Re: Anyone tried the new Wilwood disc brake kit for Packards?

Posted by Fred Puhn On 2014/1/17 10:50:51

Before doing this make sure there is enough braking torque without using a power booster. Most disk brakes use boosters because they do not have self-servo action. A drum brake leading shoe or duo-servo design has servo action which increases the braking torque due to the "leverage" of the shoes. Take a look at a good brake theory book such as the "Brake Handbook" to dig into this more. Drum brakes do fade more than disk brake when hot. Part of this is due to the servo action, which magnifies change in shoe friction.