bleed

How to bleed MTB brakes

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According to a poll I put up on the YouTube community section last week, 32% of you bleed

your own brakes.

21% of you have a shop bleed your brakes, and I can’t blame you.

There’s no shortage of reasons to let someone else do it, especially if you live in an apartment.

As for the remaining 46% of you it’s not about the know-how, the tools, or the mess.

You just don’t know what the freak a brake bleed is, plain and simple.

This is okay because today, that’s gonna change.

Even today’s most basic mountain bikes have disc brakes.

Some use cables, while others use hoses filled with oil.

Hydraulic brakes are powerful and accurate, which is why cars and motorcycles have utilized

them for the better part of a century.

The hydraulic brakes on a bike consist of a lever, a hose, and a caliper.

This closed system is filled with oil, so when you pull your lever the oil is displaced,

forcing the pistons in your caliper to squeeze your rotor.

But why are these systems filled with oil?

Why not a gas like air?

Well air compresses easily, which is why it’s ideal for suspension forks.

Filling a fork with air ensures it will move when you hit a bump.

But if we were to fill your fork’s air chamber with oil or some other liquid, it would feel

completely rigid.

As for cable actuated brakes they work fine, but there’s friction between the cable and