Best RPM to Launch at for 1/4 MT?

mspeasl · 07-25-2010, 01:35 PM

Quote:

Originally Posted by DrewDong

Hey everyone, figured I would try to save my tires some tread and see what everyone else thought about what RPM is the best to rev to when launching with a manual transmission car for the quarter mile. Will be taking my ride to the tracks soon, and don't want to look like a fool with my car all bogging down on me during my launch lol. I currently have a nismo with the 19inch rim/tire setup. My last car i had, (toyo celica gts), I had to rev it up to like 5500 rpm to get a great launch. I was a bit reckless back then hehe. I'm sure this car is a lot different

I've been a Dragracer for 50 years and from my experience with street tires on the strip is as follows. In the 'Z' bring the RPM's up to 4500 and release the clutch about half way(you will develop a feel) holding the RPM's at 4500. As the car moves forward apply more gas and more clutch until it's time to change gears. Remember for the quickest times (Lower E.T.) change gears with the power on (WOT).

FastJew · 10-26-2010, 09:56 PM

Quote:

Originally Posted by mspeasl

I've been a Dragracer for 50 years and from my experience with street tires on the strip is as follows. In the 'Z' bring the RPM's up to 4500 and release the clutch about half way(you will develop a feel) holding the RPM's at 4500. As the car moves forward apply more gas and more clutch until it's time to change gears. Remember for the quickest times (Lower E.T.) change gears with the power on (WOT).

This has produced the best results for me. I come from AWD cars where wheel spin is not really an option (unless highly modded). Slip the clutch and not the tires and with a little practice at a 4500rpm launch you can get 1.9 60's on street tires.

I don't recommend the speed shifting above and just have to mention that launching this way will take a toll on your clutch after repeated launches...I run at an 1/8th mile track and turn an 8.71 with a 1.96 60'. Pretty sure a new clutch is in my future after about 25 runs total over the past year.

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