video of a launch

[Jonas240sx]

can somebody video tape a good launch video...preferably in car and so that i can be able to see the tach... i have a 93 with LSD N1 and injen cai...i launch at around 3500 spin tires for tid bit untill about 4k for the power band...but sometimes if i launch at lets say 3k it will spin tires for a little time and grab on really quick but the rpm will drop like a mutha to around 2k...

[red240ne]

I say screw the KA, launch at redline. Maybe I'll get a vid tomorrow, even though I have an automatic. I'll just do a neutral drop, and send my transmission to the grave where it belongs, so I can have an excuse to get my S14 SR.

[sledgehammer]

Sounds to me like, sometimes you slip the clutch well and get a nice launch and other times you aren't as focused and you let the clutch out to quickly and you bog the car. Keep practicing releasing the clutch smoothly and eventually you'll learn your friction point perfectly and be able to launch well everytime.

[themadscientist]

that's because you are bogging as soon as the tires grab. You have to experiment with you own car, no two cars have the same "perfect RPM" for launches. I had to cut loose my NA CA18 at at least 7000 RPM to prevent it from falling flat on it's face when the tires hooked up. Why? I had very little torque in that engine, a lightweight fltwheel, 4.10 rear LSD and sticky 235/50/16s. If you tried that in your car with the likely better torque you would win a burnout contest but turn crappy times. Have a freind videotape your car launching from the back and side, examine your skid marks to determine the best tire pressure and suspension settings and continue to watch that tach until you have the right combo for your car.

[1bad180sx]

Sound advice to follow.

In my old 91 240sx SE I would launch from 3400 every time. It was the perfect point with a little slip of the clutch... I would kill people off the line regularly.

[SilviaLuvr]

yeah did the same thing when i raced my bos rsx. i set mine at around 3000- 3200RPMS adn i killed him off the line and then he caught up to me a passed me. (that engine suxed anyway. thank god i got a new 1

[sledgehammer]

hey SilviaLuvr, what wheels are those on that 300zx in your sig???