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Old 08-21-2024, 08:30 AM   #15
Doug Hoven
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Join Date: Feb 2018
Location: Jersey
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Default Re: Brake Pressure Switch for launch control ???

Quote:
Originally Posted by JP1738 View Post
Slightly off topic here, but is it legal to use a momentary switch that's not mounted directly to the brake pedal that you hit with your foot? Like a WOT switch on the back side of the pedal that makes contact when the pedal is depressed a certain amount? I could go through the rule book and check myself but I'm lazy and I don't want to. TIA
I believe something like that would be legal. That?s how a lot of clutch guys activate the 2 step, with a momentary switch, sometimes mounted to the pedal, other times activated by the Z bar, or back of the pedal. What I don?t think is legal, is having a button to activate your circuit for your 2 step. Not that tech is really a thing anymore, but NHRA didn?t like that in theory, you could also deactivate the 2 step with the same button, and in Stock you aren?t allowed to launch off of a switch or button activated by hand.
Now, I?m not sure if I?m just ignorant, oblivious, etc, but I don?t understand the issue of having a brake pressure switch active during the run. My 2 step is activated at 600psi. More than likely, if you?re using more than 5-600psi on a run, you are probably not going to be under power, and probably close to locking up the front brakes. To the best of my knowledge, if engine rpm is above the 2 step rpm, ignition will be cut completely.
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