Any tips for a good launch?

nodestiny · Post by **nodestiny** » Thu Aug 04, 2005 5:24 pm

I cant seem to get the launch down right. Whats the best PSI on the tires for an overall best run (im sure tire dependent, but an average?)

Launch at what RPM? Feather or harsh on the clutch on launch? Just any ideas would be great

minnimert · Post by **minnimert** » Thu Aug 04, 2005 7:43 pm

Slicks

Seriously tho I slip my clutch a little quicker than normal driving, at a higher rpm around 3200-3400rpm. Then once I get rolling I mash the gas as quickly as possible without getting too much wheel hop.
Launching on street tires with a manual is a PIA.

rt_neon04 · Post by **rt_neon04** » Sat Jan 07, 2006 8:45 pm

bring the front tire pressure down to 20 psi and the rear to 35psi..when ur ready to pull up just spin the tires once or twice so u whip the dirt and rocks u have on them..bring the rpm up to 3500 and right when the 3rd yellow light is about to turn to green pop the clutch and ur off..POWER SHIFT 1st-2nd at 6600rpm..better yet power shift all gears 1-4

J-Villa · Post by **J-Villa** » Sun Jan 08, 2006 12:49 am

your in 4th in the 1/4?? and your 100% stock? lol

tamadrumr88 · Post by **tamadrumr88** » Sun Jan 08, 2006 10:35 am

yeah you shouldnt be hitting 4th. i wouldnt advise power shifting though, that puts alot of stress on everything!

i dropped the front tire pressure to about 22psi HOT. slicks are great for traction but put alot of stress on our very weak stock differential pins.

i found that when you flat out drop the clutch between 3500-4000 its the perfect amount ow wheel spin and traction. if anyone wants to host a video ill gladly demonstrate against my brothers '99.5 jetta vr6

rt_neon04 · Post by **rt_neon04** » Sun Jan 08, 2006 11:52 pm

i powershift 1st-4th gears..i finish the 1/4 right when i have to shift from 3rd to 4th...

wats wrong with finishing on the beginning of 4th gear...

J-Villa · Post by **J-Villa** » Sun Jan 08, 2006 11:57 pm

so you hit 90 in the 1/4?

Post by **racer12306** » Mon Jan 09, 2006 12:39 am

pump the back tires up to max psi on the tire. i agree with dumping the clutch at 3500 - 4000. you want the tires to spin a little on low power cars, otherwise it will bog. i use the clutch when i shift. it takes some practice but after a while you can clutch shift really fast. the rpms only drop 500 - 1000 rpm when i shift, maybe less i havent watched in a while.

when i ran 20x6's on my neon, i shifted into 4th at the end and the car hated it. i left it in third on the next pass and it bounced of the rev limiter in the traps and ran two tenths quicker than the last pass.

rt_neon04 · Post by **rt_neon04** » Mon Jan 09, 2006 3:45 pm

E3EsXt02 wrote:so you hit 90 in the 1/4?

yea 15.7 at 88mph

03sxt · Post by **03sxt** » Mon Jan 09, 2006 4:06 pm

rt_neon04 wrote:
E3EsXt02 wrote:so you hit 90 in the 1/4?
yea 15.7 at 88mph

Post by **racer12306** » Mon Jan 09, 2006 4:17 pm

88 mph < 90 mph

you are only hurting yourself shifting into fourth

rt_neon04 · Post by **rt_neon04** » Mon Jan 09, 2006 10:27 pm

hurting myself by how...slower times..

tooslow · Post by **tooslow** » Tue Jan 10, 2006 10:22 am

racer12306 wrote:88 mph < 90 mph

you are only hurting yourself shifting into fourth

I hit revlimiter if I don't shift too 4th and I onlly get up too 83ish in 3rd

rt_neon04 · Post by **rt_neon04** » Tue Jan 10, 2006 11:12 am

tooslow wrote:
racer12306 wrote:88 mph < 90 mph

you are only hurting yourself shifting into fourth
I hit revlimiter if I don't shift too 4th and I onlly get up too 83ish in 3rd

same thing here..around 85 i hit 3rd limiter and have to shift to 4th..i dont knw wants wrong with running faster mph and goin threw the gears faster...

Post by **racer12306** » Tue Jan 10, 2006 11:55 am

my apologies, i didnt realize that there was that much of a difference between the r/ts and the sxts. on stock size tires i go through the traps at 85 mph at 5000 or 5500 or so. try staying in third for one pass and see what happens.

rt_neon04 · Post by **rt_neon04** » Tue Jan 10, 2006 4:43 pm

ill have to find out....sometime this year when the track opens

unsuper man · Post by **unsuper man** » Wed Jan 11, 2006 4:44 pm

tamadrumr88 wrote:yeah you shouldnt be hitting 4th. i wouldnt advise power shifting though, that puts alot of stress on everything!

i dropped the front tire pressure to about 22psi HOT. slicks are great for traction but put alot of stress on our very weak stock differential pins.

i found that when you flat out drop the clutch between 3500-4000 its the perfect amount ow wheel spin and traction. if anyone wants to host a video ill gladly demonstrate against my brothers '99.5 jetta vr6

LMAOALMALMAOROLLERSKATESLMAOLMAO

3500-4000 clutch dump? i spin from a 30 roll if i mash the gas, let alone dump the cluch from a stop. and i have shit box 3.55

i cant imagine ANYONE sees good results form dumping the clutch.

best advice on launch? its call practice. think ricky gadson learned to launch his 1200whp superchager drag bike, by what he READ on the internet?

go out and try things, thats how u get better,

Louie · Post by **Louie** » Wed Jan 11, 2006 9:06 pm

with the 3.94 and stock wheels/tires i dropped the clutch at 4000 and bogged bad.

stepped it up to 4500 and still bogged for 1/2 a sec but it ran hard.

only spun the tires when i stepped it up to 5k.

so how you spin at a 30 roll with the 3.55 i cant figure out, because i cant do that on my 3.55 and even on my 3.94 i couldnt spin like that.

but with that said. everyone has different styles, different techniques, and different cars. so the only real way is for you to practice

tooslow · Post by **tooslow** » Thu Jan 12, 2006 10:21 am

just be really mean too your clutch do not dump it of the line you'l either bog real bad or give the people in stands a nice smoke show

Post by **racer12306** » Thu Jan 12, 2006 8:42 pm

tooslow wrote:just be really mean too your clutch do not dump it of the line you'l either bog real bad or give the people in stands a nice smoke show

not really. i would spin the tires but they would not smoke, except for one time but that was because someone dumped water on the track and no one noticed and it spun a lot on that run.

INVUJerry · Post by **INVUJerry** » Tue Jan 17, 2006 1:07 am

I think unsuperman spins at 30 cuz he's turbo. I think a dump from 3000 or 3500 is optimal, thats what I've been practicing. I don't have any times yet because the track is closed. Shift at 6500 in first, and about 6200 in 2nd and 3rd. Best thing is GOOD LUCK.

Dark-one · Post by **Dark-one** » Tue Feb 07, 2006 10:47 pm

powershifting=dead tranny

unsuper man · Post by **unsuper man** » Wed Feb 08, 2006 3:05 pm

Dark-one wrote:powershifting=dead tranny

coming from someone with an srt4 i hope your kidding, the tranny AND ecu were designed for "wot shifting". infact the ecu holds boost during clutch disenguagment so that theres no fall off when u get back into gear.

i use to power shift all the time whe i was n/a. now that im boosted its almost pointless.

last week i tired a 1st gear roll, rolled into throttl, got a SHIT load of spin, shifted into 2nd, and bounced the limiter a few times then calmed down. i went back out and look, probbaly layed down several hundered feet of tire marks. becuase for what ever reason, my stock 3.55 likes to spin both tires most all the time.

INVUJerry · Post by **INVUJerry** » Mon Feb 13, 2006 10:03 pm

Jesus, what tires do you have?

rt_neon04 · Post by **rt_neon04** » Thu Feb 16, 2006 11:04 pm

the stock good year eagle ls...or did u change them

nght18 · Post by **nght18** » Fri Feb 17, 2006 5:36 pm

to launch i just slip the clutch at 3000rpm, chirp a lil and i do the 1/4 in 3 gears. My 3rd redline about 93mph..and i trap a 15.7 @ 87mph. But i have a sxt so probably they have longer gears than the r/t or the sxt just get there slower

rt_neon04 · Post by **rt_neon04** » Fri Feb 17, 2006 6:16 pm

look even hgnt does the right time's...they keep telling me how do u finish the 1/4mile in the begining of 4th gear at 89 mph...

nght18 · Post by **nght18** » Fri Feb 17, 2006 10:24 pm

yeah the rt and sxt have different gearing..i hit 3 gear in the 1/4..and the r/t probably hit 4th. And about the tire pressure to run at the track...I filled my tire with nitrogen at 32psi on stock tires. I work at a dealer so when we got it they used me and some others to test it out. The car ride a lil smoother but thats it. I really dont think it make a differnece at the track. But most guys put like 20psi in the front and more in the back...I'll just stick to my 32psi which i found on the door jam. happy racing yall..O i just smoked a civic to tried me...he had and annoying exhaust lata

tamadrumr88 · Post by **tamadrumr88** » Fri Feb 17, 2006 11:17 pm

i still think 20psi in front and fill your rears to the max psi rating (44psi, 52psi, some go up to 60+psi, etc)

in theory, you want the most weight over the front (higher psi in rears) and the widest tire possible (to a certain extent, by dropping the tire pressure in the front the tire sags more and it gets wider at the base)

seisephiroth · Post by **seisephiroth** » Wed Mar 15, 2006 3:16 pm

newb question. when you say 3.55 and 3.94 what are you refering to?