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Old 06-21-2009, 08:39 PM   #15
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Took the car out to the drag strip again today. I did only two passes, but managed to put down a 13,28 @ 106,9 mph.
Started with 3000 rpms and eased out the clutch. The start was good, but I experienced some wheel hop when shifting to second! 60' time dropped from 2,8 to 2,16. The second pass was poor, just spun the tires off the line and also forgot to turn off the traction control. It seems that one can get quite som wheelspin before the ECM catches on and turns off the power!?
Anyhow, thanks for the advices and it seems like patience does the trick!
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Old 06-21-2009, 09:03 PM   #16
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Quote:
Originally Posted by Foglin View Post
Took the car out to the drag strip again today. I did only two passes, but managed to put down a 13,28 @ 106,9 mph.
Started with 3000 rpms and eased out the clutch. The start was good, but I experienced some wheel hop when shifting to second! 60' time dropped from 2,8 to 2,16. The second pass was poor, just spun the tires off the line and also forgot to turn off the traction control. It seems that one can get quite som wheelspin before the ECM catches on and turns off the power!?
Anyhow, thanks for the advices and it seems like patience does the trick!
sweet! thats awesome to hear.
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Old 07-04-2009, 12:20 AM   #17
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Read what's on this link; best info on 1/4 mile racing as well as maintenance I've ever read.

http://rangeracceleration.com/
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Old 07-04-2009, 03:06 PM   #18
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Use Launch Control. You should be able to match or beat the factory rating.

Here's a vid on the Vette LC. Huge difference between a DIY launch and using LC.

Plus it's easier on the drive train.
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Old 07-04-2009, 08:47 PM   #19
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Originally Posted by TomServo View Post
Use Launch Control. You should be able to match or beat the factory rating.

Here's a vid on the Vette LC. Huge difference between a DIY launch and using LC.

Plus it's easier on the drive train.

You will go slower with launch control
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Old 07-20-2009, 06:37 PM   #20
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Bump for all of you that have gotten your launches dialed in. What have you guys figured out? I know that it will vary based on conditions but looking for some starting points. I'm still only half way to 1500miles so not ready to launch it yet but can't wait to get it out to the track (Orlando Speed World).
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Old 07-27-2009, 01:16 AM   #21
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Just coming on to say don`t use launch control if you want to go fast. I was using it when I went to the track because it was my first time ever, and I didn`t want to wreck anything.

I was getting so much wheelspin that on my last run I let the clutch out after the second yellow light came on and I still didn`t red light.

I am gonna try a DIY at around 2500 or 3000 RPMs and see what happens next time.
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Old 07-27-2009, 02:29 PM   #22
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Times with launch control?
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Old 08-04-2009, 05:08 PM   #23
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Originally Posted by djsnoflake View Post
Just coming on to say don`t use launch control if you want to go fast. I was using it when I went to the track because it was my first time ever, and I didn`t want to wreck anything.

I was getting so much wheelspin that on my last run I let the clutch out after the second yellow light came on and I still didn`t red light.

I am gonna try a DIY at around 2500 or 3000 RPMs and see what happens next time.
Pretty much what I figured. I've just done some empty road launches and noticed that LC = spin. I haven't done it enough to get dialed in or anything but it seems ~3000 seems to be best. But I've still been using comp mode. I guess the fastest way would be to do it yourself. I gotta get the hang of controlling the wheelspin because the one time I launched with no TC at all I did it at 2k and just floored it and didn't hook up. Maybe I'll get out to the track soon.
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Old 08-05-2009, 03:04 PM   #24
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Don't use comp mode. It dumps too much energy, 4,200 rpm is too high. I believe sooner or later it will break something in the drive train. The ABS kicking in to limit wheel spin at the same time can't be good either.

Hold traction/comp mode button down for 7 seconds and turn both off. Launch between 2500 and 3000 rpms. You need some wheel spin to get the motor in the power band. Try to keep rpms between 3500 to 4000 once the tires start spinning. You probably want the rpms up around 4500 when the tires stop spinning.

Drive it out of the hole. Keep rpm constant and let clutch out and slowly give it gas - like taking off from a stop. Don't pop the clutch but don't slip it either. Caution: slipping the clutch will burn it up. Don't stomp the gas but depress fast enough to to keep rpms up in power band. You can let off half way on gas then get back in it if you have too much wheel spin. This is called pedaling if you do it more than once.

Practice!
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Old 08-07-2009, 01:29 PM   #25
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Here's what I did.

Quote:
Originally Posted by Foglin View Post
Tried just what you described, otherwise all as "described"! But, had very serious wheelspin (and some wheel hop!) off the line. I tried anything between 1000 and 2000 as starting rpms. 2000 is too much for street tires and 1000 makes it bog! Once it gets up and goes it's a no brainer! chirps 1-2 shift as well as 2-3 shift!
Should I start as Granma? Just babying it off the line, as in any street corner? Or, should I go and buy Drag radials, or worst case: get a driving course
Guess I need more practice



But its fun
Just went to Bandimere for the first time weds.

First off make sure traction control And stability track are off. I didn't take off stability track off the 1st 2 times I ran but did the 3rd run and improved by 1.43 sec @ 7mph

Ran the tac to 3000 and controlled the clutch release instead of popping it. Once it hooked I floored it.

4000 and popping clutch is too much tire spin

I know the times could be better but I'm new at this. Just more practice needed.
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Old 08-09-2009, 12:29 AM   #26
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what rpm??

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Originally Posted by nuptualnemesis View Post
Don't use comp mode. It dumps too much energy, 4,200 rpm is too high. I believe sooner or later it will break something in the drive train. The ABS kicking in to limit wheel spin at the same time can't be good either.

Hold traction/comp mode button down for 7 seconds and turn both off. Launch between 2500 and 3000 rpms. You need some wheel spin to get the motor in the power band. Try to keep rpms between 3500 to 4000 once the tires start spinning. You probably want the rpms up around 4500 when the tires stop spinning.

Drive it out of the hole. Keep rpm constant and let clutch out and slowly give it gas - like taking off from a stop. Don't pop the clutch but don't slip it either. Caution: slipping the clutch will burn it up. Don't stomp the gas but depress fast enough to to keep rpms up in power band. You can let off half way on gas then get back in it if you have too much wheel spin. This is called pedaling if you do it more than once.

Practice!
Are you saying to only run the rpm's up to 3500/4000 for every gear or just off the line. Every place I've gone to has said run the rpm's up to just below the rev limiter,approximately 6000>6600
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Old 08-09-2009, 08:07 AM   #27
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rpm's

Quote:
Originally Posted by tom692010 View Post
Are you saying to only run the rpm's up to 3500/4000 for every gear or just off the line. Every place I've gone to has said run the rpm's up to just below the rev limiter,approximately 6000>6600
No he meant just for launching.
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Old 08-09-2009, 08:25 AM   #28
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Any advice on the V6 manual?
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