CLASS RACER FORUM - View Single Post

Adger Smith · 05-26-2014, 10:29 AM

Back in the '90's I bought a Comp car from a championship team that had them.
It had residual valves that were located back on the rear end housing.
It had one to each caliper after the Tee on the housing. I have always wondered why it was done that way. For a car that had the dual (front brakes,too) master cylinder mounted down low on the frame rails it worked well. Still needed one pump to get a pedal with feel & the brake pressure gauge to respond. Another thing I found that was interesting was a brass cup that was placed in one of the fittings on the master cylinder side of the line lock. It had a .060 hole in it for fluid flow. I just figured it was a poor mans proportional valve. Could the cup plug have been there to place a little drag on the front brakes as the line lock was released? In dealing with Stick cars I know that a little "hold or drag" on the front brakes helps set the rear suspension & clutch. That usually helps E.T., too.
I'm going to plumb a Roadster I've had for some time. I've decided it's primary use will be for local index and bracket races.
Thanks for the replies. I'm sure they helped.
FWIW: any more ideas will be appreciated, too.
Adger Smith

05-26-2014, 10:29 AM	#4
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: Brakes Back in the '90's I bought a Comp car from a championship team that had them. It had residual valves that were located back on the rear end housing. It had one to each caliper after the Tee on the housing. I have always wondered why it was done that way. For a car that had the dual (front brakes,too) master cylinder mounted down low on the frame rails it worked well. Still needed one pump to get a pedal with feel & the brake pressure gauge to respond. Another thing I found that was interesting was a brass cup that was placed in one of the fittings on the master cylinder side of the line lock. It had a .060 hole in it for fluid flow. I just figured it was a poor mans proportional valve. Could the cup plug have been there to place a little drag on the front brakes as the line lock was released? In dealing with Stick cars I know that a little "hold or drag" on the front brakes helps set the rear suspension & clutch. That usually helps E.T., too. I'm going to plumb a Roadster I've had for some time. I've decided it's primary use will be for local index and bracket races. Thanks for the replies. I'm sure they helped. FWIW: any more ideas will be appreciated, too. Adger Smith __________________ Adger Smith (Former SS)