Freewheel singlespeed conversion *HELP*

[Psyclist]

Hi, so I have a 27" freewheeled bike which I want to make single speed.

Do you know how I can put a single cog on the rear wheel, to make it single speed? (not fixed)
I'm getting a new wheelset from bike shop but will go 27" now, but all 27" wheels are freewheel - are there any single speed kits or something I can use?

Would the below cog work? And would I need anything else to put on it to make it stay? Or spacers?

http://www.chainreactioncycles.com/Mode ... delID=7805

Any help will be appreciated.

Thanks.

 

[mattsccm]

Depends on the hub. i am going to ake the assumption that your 27" wheels are original and thus half a screw on freewheel rather than a cassette. If so that free wheel is all you need. Once fitted you may have to fiddle with the chain line which may need adjustiing which in the worst case might mean that the wheel needs the spokes redishing. To be honest, if it was mine I would bung that freewheel on and see. I expect it will be ok.
Don't buy cheaper freewheels such as Dicta. They are junk.

 

[Psyclist]

Thanks, and I was told my wheels may have to be re-dished and spaced by someone else too.

 

[bm0p700f]

In order to avoid redishing, use a tripple chainset and use the granny ring position to mount your chain ring or use the inner of a double and get a shorter BB. I probably won't be perfect but will be close enough to do.

If your rear dropouts are 126mm then a screw on hub is mostly all that is available. If you rear dropouts have 130mm spacing then why not get a 27" wheel build with a single speed hub. Many way to skin this cat depending on your budget.

 

[Dead Rats]

you can perfect the chainline a little (ie move the freewheel to the right more!) by using a spacer behind the single freewheel.

IME you will have to use a quite short BB (depending on what cranks you're using and being careful not to get the ring too close to the chainstay), respace the axle to get correct chainline, then redish the rim to centre it in the frame

 

[Jonny69]

IME you will have to use a quite short BB (depending on what cranks you're using and being careful not to get the ring too close to the chainstay), respace the axle to get correct chainline, then redish the rim to centre it in the frame

This is exactly my experience. If you buy a wheel for a single speed freewheel you won't need to re-dish it because it will be centred already. You will probably need a narrower bottom bracket though, unless you offset the back wheel by spacing the hub and re-centre the rim.