Manual Transmission T56 | T5 | MN12 | Clutches | Hydraulics | Shifters

"launch control" for manuals?

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Old Sep 13, 2012 | 11:37 PM
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Default "launch control" for manuals?

after having my car at the track tonight I was thinking, does anyone make anything that can control clutch slip off the line for more consistent launches? I've seen bikes with and heard stories of old drag racers running "slipper clutches" but haven't seen any real universal options. does such an item exist?
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Old Sep 14, 2012 | 01:31 AM
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Nothing really out there for clutch slip control besides a slipper clutch, which is big $$$ and not streetable. Best thing to "launch control" is a 2step so at least the rpm you launch at is consistent...
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Old Sep 14, 2012 | 11:57 AM
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Hmm. I am thinking of developing such a product if one is not already available


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Old Sep 14, 2012 | 12:03 PM
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out side of the slipper clutch and a two step. there is this thing attached to ya called a left leg.
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Old Sep 14, 2012 | 12:49 PM
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Originally Posted by 99french
out side of the slipper clutch and a two step. there is this thing attached to ya called a left leg.
+1 Driver mod
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Old Sep 15, 2012 | 02:48 PM
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I read this a couple days ago.

It got me thinking though.


What if you put a line lock in line with the clutch slave as well as a 2 step, with some sort of a programmable timer/delay box.

You might be able to come up with a pretty stout and tuneable launch package.

Press the clutch in and hold a button. Release the clutch, floor it and release the button. Zoooooooooooooooom baby.

Anyway just thinking out loud.
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Old Sep 15, 2012 | 03:09 PM
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Originally Posted by RAMPANT
I read this a couple days ago.

It got me thinking though.


What if you put a line lock in line with the clutch slave as well as a 2 step, with some sort of a programmable timer/delay box.

You might be able to come up with a pretty stout and tuneable launch package.

Press the clutch in and hold a button. Release the clutch, floor it and release the button. Zoooooooooooooooom baby.

Anyway just thinking out loud.

Or a system that doesn't allow the clutch to dump. Would use some sort of controller to move the fluid through at X rate to where it will slip the same every time and be adjustable.


But I plan to use my left leg
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Old Sep 15, 2012 | 06:41 PM
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you will destroy clutches like no ones business.... not many discs can take that kind of abuse except sintered iron.
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Old Sep 15, 2012 | 09:08 PM
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Originally Posted by 99french
out side of the slipper clutch and a two step. there is this thing attached to ya called a left leg.
LOL, I was thinking exactly the same thing.

For me personally the main attraction to a manual is the amount of control over the car. You can control exactly how the car launches with the clutch and practice to be faster and more efficient. Something like launch control or traction control just ruins it, no fun!
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Old Sep 16, 2012 | 04:06 AM
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Originally Posted by RAMPANT
I read this a couple days ago.

It got me thinking though.


What if you put a line lock in line with the clutch slave as well as a 2 step, with some sort of a programmable timer/delay box.

You might be able to come up with a pretty stout and tuneable launch package.

Press the clutch in and hold a button. Release the clutch, floor it and release the button. Zoooooooooooooooom baby.

Anyway just thinking out loud.
They already do...it's called a trans brake....
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Old Sep 16, 2012 | 07:18 AM
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Originally Posted by Martin@Tick
They already do...it's called a trans brake....
Haha, yes.

I have no desire to run an auto, as drag racing is just an added place to play with the car. Autocorss and track days are more my thing. I do have a 2 step in my Big Stuff 3 already, though I have not wired it up yet.

The launch control is not anything I plan to do, but the OPs idea is cool. My left leg launch has a best of a 1.47, so that's not too bad.
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Old Sep 16, 2012 | 01:43 PM
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Originally Posted by RAMPANT
Haha, yes.

I have no desire to run an auto, as drag racing is just an added place to play with the car. Autocorss and track days are more my thing. I do have a 2 step in my Big Stuff 3 already, though I have not wired it up yet.

The launch control is not anything I plan to do, but the OPs idea is cool. My left leg launch has a best of a 1.47, so that's not too bad.
I was just messing with ya, 1.47 is damn good!

You have a very nice set-up!
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Old Sep 22, 2012 | 03:27 PM
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Built Suspension + Slicks + 6.5k clutch dump = Launch "Control"
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