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1

I have never seen such a design. As others have mentioned, the described design would be difficult to make work as you would need to switch the gears and if you didn't want it fixed you'd need a freewheel that engages backwards. However, you may be interested in the retro-direct (https://en.wikipedia.org/wiki/Retro-direct). The retro-direct has two ...


3

Answer: No. But you could make design and make one. You'd have to have some creative way to safely disengage one of the chains, and let the higher gear click away on its freewheel. Try sketching up a drawing and posting it for feedback. Not just a description in words, an initial diagram.


3

The recommendation of Calvin Jones of Park Tool for a trail/road-side conversion to a single speed is: If you have multiple chain rings, put the chain on the 2nd-to-largest chain ring. I.e. if you have two chain rings, this will be your smallest. For the cassette, put the chain in a straight line back from the chosen chain ring. If in doubt, use the ...


1

Freewheel skipping is a very common occurrence when the temperature drops below -25c. Just bring it inside for a few minutes and you will be able to catch a cog on the freewheel or whatever it needs to catch inside. Once peddling never let up on the pressure of each stroke. Never coast. Pedal as you brake to a stop. Then it will stay engaged. I found ...



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