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SXI - Matt

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Registered: 8th Jul 07
Location: Leicestershire Drives: Corsa C SRI
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8th Jun 09 at 22:10

Is it always the best way on a drag strip as very rarely if ever hear it being used at santa pod?

Member

Registered: 5th Jul 00
Location: Aberdeen City
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8th Jun 09 at 22:15

what does launch control sound like

S@M

Member

Registered: 3rd Oct 07
Location: East Yorkshire
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8th Jun 09 at 22:17

3...2...1....

we have lift off

FruitBooTeR

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Registered: 18th Jan 07
Location: Wolverhampton Drives: S15
User status: Offline

8th Jun 09 at 22:18

quote:
Originally posted by AK
what does launch control sound like

proberly on about anti lag

BluKoo

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Registered: 8th Apr 02
Location: Stonehaven (Scotland)
User status: Offline

8th Jun 09 at 22:19

quote:
Originally posted by FruitBooTeR

quote:
Originally posted by AK
what does launch control sound like

proberly on about anti lag

'tis what i was thinking too.

DizzyRebel

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Registered: 2nd Jan 09
Location: Lincoln
User status: Offline

8th Jun 09 at 22:20

I had it on my old 6N polo commuter lmao

http://www.youtube.com/watch?v=r1JVqdIIKyo

Volume up btw!

[Edited on 08-06-2009 by DizzyRebel]

Butler

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Registered: 2nd Jun 05
Location: London
User status: Offline

8th Jun 09 at 22:20

I would assume if he has any sense he means hearing someone bounce off a limiter at around 3.5k?

Nick-S

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Registered: 3rd Mar 04
Location: Leigh. Drives: RS Megane 230 F1 Team R26
User status: Offline

8th Jun 09 at 22:21

just sounds like a rev limiter but lower down in the rav range tbh.

[Edited on 08-06-2009 by GSi_16v]

Butler

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Registered: 2nd Jun 05
Location: London
User status: Offline

8th Jun 09 at 22:21

quote:
Originally posted by DizzyRebel
I had it on my old 6N polo commuter lmao

http://www.youtube.com/watch?v=r1JVqdIIKyo

brilliant

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Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline

8th Jun 09 at 22:22

you get 2 stage rev limiters which you can prob call launch control of sorts.

1st stage, foot the floor and the engine will hold revs at 6000 or so and build boost or whatever, light go green and you switch to stage 2 and get fulls revs back...

Would really call that launch control though.

You hear that popping and banging on the starting line with the likes of Keith Cowies R32 etc

SXI - Matt

Member

Registered: 8th Jul 07
Location: Leicestershire Drives: Corsa C SRI
User status: Offline

8th Jun 09 at 22:27

Im not to clued up on this so bear with me but i always thought launch controle was as some one said car hold revs at say 4k then once going get full rev range but when ever they sit at line never hear them revving just idling? As in some videos here them bouncing off limiter then they lauch, If iv got it wrong could some one explain?

[Edited on 08-06-2009 by SXI - Matt]

Nick-S

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Registered: 3rd Mar 04
Location: Leigh. Drives: RS Megane 230 F1 Team R26
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8th Jun 09 at 22:27

you got it spot on.

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

or at 2.50 on this 1

http://www.youtube.com/watch?v=OfSe9TFBecg

[Edited on 08-06-2009 by GSi_16v]

SXI - Matt

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Registered: 8th Jul 07
Location: Leicestershire Drives: Corsa C SRI
User status: Offline

8th Jun 09 at 22:30

Thought so, so why never hear it being used? is it not always the best way?

Nick-S

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Registered: 3rd Mar 04
Location: Leigh. Drives: RS Megane 230 F1 Team R26
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8th Jun 09 at 22:31

iaz used it on his vx220 on sunday.

Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline

8th Jun 09 at 22:31

because joe average doesnt use it.

Mostly high spec turbo cars to get the turbo's going.

SXI - Matt

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Registered: 8th Jul 07
Location: Leicestershire Drives: Corsa C SRI
User status: Offline

8th Jun 09 at 22:35

oh ok so not needed on n/a cars as dont need to get the turbo spooled like you would in a turbo car? If that's the right way of putting it?

DizzyRebel

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Registered: 2nd Jan 09
Location: Lincoln
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8th Jun 09 at 22:35

Launch control depends on the application and the system. some cars just have a lower rev limiter in first. Others with a more technical approach use computers for a full throttle launch. IE you hold your foot flat down and the ecu will control clutch slip, power transmitted to rear wheels by use of the abs system for a kind of traction control etc to ensure maximum power is transferred to the wheels with minimal loss of traction.

M3 CSL's have a good system, so do the nissan gtr's iirc.
It has no real sound:

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

Unlike my launch control:

http://www.youtube.com/watch?v=r1JVqdIIKyo

Butler

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Registered: 2nd Jun 05
Location: London
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8th Jun 09 at 22:37

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

FlamingCorsa

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Registered: 22nd Apr 03
Location: Shropshire
User status: Offline

8th Jun 09 at 22:37

quote:
Originally posted by GSi_16v
iaz used it on his vx220 on sunday.

yea and it just set my car into safe mode cos made traction control have littel fit, lol!

wish i had tried again with launch control tried it on the road few times and set off really well, its almost seems so slippy on drag strip to use it!

Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline

8th Jun 09 at 22:39

launch control is just an automated foot and clutch..... no one 'needs' it just helps some

most folk can hold a car on the line at 4000 revs and dump the clutch, or slip the clutch to get a good launch. BUT when you have 1000 odd hp I imagine there isnt much time to do that between holding on and trying to stop

SXI - Matt

Member

Registered: 8th Jul 07
Location: Leicestershire Drives: Corsa C SRI
User status: Offline

8th Jun 09 at 22:41

ah ok makes sense now

FlamingCorsa

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Registered: 22nd Apr 03
Location: Shropshire
User status: Offline

8th Jun 09 at 22:42

http://www.racelogic.co.uk/?show=Traction_Control-Technical-Launch_Control

there is little bit bout how launch control on mine is ment to work not tried the full throttle gearchanges yet either!

Robin

Premium Member

Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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9th Jun 09 at 13:07

quote:
Originally posted by AK
launch control is just an automated foot and clutch..... no one 'needs' it just helps some

most folk can hold a car on the line at 4000 revs and dump the clutch, or slip the clutch to get a good launch. BUT when you have 1000 odd hp I imagine there isnt much time to do that between holding on and trying to stop

Depends on the system Adam. A good launch control setup will retard the ignition and hold the revs at a set level, with full throttle, as long as the clutch is depressed, then when you release it, it slowly feeds the ignition timing back in until it's back where it should be, controlling the wheelspin off the line.

Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline

9th Jun 09 at 13:29

you didnt read my prevous reply about staged limiters etc then

But.... all traction control essentialy is a device to do the job (better) your feet do.

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