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where to put adjustable brake prop, valve

Shocks, Springs, Brakes, Frame, Body Work, etc

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chevyart
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where to put adjustable brake prop, valve

Post by chevyart »

when using an adjustable proportioning valve on a drag car with all disc brakes. should the prop. valve be placed before or after a line lock for front wheels. could someone explain this one in detail and why the valve is placed where you say it should be. thanks art in NY
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FC-Pilot
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Re: where to put adjustable brake prop, valve

Post by FC-Pilot »

The prop valve should be for the rear wheels. You want your front wheels to lockup before your rear wheels.

Paul
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6.50camaro
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Re: where to put adjustable brake prop, valve

Post by 6.50camaro »

On my car I placed the line lock before the prop valve because , the prop vale has separate outlets for right front and left front brake lines or 1 inlet and 2 outlets for front bakes.
cad
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Re: where to put adjustable brake prop, valve

Post by cad »

Prop valve to the rear on mine with skinnies and 14x32 rear tires.
David Redszus
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Re: where to put adjustable brake prop, valve

Post by David Redszus »

The prop valve should ALWAYS be placed after the master cylinder and before the rear brakes.

It is important to select the correct prop valve with respect the the slope and knee of the prop curve.
In our race cars, we place a brake pressure sensor in both front and rear brake lines. This permits the measurement of the hydraulic brake bias.
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