Thanks to a strong aftermarket, this has become fairly straightforward. What Makes a Kit Big? The big picture of brake theory is that brakes turn kinetic energy into heat, slowing your car in the process. Other factors include the master cylinder bore diameter and the pedal ratio. In order to increase stopping power, most big brake kits offers larger-diameter disks or drums, larger calipers or wheel cylinders, or both.
How to check the drum brakes on your classic car | Classic & Sports Car
When it comes to classic car brakes, most people set their expectations way too low. Yes, a lot of classic car braking systems have more than one issue, but two other factors also plague their reputation. Added together, these issues can make driving your car the wrong kind of thrilling. Brake issue? The problem may be something simple: This drum system recently received new shoes and wheel cylinders, but the rear shoe was fitted upside down. An amazing number of classics will fail this test.
The principle of semi-circular shoes acting against the internals of a machined drum that rotates as part of the hub assembly provided adequate stopping power for many years. In addition, the components are protected from dirt and debris — an important consideration on early roads. As front disc brakes became prevalent, drums continued to provide rear-axle braking largely because they allow a simple and effective handbrake system. To get short and confidence-inspiring pedal travel, the clearance between the friction surface and the drum has to be minimised.
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