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Bicycle to knitter and smoothie maker

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Hi there, I am NOT an engineer but I want to make convert pedal power from a bike to power a smoothie and also turn a circular knitting machine and maybe a few more things too. I have pics of how far I have got - the bike has no wheels and is stabilised, and my thought was to use the gears and adapt a chain somehow to create vertical to horizontal motion to power the smoothie maker.  It has to be powerful as if it was elastic the torque would not be strong enough.  The knitting machine the revolutions would have to be slowed down and the machine is made of plastic (it is like an addi but another make) which I am afraid will break, so I want to 3D print it again so it is more robust. I also want to add a solar light/fan. I will make the structure after I have solved this, but this is my sticking point! Can anyone help me? Thank you!

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