Throttle Stopping
 

This will be my first venture into S/R racing and was kinda looking for pointers on the T/Stop settings. My car will be approx 1.75 sec under the index. I am looking at going on the stop at .2 or .3 and shifting at .6 and then being on the stop for 1.75 or the approx differance in et on a wide open run to a T/Stop run. Think I may be close or way off ?

Re: Throttle Stopping
 

Search the forum for "stop" and you'll see several helpful threads, this being one of them.

http://classracer.com/classforum/sho...highlight=Stop

Lots of variables (like stop RPM) but get close to find your ratio and go from there. Someone running about the same ET can give you a start point but "your results may vary". Biondo's site also has some good tech tips on running a stop.

Re: Throttle Stopping
 

Thanks,will do.

Re: Throttle Stopping
 

Look us up in Virginia and Jr will help you get in the right direction. Call me if you need to..
We will be there Thursday nite (early)

Re: Throttle Stopping
 

My car will run 8.50 flat out and I am on the stop at .3, shift at .5 and am on the stop about 2.20 with air about 2500-3000ft and 4200 rpm while on the stop. Last year at Virginia in October I was on the stop about 2.5 seconds, hopes this helps.

Re: Throttle Stopping
 

cdh124 is close if your "cruise " rpm's are about 4200. you'll be at 2.50 or so...good luck.

Re: Throttle Stopping
 

I will go to idle at .2 or .3 and shift @ .6 and thought that with a car that can run at least 1.75 under index that I would start by taking that amount (1.75) and stay on the stop that amount of time for starters. By running a Terminator I will go to idle quickly. I could be all wet here:confused:

Re: Throttle Stopping
 

You're assuming a 1 to 1 ratio and that's incorrect...remember you're still covering ground while on the stop. And your RPM on the stop needs to be up in the ~4200 range. Think the others are right with 2.50 being close. Danny and his son can get you close too...better do the test and tune, you'll need 2-3 laps to even get close to your ratio.

Re: Throttle Stopping
 

Thanks for helping.

Re: Throttle Stopping
 

One of Biondo's excellent primers on stops, more on their site. They are great to deal with and one of ClassRacer's sponsors BTW.

http://www.biondoracing.com/manuals/...20Stops/TS.pdf