Over the course of the past few prototypes I tried a lot of versions of the gearing.
For instance in this mess above you can see a front derailleur mounted so as to switch between the three gears on the pedal chainring. All the solutions were heavy and messy.
I decided to worry about the gearing later and focus on a less expensive, lighter and simpler solution. I realized that with jockey wheels, commonly used on rear derailleur’s, I could route a simple loop of chain around all the required sprockets.
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