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Old Jan 21, 2008 | 02:51 PM
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Default launch control...

who has it?? and isit worthwile??

cheers guys
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Old Jan 21, 2008 | 03:12 PM
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I tried it on mine and, in all honesty, without much of an understanding as to what it was.

What I had hoped for was a way of holding a button to give a secondary low rev limit, I was wrong!

The button applied various things like Ignition Retard to get the turbo spooling. So, a little like ALS, but it seemed far more aggressive. I haven't touched it since as the RST doesn't need any more help towards having NO traction on launches. It's less standing-start power thats needed, not more!!

Full Throttle Gearshift. There's another. Mighty impressive, but it got my Alcon 6-Paddle spinning without a hope of holding it!!

Both good features, but you need a proper transmission for them to be worthwhile.
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Old Jan 21, 2008 | 03:27 PM
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so a standard 2wd box and 6 paddle wont cope
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Old Jan 22, 2008 | 01:07 PM
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A lot of ECU's use simplistic TC systems rely on simply fixing the rpm at a temporary limit which is lower than normal - they take no account of what is actually happening between the tyre and road and the grip afforded by the road surface.

Better quality ECU/TC systems have multiple wheel speed sensors which can sense whats happening and act accordingly.

I've used TC systems from both Motec and RaceLogic both of which do the job very well. Racelogic being more more configurable (unless you have a Mx000 range ECU...)

It just so happens I've got a RaceLogic pro (with 12 position adjuster) for sale, includes 4 wheel speed sensors and spark cut interface. It is NOT suitable for hooking into vehicles with ABS and fuel injection. It IS suitable for something with a dizzy and single coil eg RWD Pinto / BDA etc
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Old Jan 22, 2008 | 01:18 PM
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Launch control can be good if you require standing starts for anything. If set-up correctly it can benefit 2WD as much as 4WD (remember you can adjust what rpm and boost is given).

It was set-up on the HYDRA ecu on my Subaru and we were testing set-up of it at Donington the other week. Unfortunately 1bar of boost (thats just over 400bhp / 430lbft) at launch, on a greasy up-prepped surface didn't go down very well with traction.

Depending on how agressive you want this.... you may need a box, diffs and driveshafts not made of chocolate. Stick the Newage STi Subaru running gear in your Ford if you want something to take the abuse.
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Old Jan 22, 2008 | 01:22 PM
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Pointless on a 2wd cossie, which in general has less grip than Ginge has on reality in some of his posts
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Old Jan 22, 2008 | 01:24 PM
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It is not pointless if you can't launch for sh!t and you want to do 1/4m stuff etc..... 2WD or not. I know plenty of people that can't launch a car for sh!t.
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Old Jan 22, 2008 | 01:32 PM
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But Launch Control isn't there to make someone who absolutely can't launch into some sort of pro drag driver!!

It's like saying you're shit in bed, so you'll get Ron Jeremy round to do it for you.
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Old Jan 22, 2008 | 02:49 PM
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i have a standard 2wd box and 6 paddle clutch with heavy duty clutch plate.
when i use my launch control i always use it setting of in second gear and there is no way i could get the car going quicker in first without it.

i thinks its the dogs and sounds good too


regards

mike
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Old Jan 22, 2008 | 02:57 PM
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Originally Posted by mikelomax
i always use it setting off in second gear and there is no way i could get the car going quicker in first without it.
Excellent, you just saved me both a post and also the cost of a call. Your car is ready Mike.
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Old Jan 22, 2008 | 03:30 PM
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Originally Posted by Christian and Beccy
But Launch Control isn't there to make someone who absolutely can't launch into some sort of pro drag driver!!

It's like saying you're shit in bed, so you'll get Ron Jeremy round to do it for you.
Not sure what launch control systems you have used, but Stevie Wonder with no feet could launch my car effectively with LC on. Whats difficult about keep the throttle flat to the floor and just side stepping the clutch when the boost is at the desired level. The nack in launching is being able to coordinate your left and right feet at the same time, so that when you come off the clutch you ensure you have the revs up. All this at the right RPM. LC takes most of the brain work out of it. This is assuming that LC has been set-up correctly.

TBH.... launching was not a major issue with me as can consistently get 1.6's to 60ft.... but every little helps and if I dont have to concentrate on launching so much, I can spend the stress time somewhere else.... like my gear changing.
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Old Jan 22, 2008 | 04:47 PM
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But as said, most std boxes or indeed transmissions will not take LC kindly with any decent power, snapped mainshafts are only a clutch side-step away!!! you still need a degree of mechanical sympathy and actually feed the clutch in to try and minimize the drivetrain shock-loads, or you will be getting very good 0-20mph and then going 20-0Mph as well
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Old Jan 22, 2008 | 04:51 PM
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Originally Posted by Stavros
Pointless on a 2wd cossie, which in general has less grip than Ginge has on reality in some of his posts
ROTF that comment cant go unnoticed!
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