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#1 | |
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Join Date: Apr 2008
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Just to complete the logic circle, you do have a brake pressure gauge in the car and know what brake pressure you are staging at correct? Don't have time to look, etc, get a go pro and video the gauge. If your not consistent with that then there you go. Two step, could help, depends on your carb and how it works when floored, you may also want to upgrade to a brake pressure switch, instead of the brake pedal piece. Log books should give you a clue too. Time trials versus competition etc. Change one thing at a time. Eric
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Eric Merryfield 1883 STK |
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#2 |
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What’s the best source for a brake pressure switch? I’ve also avoided a button on the brake petal, just another thing to put in the starting line procedure.
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Jim Carter 2340 Super Stock 2340 SST/2340 Stock Set another place at the table |
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#3 |
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Join Date: Apr 2006
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ok this is gonna sound stupid but try ankle weights used them on my stick super stocker was going 10-15 red try 5pd weight
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#4 |
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#5 |
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would it be any different if it was 5lbs of lead in a shoe?
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#6 |
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I would think there is grounds to consider that the whole front tire pressure affecting RT's might be somewhat of an urban legend. As a test, I put my car on a flat floor in the shop and put a 3" block in front and behind the front tire at the 40PSI that I normally run and measured the distance between the blocks. I then started lowering the pressure in increments and remeasured the distance. I got all the way down to 15 PSI (which I thought was probably an unsafe pressure to actually race at) and the distance between the block had barely changed. Maybe the 3" height wasn't quite right but it has to be pretty close to the correct height for the photocell. Based on that, I kind of wonder if the real life change in RT is in the drivers head and not a result of the rollout. If you doubt my test, try it yourself.
Jim Caughlin SS6019 |
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#7 |
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Someone has a detailed mathematical analysis of this online that reached the same conclusion. I think you need to focus on other parameters rather than tire pressure.
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#8 |
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Was told to do this many many years ago by Tony Cowell.
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Ed Carpenter 2005 Chevy Cobalt A/SM Race Engine Development |
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#9 |
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Wish I could remember who, but a fast stick shift guy once showed me weights he bolted to his clutch pedal.
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Ed Wright 4156 SS/JA |
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#10 | |
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Join Date: Dec 2008
Location: Berthoud, Coloraduh
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damn! never thought of that! I gotta try it ![]()
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