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Old 08-23-2000, 02:10 PM   #1
ColinL
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'01 Erion CBR 929

Post

The front tires spin because they start out with 50% of the torque and not enough traction due to weight transfer.

Some lower torque value, maybe like 20%, would be better for a drag racing launch.
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Old 08-23-2000, 03:08 PM   #2
Jude DeMeis
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Exclamation

Launching any car very quickly is a relatively stressing procedure no matter what your technique is. Launching applies mechanical shock to all of the drivetrain components. Just be aware of the potential consequences - and the fact that the Subaru RS is a consumer street car and the drivetrain is not really engineered for that kind of use.
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Old 08-23-2000, 03:24 PM   #3
adam99rs
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My technique (netted very good 60 foots my last time at the track: take revs to 4500, bring clutch to friction point, dump clutch, bury the gas. Tranny can handle this jsut fine, as can the rear (my original rear netted me 60 foot time in the mid 1.6's-1.7's, and its not even LSD)...it's the clutch that will suffer the most.....but who cares, they are easy to replace (as is the tranny for that matter, they just cost alot more)
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Old 08-23-2000, 07:31 PM   #4
munkis
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eyes, feet, quick but smooth. get it?
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Old 08-23-2000, 07:56 PM   #5
jImp
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Hey adam99rs, I tried that method and burned my clutch I guess practice makes perfect.
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Old 08-24-2000, 01:04 AM   #6
subaruwrx
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03 1996 Impreza Wa
Soon to be a v3 STI

Question Good launches

Hello,
I was wondering how people launch their cars in drag race settings. I am afraid of breaking something. The way i see it, is that if i drop the clutch at high RPM's, somethings got to slip. If the tires don't, soemthing important might. Idont want to break diffs or synchros, but i want some good launches. Any advice would be appreciated.
--Adam
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Old 08-24-2000, 01:15 AM   #7
Fred Zaplitny
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Wrong forum.
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Old 08-24-2000, 01:17 AM   #8
8Complex

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Usually when I dump from high rpm's the car squats real good and the fronts slip because of the rear LSD. I believe the fronts slip and the center diff slips a little. The biggest problem with launching like that is the bogging down you get since the car isn't powerful enough to keep the tires spinning. *shrug*
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Old 08-24-2000, 01:17 AM   #9
8Complex

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Doh, didn't even realize I was in this forum.
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Old 08-24-2000, 12:27 PM   #10
adam99rs
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burned as in blew it, or as in glazed in and it slippd..if thats the case, yo didn't release fast enough, or your clutch is previously glazed.....
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Old 08-24-2000, 12:45 PM   #11
NightmareOnSubySt
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I'm with Jude on this one! If your Suby is your daily driver and you don't have $$$ sitting in the "Fix My Suby" account, then be careful at the drags! True, clutches are the least expensive of the driveline components and easy to change, however once you put in that ACT clutch, the next breakable components cost a LOT of $$$ and down time. Just a word of caution from someone who has seen it happen to a friend.
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