Brakes won’t ‘hold’

demon322 said

I guess I haven’t looked at it this way. I assumed the front brakes did most of the holding/stopping vs the rear. But I could be wrong there for sure.

What you describe is how I’ve been launching the car at the line. Hold the brake. After staged bring rpms up enough to load the rear end and then stab the gas on the last yellow. Leaves pretty decent but I don’t know if it would burnout like this. Just took off. I was only running 12psi in the rears tho ha

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Gotta say it “sounds” like you’ve got enough heat for tires to work. If it’s launching hard without spinning. Do as RRR said and let it pull itself out. Maybe not sit in water box but roll thru get some water on tires and do your burnout just forward of the box. As for Smokey burnout, some think it’s cool but if a tire and suspension are working you may only get a few revolutions on the tire before it bites and launches. To me beyond that you need a line lock or other to lower the bias of rear brakes. The issue with adjustable proportioning valve is if you adjust for burnout you’ve gotta readjust back so you have proper bias for normal braking.