REVscene Motorsports RS Motorsports by The Speed Syndicate
RS Race Team
Pitt Meadows & Mission Raceway. Organize Race Pre-meets, post Racing related event Pics and discussion. In collaboration with The Speed Syndicate, Official race events presenter. [Solicitation of Professional Racing Events Allowed] |
 | 
12-02-2009, 09:21 PM
|
#1 | | OMGWTFBBQ is a common word I say everyday
Join Date: Nov 2005 Location: Vancouver
Posts: 6,044
Thanked 315 Times in 149 Posts
Failed 53 Times in 33 Posts
| Drag Racing Launches
I'm having trouble launching my car properly
any tips?
ihave a 6MT G35
stock tires 245/45/18 Michelin Pilot Sports
can't seem to stop the wheel spin, regardless of how low i launch the car in the rpm range.
or possible i'm slipping it the wrong way.
how much is it it my driving, and how little of it is the tires fault?
i'm consistently getting bad 0-60 times.
any help would be great, thanks
__________________ 1996 Honda Accord 1995 Nissan 240sx 2004 Infiniti G35 2005 Honda Jazz BuySell Feedback Quote: |
"It's called Sex Panther by Odeon. It's illegal in nine countries... Yep, it's made with bits of real panther, so you know it's good ... They've done studies, you know. 60% of the time it works, every time. "
| | 
|  | |
12-04-2009, 08:04 AM
|
#2 | | RS.net, helping ugly ppl have sex since 2001
Join Date: Sep 2008 Location: Vancouver
Posts: 8,858
Thanked 2,420 Times in 669 Posts
Failed 530 Times in 136 Posts
|
maybe because its cold?
__________________
2014 Honda Civic Si | |
| | |
12-04-2009, 06:07 PM
|
#3 | | racing & tech mod.
Join Date: May 2004 Location: Vancouver
Posts: 4,034
Thanked 507 Times in 188 Posts
Failed 22 Times in 12 Posts
|
If you want a good launch, you need traction. If the ground is cold, wet, or dusty, you will have less traction.
If your tires are narrow, cold, hard, or worn, you will have less traction. (tires get harder as they wear out, and the rubber compound at the surface is softer than the rubber near the chords of the tire.)
Suspension can also affect wheelspin: A suspension that is too stiff will not allow weight transfer to the rear of the vehicle, causing the rear wheels to have no weight over them, allowing them to spin easily.
As far as your foot goes, you need to feather the throttle just enough to get a little spin before you are supposed to launch, so that the car starts to move forward right when the light changes, without excessive wheel spin.
All cars have a different power train, so it might take a while to figure out if you can get away with a low rpm clutch drop, and let the power build up over the rpms with very little wheel spin - OR - if you need do drop the clutch at a higher RPM to stay in the power band, and make due with a bit more wheel spin.
| |
| | |
12-21-2009, 12:39 PM
|
#4 | | OMGWTFBBQ is a common word I say everyday
Join Date: Nov 2005 Location: Vancouver
Posts: 6,044
Thanked 315 Times in 149 Posts
Failed 53 Times in 33 Posts
|
I'll definitely try that. As for switching to low profile tires will that adversely affect ny times more because of the lower sidewall flex? My plan is to run some 255/40/19's in the rear next season with some UHP summer tires
I also read to not fully release the throttle during shifts, as a normal shift would be
1.Fully Release throttle
2.Engage clutch
3.Change gears
4.Release clutch
5.Engage throttle
Now I read from a site I should change to
1.Engage clutch, whilst holding down throttle
2.Release throttle
3.Change gears
4.re-engage throttle
5. Release clutch
Its a slightly less painful form of speed shifting
What do you guys think? Posted via RS Mobile | |
| | |
12-21-2009, 12:48 PM
|
#5 | | racing & tech mod.
Join Date: May 2004 Location: Vancouver
Posts: 4,034
Thanked 507 Times in 188 Posts
Failed 22 Times in 12 Posts
|
uh, what do you think is going to happen if you keep it floored while you push in the clutch?
it's either going to over-rev or bounce off the rev-limiter.
The way you do it in your first explanation is fine, except change 'fully release throttle' to 'partially release throttle' and you're set.
| |
| | |
12-21-2009, 08:04 PM
|
#6 | | OMGWTFBBQ is a common word I say everyday
Join Date: Nov 2005 Location: Vancouver
Posts: 6,044
Thanked 315 Times in 149 Posts
Failed 53 Times in 33 Posts
|
^ you're actually right, i misquoted what the website said.
during clutch engagement i release the throttle half way.
it's going to take some time for muscle memory to kick in.
__________________ 1996 Honda Accord 1995 Nissan 240sx 2004 Infiniti G35 2005 Honda Jazz BuySell Feedback Quote: |
"It's called Sex Panther by Odeon. It's illegal in nine countries... Yep, it's made with bits of real panther, so you know it's good ... They've done studies, you know. 60% of the time it works, every time. "
| | |
| | |
12-23-2009, 12:04 PM
|
#7 | | OMGWTFBBQ is a common word I say everyday
Join Date: Nov 2005 Location: Vancouver
Posts: 6,044
Thanked 315 Times in 149 Posts
Failed 53 Times in 33 Posts
| Quote:
Originally Posted by shenmecar  maybe because its cold? | it was in September when i was drag racing, not recently
__________________ 1996 Honda Accord 1995 Nissan 240sx 2004 Infiniti G35 2005 Honda Jazz BuySell Feedback Quote: |
"It's called Sex Panther by Odeon. It's illegal in nine countries... Yep, it's made with bits of real panther, so you know it's good ... They've done studies, you know. 60% of the time it works, every time. "
| | |
| | |
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts
HTML code is Off
| | |
All times are GMT -8. The time now is 05:35 AM.
|
You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
The banners on the left side and below do not show for registered users!
