Removed old freewheel, now how to fixed gear??

TiTo13 · 06-05-2009 9:50pm #1

I have recently acquired an old Raleigh mens racer and decided that I would go about converting it into a fixed gear bike. I removed the old freewheel which has the cassette built into it. I removed it by taking the freewheel apart, as I reckoned building a fixed gear bike I won't need a freewheel.

Now I am left with the standard threaded fitting onto which a freewheel attaches. What is the best course of action to attach a single sprocket to this? I reckon I may need spacers to have a good line with the front chainring, most of the kits out there are for splined hubs or freewheels. I can't seem to find a single sprocket out there that can thread straight onto the old free wheel fitting?

Gavin · 06-05-2009 9:57pm

It's going to be a bit dodgy, you won't have a lockring to keep the fixed sprocket on. Also known as a suicide hub.

Doable though. A track fixed sprocket should just screw on

TiTo13 · 06-05-2009 10:03pm

Thought that myself, it does seem a bit dodgy. If I was even to add a second sprocket with the "spockety" bits cut off, it may hold it in tighter, or even a modified part of the old freewheel.

Any sort of non-freewheel, freewheel out there?

Edit:

How about this solution then?

One of these and one of these or these.

Morgan · 06-05-2009 10:29pm

A thread on sprocket is what you need. However the lockring will not fit your hub. The threading is different. Fixed hubs are stepped to accommodate the lockring.

TiTo13 · 06-05-2009 10:38pm

Thanks for that Morgan ans Gavin, I reckon I'll just go for a thread on sprocket like the ones I linked too then.

Quick and rather silly question I think, are 700c tubes suitable for 27" tyres? I can see tubes for up to 26" and then none for 27" I take it they are compatible? Mine are 27" by 1 1/4" tyres, which I am going to replace anyway.

Removed old freewheel, now how to fixed gear??

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