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Here I have replaced the middle gearbox with a bicycle bottom bracket for higher precision and less energy loss. As I have said before in my previous posts ...
The Gearcycle Part 1by ajensen19
How to get super-low gears on a bicycleby Yard Sale Dale
The Gearcycle Part 5by ajensen19
How to lubricate a bike chainby swang7
Single Speed on the Cheapby Fuzz2050
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