Brake Clutch and Steering brace

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Wrapping up the next phase in Courtney’s Sedan build up we needed to securely mount the steering box, brake and clutch system. With cowl steering there are some inherent issues to deal with like pedal placement and couple that with an engine mounted high in the frame and make it a manual trans! Well, space is at a premium. Poking the master cylinders through our newly fabricated and clean firewall wasn’t an option and the steering box takes up some real estate so moving the cylinders to the right side of the car is the solution we chose.

The brake and clutch pedals operate through concentric shafts housed in an aluminum tube. The brake tube is supported inside the aluminum mounting tube with PEEK plastic bushings. The inside of the brake tube is machined smooth and it supports the clutch shaft. The clutch shaft itself is made from 4340 bar stock and has three machined journals for needle bearings to ride in. You will notice there are three master cylinders. Two of which operate the brakes through a balance bar system like you would find on a race car. Brake bias is achieved through threading the balance bar left or right which moves the spherical ball mount inside the bellcrank giving a differential force advantage on one cylinder over the other.

The steering gear in this case is a late 60’s to mid 70’s MOPAR steering box with a custom made pitman arm.

Alibre' drawing of cowl support structure
Completed unit
Complete brake, clutch and steering structure