When do you activate your Throttle Stop? - Page 2

Rollins_2241 · 02-16-2011, 10:03 AM

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 · 02-16-2011, 03:37 PM

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 · 02-16-2011, 10:25 PM

Quote:

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 · 02-22-2011, 06:25 PM

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 · 02-22-2011, 08:49 PM

Quote:

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...

02-16-2011, 10:03 AM	#11
Rollins_2241 Member Join Date: Nov 2007 Location: Tallahassee, FL Posts: 170 Likes: 0 Liked 0 Times in 0 Posts	Re: When do you activate your Throttle Stop? 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.

02-16-2011, 03:37 PM	#12
65Shoebox Junior Member Join Date: Oct 2009 Posts: 32 Likes: 0 Liked 0 Times in 0 Posts	Re: When do you activate your Throttle Stop? 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...

02-22-2011, 06:25 PM	#14
65Shoebox Junior Member Join Date: Oct 2009 Posts: 32 Likes: 0 Liked 0 Times in 0 Posts	Re: When do you activate your Throttle Stop? 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!