My fixie runs on a Quando rear hub.
It would appear to have sealed bearings, which I have borked by running the chain to tight with a cheap chainring (not circular). therefore two questions.
1: Are these bearing servicable?
2: if I have to replace the hub what do I need to spec re chainline and what hubs are recommended?
Matthew
Sealed bearings aren't serviceable so much as replaceable.
The normal procedure is...
a) Remove all end caps, seals etc so the bearings are exposed. Take note of which way round and in what order everything fits.
b) support the hub shell on an open vice or two bricks or something so the end of the axle is clear and the gap is wide enough for the bearing to come out. Bash the top end of the axle with a mallet to drive it through the hub. The bearing at the bottom end will come out with it.
c) remove the bearing that came out with the axle, turn the hub over, put the axle back in and drive out the other bearing.
d) Go to a bearing supplier (yellow pages) and get two new bearings the same size. Bearing suppliers are generally much cheaper than bike shops, though occasionally you can fall foul of minimum orders or very large trade discounts.
e) when refitting the bearings into the hub, it is important to press only on the outer race. Anything flat and big enough will do for the first, or press it in using a vice. However the second bearing has to be pressed in with the axle in place so you need something with a hole for it. Using a suitably sized socket is the usual.
f) refit seals and end caps
