This animation demonstrates the basics of hydraulic disc and drum brakes in action. As the brake pedal is pressed, the piston in the master cylinder sends pressure (via the brake lines) to the ...

While most consumer vehicles will opt for disc brakes these days, commercial vehicles are still opting for the older drum brake technology for stopping power.

His well-founded fear was the stock drum brakes on the GM Corporate 14-Bolt he’d slipped under his soon-to-be mud runner and trail truck wouldn’t be up to the task of providing the braking ...