Got one of these on my cx bike:
http://www.chainreactioncycles.com/shimano-single-speed-freewheel/rp-prod7805
Did a big ride yesterday, full of rain,mud and grit - by the end of it the free wheel was just grinding - cranks won't spin backwards freely and it sounds bloody awful. Are these serviceable, or is it just buy a new one and replace?
I'm not sure they are serviceable. If you want a serviceable one, you'd be looking at White Industries for about thrice the price; it's brilliant, by all accounts. The Halo Clickster also gets good reviews, although i've no first hand experience...
[url= http://www.charliethebikemonger.com/freewheels-screw-on-224-c.asp ]Charlie[/url] has a good selection.
The piece with the two small hole used to unscrew with a pin spanner, then you could get it apart.
Binned mine after 7 months on my day1 after it started bleeding rust (something about riding through floods).
Got a used white industries on the bay which has been great
Cheers guys. I'll look to replace. Tempted by the white industries but it is expensive!