Top End Throttle Stop

[JP1738]

Looking to make a change in my program this year. Anybody have any advice/experience/suggestions on how to set up a finish line throttle stop? I'll be running SST in a car that, at min weight of 2800#s, runs 6.20s. I use a #1 Stop Pneumatic throttle stop.

[1700camaro]

Originally Posted by JP1738

Looking to make a change in my program this year. Anybody have any advice/experience/suggestions on how to set up a finish line throttle stop? I'll be running SST in a car that, at min weight of 2800#s, runs 6.20s. I use a #1 Stop Pneumatic throttle stop.

I would try to get ahold of Chris Garretson, I'm unsure if he's a CR member. He does or did very well in Super Comp, going slow on the top end.



1700/781L

[BKSG1198]

Chris is a wealth of knowledge on the Top End Throttle Stop deal, he taught me alot with our program and like any engineer he can get somewhat technical on how he teaches it....lol. It's basically keeping your RPM stall between 2,800 to 3,200 when you check it in the morning, the hotter the weather the higher the RPM you want to go, so like DA at 3,000 feet you want to be at 3,200 - cruises at like 5,400, always keep the first number the same and adjust the second number to the weather and always hit the playback tach or racepack if you have one so you can see what the cruise speed was.

[JP1738]

Wait wait wait. Are you saying you come back off the stop before the finish line? Or are you adjusting when you go on the stop and leave it on until you cross the finish line?

[Mike Gray]

Originally Posted by JP1738

Wait wait wait. Are you saying you come back off the stop before the finish line? Or are you adjusting when you go on the stop and leave it on until you cross the finish line?

I would, here?s something I did at the Winternationals back in the 90?s.
I was crossing on the stop and tried setting up high 9.80?s because you only have brake pedal (unless you have an on-off switch) to drive the finish line. As I approached the finish line the car in the other lane was right there and slowly coming around me. I hadn?t practiced hitting the switch to turn off the throttle stop so I was at the mercy of the timer and the other car took the stripe. I left on him and my 9.94 lost to a 9.92, if I had run just a little quicker I would have forced him into a breakout to take the stripe. Having use of the throttle at the finish line is easier and quicker than a decision to go for a switch to shut down the throttle stop.

[BKSG1198]

Originally Posted by JP1738

Wait wait wait. Are you saying you come back off the stop before the finish line? Or are you adjusting when you go on the stop and leave it on until you cross the finish line?

Yes, we have our come back on with about 200 feet left in the track to give you some wiggle room incase you feel like your going a little quick or if they try to wheel race you, they get quite surprised when you jump back out on them after they think they have you right where they want you

[Charles Stewart]

Not an answer for your question but some thoughts and view from Luke Bogacki.
https://www.facebook.com/watch/?v=792661139585716

[JP1738]

Originally Posted by BKSG1198

Yes, we have our come back on with about 200 feet left in the track to give you some wiggle room incase you feel like your going a little quick or if they try to wheel race you, they get quite surprised when you jump back out on them after they think they have you right where they want you

Interesting.