Why don't all bicycles have coaster brakes?

Question

When I had bikes with them as a kid, I don't remember ever having a problem. The handbrakes on multigear bikes seem to be a source of never-ending adjustments and repairs, not to mention their lousy performance when wet.

Answer 1

i know what you're trying to point out. But in reality, coaster brakes aren't that good. 1st of all about 70% for you breaking power is on the front wheel. Good bikes, with good rim breaks have few problems. Yes $69 Wal Mart specials are c**p. Coasters are OK for single speed kids bikes, but get complicated on multi-speed bikes. Hi performance rides wouldn't use them for several reasons.

Answer 2

I rarely need to adjust my brakes on any of my bikes, except when replacing pads, so I can't relate to those troubles. coaster brakes are actually dangerous, especially at high speeds. they effectively lock-up and stop the rotation of your rear wheel, which can cause the bike to skid out from under you. I wouldn't have fun doing that at speed with cars around me on the road, or creaming myself against a tree on the trails. also, you wear your tires unevenly, and faster, which is also unsafe. if your brakes require that much adjustment, get to your bike shop and discuss some upgrade options. if you want additional stopping power, especially in wet conditions, and your frame and fork are compatible, consider disc brakes..

Answer 3

On mountain bikes it's a bad idea.  Besides what M R said, that braking is done like 70% on the front brake, on a mtb you usually go down standing on the pedals and move your body a bit.  If you would use coaster brakes, it would be easy to involuntarialy brake and loose control.