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Covertion from fixed to s/s(3 posts)

Covertion from fixed to s/sJock McScot
Sep 25, 2003 3:06 PM
Hey all, from the impending winter of Scotland. I gotta question for y'all. I've got an old Raleigh that currently fixed but as I'm just coming back from an injury and my fitness is a joke, I would really like to convert it to a single speed for belting about in the rain.

So my question is thus - how easy is it to convert a fixed wheel to a single speed? Do I need to change the rear hub completely or is there something else I can do to make it a freewheel. I have got an old wheel with a cassette on it that I could just space for a single speed, but I'd rather convert the fixed hub if there's a way.

You guys have got some pretty bikes by the way...

Thanks for all your help in advance.
Very easy.Humma Hah
Sep 25, 2003 4:03 PM
Remove the fixed gear sprocket. It may be held on by a lockring that must be turned clockwise to remove it. The cog itself screws off counterclockwise. A good chainwhip tool will probably be necessary to break it lose.

Then get a singlespeed freewheel of the desired number of teeth, and just screw it on. Because it freewheels, it does not need a lock ring, but it can be installed on a hub designed for a lockring. The best way to remove a freewheel is to get a freewheel removal tool intended for that part ... might want to pick up one of those when you buy your first freewheel. There are several styles in use, the most common uses 4 lugs.

The alignment of fixed cogs and SS freewheels is pretty much identical, so it should go right on.

You can get singlespeed freewheels from many sources on the web, and they're sold to the BMX crowd. They typically cost around $20 for the usual variety, such as the ACS Claws models. White Industries sells some high-end ones for about $70-80.

If looking for an old wheel to convert, forget modern freehub/cassette systems. Get an older wheel with a 5, 6, or 7-speed freewheel. These screw right off and a SS freewheel screws right on. Change a spacer or two, maybe redish the spokes slightly to get the desired alignment, and you're good to go.
Very easy.Jock McScot
Sep 26, 2003 5:13 AM
Wow, that is easy.

Thanks Humma.