14.83's at the track any advice?
04-27-2008, 05:41 PM
#21
Originally Posted by wills2k106,Apr 27 2008, 04:02 PM
Think of a tire like a basketball. The more air pressure you have in it the higher the ball will bounce, the same is true of wheel hop and tires. I think 1 psi is worth 10 lb/inch of spring rate, but don't quote me on that. Raising the pressures on a car with wheel hop will just exaggerate the problem.
04-27-2008, 07:02 PM
#24
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Ok well when I had a problem with wheel hop I tried pulling away like you pull away from a red light jut to get a clean pass. When I got to about 6500 rpms I got terrible wheel hop. So there was no dumping of the clutch and I had the same problem.
04-28-2008, 09:07 AM
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Originally Posted by Francesco,Apr 26 2008, 10:43 AM
Forget drag racing and start auto x'ing and tracking 
s2000 isn't made to hit anything better than 13.9's out of the box.
s2000 isn't made to hit anything better than 13.9's out of the box.
plus the best time ive heard of is a 13.6... your doing serious damage to your dif by launching like that... the next thread ill see is "my dif shattered into a million pieces"
04-28-2008, 04:05 PM
#26
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so dont launch high cause you'll break the diff but launch high cause you wont get a better time... egh.... i'll break it for fun... hell its the cost of playing the game!
04-28-2008, 04:12 PM
#27
i suggest if you are going to race like this that you launch high but slip the clutch out instead of simply releasing it. this should go a long way in making sure you dont blow the diff too quickly
04-28-2008, 04:26 PM
#28
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once i get this time once im done... i dont even want to race like that haha. I just need to show my buddys crx up really bad thats all
they do make aftermarket differentials dont they??? how they hold up for autoX or is it not smart to upgrade when your doing both track and autoX? with auto x as your main focus of course.
ALSO
im guessing the advice is rev it up to about 6 6.5 and slowly let go of the clutch while gassing it?
let me know about clutch release process because im going to the track tommorow and im only looking for one good solid 13.9-14.5 run.
they do make aftermarket differentials dont they??? how they hold up for autoX or is it not smart to upgrade when your doing both track and autoX? with auto x as your main focus of course.
ALSO
im guessing the advice is rev it up to about 6 6.5 and slowly let go of the clutch while gassing it?
let me know about clutch release process because im going to the track tommorow and im only looking for one good solid 13.9-14.5 run.
04-28-2008, 07:20 PM
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http://www.youtube.com/watch?v=Thx27l0QWFQ
I have only dragged the car twice, both times at Englishtown at a test and tune before the NHRA national event. The track was in pretty good shape and it was cold (high 40s) first was a 14.4 with the launch at around 4, and a 13.99? at 102 leaving at what I think was 6700. I think 6700 might have been too much, the car definitely had more in it on that day but I didn't want to abuse it anymore. The video above isn't me but it is similar to how I launched on the second run.
I am not a mechanical engineer but in my experience at the track, drag strip in particular, spinning the tires causes much less wear and tear on parts than either dragging the clutch or a dead hook. Dragging the clutch puts unnecessary heat in the clutch and can create further slippage down track. The dead hook is with no wheel spin and maximum forward acceleration where I see the most parts break. When you are trying to put down alot of power in a hurry something has to give, I would rather it be the tires than the clutch, driveshaft or diff. How many people break parts on the burnout? Now I don't recommend launching like this all the time but once or twice can't really be the end of the world. I have gone 20,000 miles since the trip to the strip, and I have no diff problems.
I have only dragged the car twice, both times at Englishtown at a test and tune before the NHRA national event. The track was in pretty good shape and it was cold (high 40s) first was a 14.4 with the launch at around 4, and a 13.99? at 102 leaving at what I think was 6700. I think 6700 might have been too much, the car definitely had more in it on that day but I didn't want to abuse it anymore. The video above isn't me but it is similar to how I launched on the second run.
I am not a mechanical engineer but in my experience at the track, drag strip in particular, spinning the tires causes much less wear and tear on parts than either dragging the clutch or a dead hook. Dragging the clutch puts unnecessary heat in the clutch and can create further slippage down track. The dead hook is with no wheel spin and maximum forward acceleration where I see the most parts break. When you are trying to put down alot of power in a hurry something has to give, I would rather it be the tires than the clutch, driveshaft or diff. How many people break parts on the burnout? Now I don't recommend launching like this all the time but once or twice can't really be the end of the world. I have gone 20,000 miles since the trip to the strip, and I have no diff problems.