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Why do people use the ebrake when launching?

Old Mar 7, 2013 | 01:56 PM
  #16  
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I smoke my clutch perfectly each time, guess I need more practice.
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Old Mar 7, 2013 | 03:06 PM
  #17  
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i only have the stock 5500 launch control, so i never really put the ebrake up when launching. that said, if i had alot of torque, i would want to minimize shock as much as possible.
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Old Mar 7, 2013 | 03:39 PM
  #18  
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Seems no matter how I do it I burn the clutch horribly every time. But I thought I was told at one point that the Evo when the parking brake is engaged it disables the awd till its dropped? Is that true
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Old Mar 7, 2013 | 04:08 PM
  #19  
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Originally Posted by polish_pounder
Seems no matter how I do it I burn the clutch horribly every time. But I thought I was told at one point that the Evo when the parking brake is engaged it disables the awd till its dropped? Is that true
I don't know where u heard that, I accidently left mine up before and dropped the clutch and she got a little squirly all round so I would say no that's not true.

I never thought about loading the drivetrain I'm definately gonna start doing this now.
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Old Mar 8, 2013 | 03:24 AM
  #20  
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For any who uses the ebrake for launching or has left the ebrake up in the past should get one of these. Works great!
http://www.maperformance.com/cusco-d...l#.UTnKG7-9Kc0
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Old Mar 8, 2013 | 03:48 AM
  #21  
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Originally Posted by polish_pounder
Seems no matter how I do it I burn the clutch horribly every time. But I thought I was told at one point that the Evo when the parking brake is engaged it disables the awd till its dropped? Is that true
No, you can't disable the awd function of an evo. When you engage the parking brake, the ACD is disengaged to prevent damage to your drivetrain and the ACD unit. You may have heard this....
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Old Mar 8, 2013 | 05:17 AM
  #22  
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I never do but should. Only tried it a couple times and wasn't comfortable with it so I haven't since.
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Old Mar 8, 2013 | 06:07 AM
  #23  
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Originally Posted by Craig King
Not as much as your beautiful new spelling of the word 'sense' !
Oh snap!
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Old Mar 8, 2013 | 06:27 AM
  #24  
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Originally Posted by Teal2nnr
No, you can't disable the awd function of an evo. When you engage the parking brake, the ACD is disengaged to prevent damage to your drivetrain and the ACD unit. You may have heard this....
You do realize the funtion of acd right? Its exact purpose is to limit power to the rear wheels.

As for the theory behind the ebrake and awd. The center diff inside the transmission is an open diff. Means it will always send power to the wheel with the least resistance. If you ebrake is locked but your front wheels can turn then it will only send power to the front. But when rolling it distributes evenly. So at a stop with your front wheels on say rollers or ice, pull your ebrake and yes only your front wheels will spin. But if your back wheels are rolling at any speed then they will recieve some amount of torque until the acd computer shuts them off.

Trying the above is not safe for the car and can destroy your driveline. Anytime an open diff is operated in such a way it can damage the gears leading to severe drive train damage. It is only intended for short period use during cornering or wheel slip conditions. Try to avoid these situations just know that its will save you from stupid people...
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Old Mar 8, 2013 | 09:35 AM
  #25  
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I learned how to do this in Japan. Lots of e-brake bandits, especially in touge. I do this if I am going to enter a turn with buttloads of speed. I downshift, keep RPMs up, hand on hand-brake and apply some upwards pressure to "feel" resistance (don't lock the e-brake) while keeping some throttle going to keep the RPMs up in the arc and right before entering the exit of the arc, I drop the e-brake and hit the gas pedal to go shooting out on a straightaway. It feels like being on rails because the car isn't loading and unloading all throughout the turn. Try it on the street and see what I mean. This is quite handy when racing against higher HP and more agile cars.
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Old Mar 8, 2013 | 12:48 PM
  #26  
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I will try this at my next autox
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Old Mar 8, 2013 | 12:56 PM
  #27  
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STM sells a kit for this, with no lock.
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Old Mar 8, 2013 | 01:16 PM
  #28  
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Using the ebrake is a poor replacement for a staging brake. If that is what you are actually trying to do in an attempt to get better times and faster 60's then you should get a real hydraulic staging brake, spend the $250-$300 and see some real results. Staging brakes also do not have an auto locking mechanism so they release completely when let go.
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Old Mar 8, 2013 | 01:28 PM
  #29  
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Originally Posted by joseph143
I will try this at my next autox
I think you will find a whole new appreciation for the e-brake when you do.
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Old Mar 8, 2013 | 01:29 PM
  #30  
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this is very interesting. im not a drag racing guy but how does this work? i mean how do you do it?
you slip the clutch and pull the ebrake half way up??? thats like heel toeing while doing 1mph lol
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