The freewheel is a ratcheting mechanism, that coupled with a set of gears, is that threaded onto the rear hub of a bike. The freewheel allows the rear wheel to engage and move when the pedals are spun forward, but coast freely when the pedals are stationary or spun backwards.

learn more… | top users | synonyms

6
votes
0answers
163 views

Is changing wheel necessary to use a freewheel with different number of gears?

Approx. 3 weeks ago I found an abandoned frame (including handlebars, fork, brakes, pedals and shifting gears attached to it). I decided to use it to build a new bicycle since only recently I've ...
2
votes
0answers
65 views

Can you identify this Sachs hub?

I recently picked this up along with a couple of old wheels. I don't know it's age or history. I've only got as far as identifying it as a Sachs. There are no other markings apart from the logo ...
0
votes
0answers
35 views

What is a good replacement for my MF-Z012 6 speed wind on casette?

I'm trying to find a good replacement for my MF-Z012 6 speed wind on casette. Thing is, I've upgraded my bike with '93 dura ace rear and front deraillers. Trouble is they are 7-speed compatible. ...