On Tue, Mar 3, 2009 at 3:02 PM, Shaun Meehan <meehan.sh...@gmail.com> wrote: > This might sound like a dumb question but I've never run a fixed gear so I > don't know. How does the threading for a fixed gear differ from the > threading for a freewheel?
On a fixed hub, the threaded section for the cog is identical to a standard freewheel threading, but the section is usually narrower, just under the width of a track cog. There's then a stepped-down threaded section next to that with a slightly smaller diameter and reverse (left-handed) threads. The track lockring then would tend to tighten further under backpressure, virtually guaranteeing that the cog can't unscrew. Lots of people will use a standard freewheel hub with a standard BB lockring as a cog lockring, and the reason this can be risky is that the lockring could potentially unscrew with backpressure on the cog. In reality, the risk depends on your riding style; if you skid-stop a lot a track lockring will be a lot safer, if you pretty much always use your brakes to stop and periodically check the tightness of the lockring, a standard freewheel hub might be fine. -- Bill Connell St. Paul, MN --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~----------~----~----~----~------~----~------~--~---
