car when you've ridden the clutch too long, that's it burning up. Allowing it to cool between launches means the metallic elements in the clutch plates won't burn and separate from the other elements.

thepony

1,697 posts

164 months

Wednesday 10th October 2012
quotequote all
ecain63 said:
Yeah, bmwhq can download the cars blackbox which stores all the cars data. High clutch temps will cause friction surfaces to deteriorate faster than when at normal running temps. Remember that smell you get from a manual car when you've ridden the clutch too long, that's it burning up. Allowing it to cool between launches means the metallic elements in the clutch plates won't burn and separate from the other elements.
Thanks :-)

shibby!

921 posts

197 months

Thursday 11th October 2012
quotequote all
Is there not 2?

Engaging launch control and flooring the throttle will bring the revs up reasonaby high, dump and wheelspin leaving 11's down the road like a badass.

If you put it down halfway it will engage a proper no spin launch?