"fixed" freewheel, variable gear?

Ryan Cousineau said:

If you couldn't find one of those, another option would be the Schlumpf two-speed "mountain drive"
BB, which might work with a fixed gear: sheldonbrown.comschlumpf.htmlOpen ↗

Nope. It can't withstand significant reverse torque.
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KinkyCowboy <[email hidden]> wrote in message

Quoted message said:

Or use a double chainring and two sprockets (should be able to screw two track sprockets onto the
long thread of a 6/7 speed freewheel hub). 42x15 and 38x19 for example gives 76" and 54" gears
with no change of length, and you could probably arrange a perfect chainline on both combos with a
bit of shimming. You might even be able to change gear without loosening the rear wheel.

change gear without loosening the r.wheel? that means a pretty loose chain. certainly looser than i
would feel good running fixed.

Do what the old guys did. Use a double sided hub. Put a small sprocket on one side and a big one on
the other. When you come to a hill. Get off and turn the wheel around.

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