Throttle Stop w/ 1 blade TB / roll RPM Q

[Lenny5160]

Originally Posted by Tom Goldman

With a small tire like that , shift on the stop . less likely to spin and you will get more MPH

Not saying that I disagree that he should shift on the stop, but I don't agree that it will result in more MPH.

I'm NA, but in both my S/ST and SC car I come off the stop in Low and shift downtrack on RPM. I lose little to no MPH doing this, and especially in SC I will out-MPH cars that have 200+ more horsepower than I do. It takes a lot of power and time to get the car moving in High gear.

Again, if I had a supercharged small tire car I'd be shifting on the stop, but it will cost you some MPH.

[Marc]

Originally Posted by Lenny5160

Not saying that I disagree that he should shift on the stop, but I don't agree that it will result in more MPH.

I'm NA, but in both my S/ST and SC car I come off the stop in Low and shift downtrack on RPM. I lose little to no MPH doing this, and especially in SC I will out-MPH cars that have 200+ more horsepower than I do. It takes a lot of power and time to get the car moving in High gear.

Again, if I had a supercharged small tire car I'd be shifting on the stop, but it will cost you some MPH.

I think they way Tom recommends the OPs car will be traveling slower while on the stop therefore shortening stop time and increasing the length of track to gain MPH. Personally I saw a noticeable increase in trap speed and decrease in stop time just by shortening the shift point from .65 to .40.

[Lenny5160]

Originally Posted by Marc

I think they way Tom recommends the OPs car will be traveling slower while on the stop therefore shortening stop time and increasing the length of track to gain MPH. Personally I saw a noticeable increase in trap speed and decrease in stop time just by shortening the shift point from .65 to .40.

Agree that the earlier on the track you go WOT will result in higher MPH, all other things being equal.

Disagree that with stop RPM and stop ON time being equal, a car coming off the stop in High gear will have more MPH than the same car coming off the stop in Low, even with the Low gear setup having a longer stop duration and going WOT further down the track.