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Having hydraulic disc brakes on a bicycle like this isn't something odd. Tons of regular bicycles have them these days.

The only kind of weird thing I see here is the idea the pedals aren't actually directly connected to the drive train, they just turn a generator.



That’s going to separate force-applied from force-required while riding - a much more comfortable pedal action.


That is what gears are for. The only time gears fail is when you want to pedal harder without going faster - charge the battery. Downhill with a tailwind the cautious can reach this situation, but most just go faster.

gears with a chain is more energy efficient.




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