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Discussion Starter #1 (Edited)
I wanted to throw this comparison out there just because I have been reading a lot about this subject. I have a powerglide transmission with a trans-brake. I have been using the trans-brake to launch the car for the past 2 years. I am going to a big footbrake race in July and figured I should get some footbrake seat time in, so I switched to footbraking this past weekend. I made 7 total passes (this was a test n tune), 4 with the brake and 3 footbraking. All passes were withing .05 and I have been fighting the consistency problem you see in the first set for the last 2 years (hmm, since I started using trans-brake). You can see in the second set the car is slightly faster in the 60' and much more consistent over all. I did this comparison for myself, but I thought many who are considering going to a trans-brake to pick up e.t would find it interesting.

With Brake 3rd run 1/8th mph is always like that in the right lane other 3 were left lane passes.
Run 1 Run 2 Run 3 Run 4
RT .0242 .0105 .0421 .0304
60' 1.5015 1.5012 1.5050 1.5094
330' 4.3279 4.3217 4.3159 4.3412
1/8 6.7435 6.730 6.7158 6.7519
1/8 mph 101.15 101.40 103.88 101.42
1000' 8.850 8.8363 8.8096 8.8548
1/4 10.6552 10.6377 10.6021 10.6533
1/4 mph 124.34 124.65 125.38 124.79


Footbraking first 2 left lane last run right lane.
Run 1 Run 2 Run 3
R/T .0034 .0257 .0295
60' 1.5002 1.502 1.5090
330' 4.3117 4.3197 4.3177
1/8 6.7135 6.7237 6.7156
1/8 mph 101.81 101.63 103.78
1000' 8.8075 8.8219 8.9102
1/4 10.6018 10.6167 10.6022
1/4 mph 125.17 125.21 125.38
 

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had one ,,

i had a brake in my transmission a while ,, never hooked it up ,, just loved flashing the converter from an idle ,, broke alot of stuff ,, loved it though ,, my car ran very cosistant leaving on the brake at about 17-1800 ,, but :devil: wasn't as much fun as seeing how far the tach would go over ,,lol
 

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A lot of times a footbrake will be just a tad quicker than with a brake. I used to drive a RED for a friend of mine and always went faster with the foot, than his other driver with the brake. I think the reason is that the car doesn't hit the tire as hard and the car leaves in a more fluid motion than with the brake. If the tire is stuck to the track and you hit it, there is less chance for slippage. Even if it's only a hundredth or two. That's just by my experience over the years. Dave
 

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Discussion Starter #6
A lot of times a footbrake will be just a tad quicker than with a brake. I used to drive a RED for a friend of mine and always went faster with the foot, than his other driver with the brake. I think the reason is that the car doesn't hit the tire as hard and the car leaves in a more fluid motion than with the brake. If the tire is stuck to the track and you hit it, there is less chance for slippage. Even if it's only a hundredth or two. That's just by my experience over the years. Dave

I think one of the reason's my car was slightly quicker on the foot, was that when I set the trans-brake the car would settle ever so slightly forward, when footing, It is shallow as shallow gets and holds there. So I am maybe .5-.75 inches shallower, just a guess, might be even less or more than that.
 
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