Bicycle Mechanics - SS Conversion

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FatBomber
06-26-06, 09:52 AM
The bike I have came with a 5-speed freewheel. I have seen that there is a single speed freewheel available online. Would that do the trick?
Retro Grouch
06-26-06, 10:33 AM
Probably not.
Single speed bikes are picky about chainline so you'd have to check that out.
If you have vertical dropouts, you have to have a way to adjust your chain tension. The simplest way would be to keep your rear derailleur but, if you do that, what's the point?
Grand Bois
06-26-06, 10:33 AM
It will give you one speed, but just using one of the cogs on your five speed will accomplish the same thing. It just won't look cool. The hard part is getting a straight chainline. Read Sheldon Brown.
SingleSpeeDemon
06-26-06, 10:41 AM
I've had good luck in using a Shimano BMX freewheel and leaving the rest alone. Maybe I'm lucky--chainline be damned!
bsyptak
06-26-06, 10:53 AM
I've had good luck in using a Shimano BMX freewheel and leaving the rest alone. Maybe I'm lucky--chainline be damned!
Me too. There are a few cheap things you can do to move the front or rear one way or the other though. On the rear, screw a bottom bracket nut (same threads, free from your LBS) on before your BMX freewheel, thereby moving it out a few mm. On the front, if you have a double crank, you can put the chainring on the inside or outside of the crank.
Grand Bois
06-26-06, 11:01 AM
Probably not.
Single speed bikes are picky about chainline so you'd have to check that out.
If you have vertical dropouts, you have to have a way to adjust your chain tension. The simplest way would be to keep your rear derailleur but, if you do that, what's the point?
Vertical dropouts can actually work better for single speeds if you can find the gear combination that will give you correct chain tension. The wheel is locked into position, so it can't be pulled out of position no matter how hard you stomp on the pedals. You can even use a quick release. When the chain gets too loose, it's telling you that it's worn out.
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