Launching technique

[esbolico]

i have read about different launching techniques. What is your launching technique and for what kind of car? Thank you.

[pitfield]

PSM off, 4,000 rpm, drop clutch, plant throttle, 997 C2S

[ViperASR]

Launching techniques will vary from car to car and driver to driver. In my Honda Civic SI I tend to buzz the motor to about 5500 rpm and drop the clutch with the front tires gently spinning while feathering the throtte to get the best result (this is only done while autocrossing because I know it is bad for the clutch). However, on my Porsche 944 I used about 3500 rpm and drop the clutch and plant the throttle because it is rear wheel drive and rear tranny so all the weight of the car shifts to the back to help the rear tires grip more. Launching all matters on what type of car you have and how mean you are willing to be to the car.

[RC45]

Hehehe - I like the "drop clutch and mash gas" method you guys talk of..

With any significant amount of power, all that does is result is an impressive cloud of tire smoke but not very quick forward progress.

My fave technique in the Z06 is Traction Control off with Active Handling on.. other wise known as Competitive Mode.

Feed in about 2500rpm and then gently apply full throttle as you feather the clutch and throttle peddling and steering your way through the inevitable wheelspin and then keeping the revs at or near the 6600rpm redline, click off quick upshifts making sure the revs do not drop out of the sweet spot... try not to let revs dip below 5000 at each up shift.

With careful and judicious use of the throttle you can click off very low 4s 0-60mph times all day long

Heres an instructional video..

http://www.jabbasworld.net/dload.php...le&file_id=537

[rave426]

My 2004 Chevy Imapla........

Be sure the radio and A/C are off, so that u wont be robbed of any electical or mechanical power and be able to use the full potention of the 3.4L economy V6.

Imagine oil temp guage is actually your tachometer (if your motor warm, you should be stuck at an imaginary ~3200 rpm.

Shift to drive while depressing the brake.
DRY

Non-wearing brake and drivetrain techniqe

Have left foot on brake, just to the point to where the car is stopped.
Gently apply just enough gas to where u can hear the engine purring.
Abruputly and simultaneously plant the throttle and relase the brakes.

Dont let up until the limited top speed of around 110 mph.

WET

Same as before except dont plant the throttle. Depress it about 1/4 to 1/2 (enought to spin the wheels slightly and depending on conditions) of the distance to the floor and after about a second or two PLANT IT.

Easy!! - My car sucks. :roll:

[Shinigami]

In a car like an S2000 with relatively low torque numbers and weight, you can usually rev her up to 6000rpm with little or no wheelspin when you drop the clutch...

In ym SLK, it's the usual brake-torquing technique, and it only really lets you rev up to around 3000rpm when holding the brake down. However, even if you don't brake torque, there's wheelspin due to the amount of torque on hand, and the tires which are just not wide enough (A big critizism of the SLK).

[ViperASR]

Originally Posted by RC45 Hehehe - I like the "drop clutch and mash gas" method you guys talk of..

Its called I only have about 200 hp, as opposed to ur 405 in the Z06. Oh, and only 160 in the SI....

[RC45]

Originally Posted by ViperASR Originally Posted by RC45 Hehehe - I like the "drop clutch and mash gas" method you guys talk of.. Its called I only have about 200 hp, as opposed to ur 405 in the Z06. Oh, and only 160 in the SI....

485bhp..

[rave426]

Yeah i droped the clutch at 6000rpm on an S2000 one time and the damn tires just chirped. It was a test drive so I was to scared to drop it from 8000 rpm and take a chance on demolishing a worn clutch (used car). It was tempting though.

[RC45]

turbo diesel? as in a turbo diesel public transport passenger bus?

[novass]

My 63 Nova is pretty easy in the right conditions since its an auto. Stand on the brake, build to 3200, let go of brake and hammer the throttle. Even with about 415hp, the car has surprisingly good traction and wont spin the tires unless im on concrete or a wet surface.

The Audi is a different story. Its not fast, little torque, turbo and AWD so it takes a special balance of clutch vs. gas to get a good start. Problem here isnt traction but the clutch as that will spin a lot sooner than the wheels.

[esbolico]

thank you, it is always interesting to know about how other people drive
What about semiautomatic transmissions like dsg, triptronic, ..... thank you

[RC45]

Originally Posted by brembo Originally Posted by RC45 Hehehe - I like the "drop clutch and mash gas" method you guys talk of.. With any significant amount of power, all that does is result is an impressive cloud of tire smoke but not very quick forward progress. With careful and judicious use of the throttle you can click off very low 4s 0-60mph times all day long hmmmm this doesnt apply in quattro county...... here you just do as I will now tell you and you will click off low 4s all day long..... My method Audi RS2: Place foot on accelerator, push it until you hit the floor,and the engine hits the rev limiter then remove your left foot from the clutch...than its just to hang on and shift to next gear a sec or two later,then third and so on.... You will notice some tire loosing grip from tarmac when you remove left foot from clutch in first gear, this will also be noticed when you slip it into second, by the time you hit third you are moving fast past 120 and its just to shift thru the gears.... No clutch slipping just you being launched while the car does his thing..... ahhh the joy of quattro buildt for abuse....

So you are saying that a stock audi quattro will be able to withstand repeated full throttle clutch drops with out any ill effects?

I bet you I could put an audi quattro in the shop for clutch/tranny/diff repairs within an hour

[TNT]

In my 97 Ranger, i hold the rpms around 2,000 and i feel for the clutch to start biting. then i let out the clutch and go WOT, and 9 times out of 10 if timed correctly i have a very small bit of tire churp and i am off. since i don't have a limited slip dif. i need to time it just right or i am just spinning.

[nthfinity]

Originally Posted by TNT In my 97 Ranger, i hold the rpms around 2,000 and i feel for the clutch to start biting. then i let out the clutch and go WOT, and 9 times out of 10 if timed correctly i have a very small bit of tire churp and i am off. since i don't have a limited slip dif. i need to time it just right or i am just spinning.

you arent launching properly

even if its just single wheelspin...