Roger Blackmore

I'm running there 4 piston drag brakes all the way around on a 2001 formula. Car is about 2800 pounds curb wt. track only. Using the Race Craft manual master cylinder. Car doesn't seem to have enough braking in the rear. Was wondering If some of you guys running this type of set up are using a proportioning valve

TurboStangJON

iTrader: (27)

No proportioning valve on mine but I run the Strange setup all around. Stops on a dime...

studderin

iTrader: (28)

you drill a new hole on the pedal arm? I think you have to 1inch up for manual masters

1BAD98LS1

iTrader: (33)

I have manual brakes and the 2 piston aerospace brakes up front with a proportioning valve. Have to get on the pedal pretty good after going thru at only 120. Maybe this could help, tried messing with prop valve and don't seem to make much dif.

Roger Blackmore

Thanks for the input guys. It was run with the pedal hole moved up1". I will try bleeding the brakes again, and go from there.

WhiteLTone

iTrader: (18)

did you bench bleed the master? ive heard issues with manual brakes when the master wasnt bench bled before install. i have aerospace upfront w/ stock rear brakes and a manual master and mine stops from 150+ in time for the first turn off.

Roger Blackmore

Yes we bench blead it

ATwelveSec02Z28

iTrader: (17)

I have the strange master and aerospace all around. Never had any problems going through the traps 140+ mainly run 1/8th mile @ 130's haven't felt the need to use the chute yet

fuel

iTrader: (13)

i have aerospace brakes and the master that thay sell.i have a need to pull the chute on a 8.50 pass

Roger Blackmore

I re blead the brakes, and its still no better. We probably have just under a 1/4 shut down length, and from 130 it takes it all. Still don't think I'm getting enough to the rears.

BES Stroked Nova

iTrader: (24)

I got the strange master, aerospace 4 piston's all the way around, and I think my car stops really well, 150+ traps, only pull the chute to feel like a badass LOL

ZTwentyAteU

iTrader: (12)

I run strange all the way around as well and no prop valve. Car stops pretty good 150+ traps and like mr charlie says no chute needed really, I can tell it helps but i'm too lazy to roll it up. I havnt pulled it but once since I put it on.
I did take some night go pro vids last year and the front brakes throw lots of sparks from the pads I guess. lol. I should prob yank it on 1/8 mi runs with short shutdowns