When do you activate your Throttle Stop?

[sst7250]

I think the 1000 different opions line is spot on..

For me the stop comes on at .000, but my car can run a good bit under the index. IMO experiment after you get some input here, that is the ONLY way you will find what works bets for you. Good luck!

[EricArrow]

I come on .3 out.....this has worked well for me since I have a rather mild ride for SR...I think I need the hit on a .400 tree. I can go red but only 3 on a good track.

[cujo3116]

We have two Stop cars, a H/R car that runs 9.90's and 137 and slowed to 10.90 and a S/R car that runs 9.00's at 149 and slowed to 9.90.

With the hot rod car I come on the stop at .050, my static rpm is 4000RPM and its on the stop usually around 2.2 seconds, shift on rpm at 6600. Its a grunt motor and runs 10.90 at 136 MPH. My 60's are typically 1.70 with the stop on and 1.39 all out.

The Super rod car I have tried setting up 3 different ways so far in testing.

Tried going on stop at .200 at 5000 RPM and shifting at 7000 RPM (on stop for 2.5 seconds. 60's were all over the place

Tried goin on stop at .100 and shifting at .800 on time (stop rpm of 5000 again) on stop for 1.8 seconds average) consistant 60's but car seemed to struggle coming off the stop in high gear

This past season set it up to go on stop at .100 at 4300 rpm shift at 7000 rpm and was on stop for 2.1 seconds. this way seemed the best for consistancy, my 60's were very consistant and the car was soft coming off stop and charged well. Still struggled abit with ratio it seems but overall this set up worked best.3

As many have said theres a 1000 ways to do it, but sometimes its nice to see what others are doing and maybe get a fresh idea or something new to experiment with to see if you ride likes it or not.

Andrew

[THE LEGEND]

My car runs 9.90
In 10.90 I stopat .20 come off around 2.20-2.30 depending on air. I shift around 3.25
10.90 around 132

A lot depends on your combo. What works for others may not work for you
Chip Johnson

[Rollins_2241]

I want to clear the beams before on the stop (.270) because data on delay and rollout is vital and don't want to make my bracket data useless.

With a 4150-style carb and an old box I can only come off in low gear. I try to kill it down to 4200, and am usually on for 1.5 to 2.2 seconds depending on the air. When it comes off I shift on RPM, to me using time is another variable to avoid unless you need it (high-power car). I usually run 131-134 all out and only lose 1 mph on the stop.

[65Shoebox]

Some great feedback guys. Thanks and keep it coming!

We are planning to test one or two different approaches tomorow at G-villle.

I think that we have been stoping and shifting too early based on the feedack here. Also, I like the approach of letting the car work on the line and then getting on the stop once it settles. This may be .5 out for me, but we shall see...

[HR9121]

Originally Posted by THE LEGEND

My car runs 9.90
In 10.90 I stopat .20 come off around 2.20-2.30 depending on air. I shift around 3.25
10.90 around 132

A lot depends on your combo. What works for others may not work for you
Chip Johnson

Hey Chip, just curious about shifting on time after you come off the stop, I just assumed that might make you shift at different rpms depending on how long you were on the stop. Have been curious about that but have never tried it. Just wanted to hear your thoughts about that. James Williamson (Legend in my own mind)

[65Shoebox]

BTW. This feedack helped tremendously. The car is 60 footing with great consistency, and the ratios are working. I am now going on the stop at .3 and shifting about 1/2 way though the time on.

Thanks all!

[EricArrow]

Originally Posted by 65Shoebox

BTW. This feedack helped tremendously. The car is 60 footing with great consistency, and the ratios are working. I am now going on the stop at .3 and shifting about 1/2 way though the time on.

Thanks all!

Good to hear...