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ss conversion with old freewheel

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ss conversion with old freewheel

Old 03-30-06, 05:09 PM
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papalok
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ss conversion with old freewheel

Hi Everybody,

New jack here so big ups and much respect to those keeping this community alive.

Now on to the ?

Has anyone converted an old Suntour Perfect 5-speed freewheel to a single speed. If so, how? So far, I've found that I need a dual spline tool to take off the freewheel but don't know how to take off the sprockets. Then, once I have the sprockets off, I'll need spacers for the missing sprockets. Does anyone know if special spacers are required for this old freewheel? Alternatively, I've read that I can use pvc piping to fill in the gaps. Does this work well and is there wear on the pipe to where I'll have to replace the spacers regularly. Clearly, I want to do this to avoid getting a single speed freewheel and then respacing and redishing. Anyway, thanks in advance for any help yall can give me.

Btw, I'm referencing a previous post for info:

"to make a quick and easy ss out of a road bike you remove the cogs from the cassette. you keep the cog you want and use either cassette spacers (from lbs) of cut down vinyl drainpipe to place that cog at the correct point along the cassette spindle to achieve correct chainline (straight line, viewed from above/behind) between cog and chainring.

change the chain to a bmx one, as road chains are designed to flex along their length to facilitate shifting. you don't want that."

Peace!
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Old 03-30-06, 05:19 PM
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Cassettes and Freewheels are different beasts. Why not spin off the old freewheel, put a BMX freewheel on the threads and re-space/dish the wheel to be centered?
Freewheels thread onto the hub, and the ratchet is part of the freewheel assembly. In a cassette system the ratchet/freewheel is part of the hub and the cassets slides onto some splines.
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Old 03-30-06, 06:02 PM
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Yeah, I'm avoiding getting a new single speed freewheel and respacing/dishing for now (until the summer when I have more time). To get a quick conversion, I want to spin off the old freewheel, knock off the 4 of the 5 cogs, space w/ spacers or pvc to get a good chainline and be done with it. Any knowledge on knocking off the cogs on this freewheel is much appreciated as well as any knowledge on pvc pipe spacing or spacer compatability for this freewheel.

Also, I know it can be done as Mr. Brown has done it:

"The freewheel is an old discarded Sun Tour "Perfect" 5 speed unit, with 3 of the sprockets removed and replaced with spare spacers."

I just need to know how.
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Old 04-02-06, 02:11 AM
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update!

Aight, spun off the freewheel and spun off the first and second threaded cogs. Needed 2 chainwhips but it worked. Inner 3 were splined so they slid off. First cog is 14t; 2nd is 17t. Spun the 14t back on to where the thread meet splines on the freewheel so it's snug and fasho ain't gonna move. Spun the freewheel back on the hub. Put the wheel back on. Measured the gears for center line. Turns out the 14t with the inner chainring looked near perfect. Chopped the chain to size and went for a test ride. Readjusted chain length and rode again. Freshness. 42t/14t is a perfect 3:1 ratio, but it's hard as sheize. Don't want to drop down to the 17t so just need to get stronger. Anyway, I lucked out without having to get a new freewheel and respace/redish. If anyone cops a Raleigh Super Course with the Suntour Perfect 5-speed set, this just might work for you. Peace!
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