Drag Racing Tech - Launching an m6 at the track?

I am going to the track for the first time friday, and I will be on street tires. What rpm should I launch from, or should I just easy off the line like at a stop light. What is the best way to launch thanks for your imput!

Mike-Z

Best advise I can.I do best when slipping the clutch out the hole. I've got Drag Radials and if I try to pop the clutch off the line it either spins bad or spins 5 or 10 feet and boggs. Can't seem to find the perfect rpm. I've got a best of 1.90 sixty foot buy slipping the clutch, also this time could have been better as my stock clutch has about 25K on it now and won't grab like it used to. When I first got it, I would slip it out and when it engaged it would spin about 10 feet or so on a perfect launch. BTW, the car is stock with no susp. mods. As far as how much to slip it, its something you just have to learn. It's different for every track and tires.

[quote]Originally posted by Judd:
<strong>Best advise I can.I do best when slipping the clutch out the hole. I've got Drag Radials and if I try to pop the clutch off the line it either spins bad or spins 5 or 10 feet and boggs. Can't seem to find the perfect rpm. I've got a best of 1.90 sixty foot buy slipping the clutch, also this time could have been better as my stock clutch has about 25K on it now and won't grab like it used to. When I first got it, I would slip it out and when it engaged it would spin about 10 feet or so on a perfect launch. BTW, the car is stock with no susp. mods. As far as how much to slip it, its something you just have to learn. It's different for every track and tires.</strong><hr></blockquote>When you talk about slipping the clutch are you talking about releasing the clutch until it engages, and then slowly release it while pressing the gas?

Mike-Z

I used to get fairly good launches on F1s by reving to about 1800 and dumping the clutch. At another track I could rev to about 2200 so it's really dependent on the track, your clutch, etc.
I never had much luck slipping the clutch except for making that stinky clutch smell <img src="images/icons/smile.gif" border="0">
Jim

Slipping the clutch means to rev it up to a certain RPM and letting out the clutch pedal smoothly but quickly....NOT DUMPING IT...but basically as soon as you feel the tires grab and not break loose you hammer it... <img src="images/icons/smile.gif" border="0">

[quote]Originally posted by BIGBOS:
<strong>Slipping the clutch means to rev it up to a certain RPM and letting out the clutch pedal smoothly but quickly....NOT DUMPING IT...but basically as soon as you feel the tires grab and not break loose you hammer it... <img src="images/icons/smile.gif" border="0"> </strong><hr></blockquote>Thanks BIGBOS for clear that up for me! <img src="images/icons/smile.gif" border="0">

Mike-Z

On Nitoo 555R's 3000-3200RPM seems to work fine.. I dump the clutch.. but that may explain my shity 60' LOL <img src="graemlins/burnout.gif" border="0" alt="[Burnout]" />

[quote]Originally posted by Mr. Speed:
<strong>When you talk about slipping the clutch are you talking about releasing the clutch until it engages, and then slowly release it while pressing the gas?

Mike-Z</strong><hr></blockquote>

Pretty much thats it, but don't do too much slippin or you will heat the clutch up. With Drag Radials and a good track{VHT sprayed down} I basicly just floor it and let out the clutch kinda like you would when leaving a uphill redlight casually. On regular radials on a crappy track I have to do a little more slipping, sometimes I have to let it slip about half-way through 1st. WARNING, if you get to aggresive while slipping it will keep on slipping till it cools down. Maybe I'm lucky but I've got somewere around a hundred passes and 25 K miles,still on the stock clutch. I'm still stock on the motor though.

Yep

i personally would rather spin my tires than my clutch they are easier to replace my .02

I have an upgraded clutch therefore I want to hook... <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" />

I was going to post this same topic. I have an M6 and I loose about .4 because of my launch. My cars best is 13.4, but my best in the car is 13.8. My 60' times are horrible. My best one so far is 2.23.

I try to get advice from the guys in our club but all they make me is nervous. I get to the line and usually burn the heck out of the clutch and then it sticks.

We are having a Tulsa vs OKC Grudge Match this weekend. I was hoping to get at least a 13.5 so I am competitive. Any other launching advice.

feather the clutch...thats what I have to do now

running 4.10's with a street tire.... <img src="images/icons/shocked.gif" border="0">

<img src="images/icons/frown.gif" border="0">

I'm not one to be giving advise, I've only been to the track once and my 60ft's sucked. I was leaving the line at 2000 with a quick clutch release (like Mike 00'SS was saying) . It didn't net me any great 60' times, but I beat a '98 Cobra while I was there <img src="images/icons/grin.gif" border="0"> (timeslip link is in the sig)

[quote]Originally posted by 8URTANG:
<strong> but I beat a '98 Cobra while I was there <img src="images/icons/grin.gif" border="0"> (timeslip link is in the sig)</strong><hr></blockquote>


I beat a 2002 Mustang GT. It was really funny. Here this macho guy in his new GT gets his butt handed to him by a girl driving a stock Z28.

He had me off the line, but I was determined not to loose to a Mustang. <img src="images/icons/tongue.gif" border="0"> I was very happy when I got that time slip <img src="images/icons/grin.gif" border="0">
<img src="images/icons/tongue.gif" border="0">

[quote]Originally posted by ReganZ28:
<strong>
a girl driving a stock Z28. </strong><hr></blockquote>

Why don't we have girls in Z's around here, it just isn't fair I tell ya <img src="images/icons/frown.gif" border="0">

There was a girl around my area with a z...she got whacked and we made 50 bucks... <img src="images/icons/smile.gif" border="0">

She was a $hit talker and we put her in her place...

lol