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4

Actually there is one such solution from Campagnolo which did not really stick: The general idea was to skip tensor altogether, and recompense change in chain length (distance it travels) by moving sprocket (whole wheel) back and forward. The main disadvantage of such approach was reduced number of speeds you can have in our bike; mainly by disallowing ...


10

The derailleur needs to guide the chain into the sprocket - which means it goes on the bottom. The tension pulley needs to go on the slack side of the chain - which again means it goes on the bottom (the top side of the chain loop has the drive tension). If the drive train was reversed, you could do it. Put the drive wheel in front and steer with your butt ...


10

This would never work due to fact that no force would be transmitted to the rear wheel until the derailleur cage was at maximum extension. The derailleur has to be below the chainstay to allow it to take up the slack in the chain. I suppose you could split the derailleur into to parts, one to keep the chain tension and the other to change gears, but that ...



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