Belt Drive Mechanism MkII

Sun, 30 Oct 2011

A belt drive with two drive wheels is useful for transmitting rotary motion from one place to another. By changing the size of the wheels it is also possible to change the speed of rotation. I've put together a couple of new pinions for the Belt Drive model, one with four teeth and one with twelve teeth.

I fitted these into a box and joined them with a belt. I've added the drive handle to the twelve tooth wheel. Turn the handle and the small wheel spins round three times as fast (12/4) as the drive wheel. 

I could have fitted the handle to the other wheel and had the speed reduced to a third. 

I've added these parts to the belt drive download. If you have already downloaded it, re-download now to try this model out. The instructions for construction are basically the same for both projects.

I'm pleased with the way that this mechanism is working, time to start fitting it into a character based automata! 

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Comments (2)

  • ijustgolf March 12, 2012 at 6:27 pm

    Ay Rob…   Long time….

    Ay Rob…   Long time….

    I was catching up with your new blogs and noticed the House of Automata (sweet)..  then i wondered how the belt drive would work as opposed to the gear drive i'd been working around..   having raced bikes, i know the reliability and durability of chain drives..  and i was trying to figure out how to make a paper chain more durable..   i considered using film instead of paper, but thats not paper..  then i figured what if, i apply a layer of glue to each side of the printed chain before cutting it out..?

    your thoughts..?   hope all is well..   Bob (gum)

    I wonder if a toothed belt made like the rack in the Flip Face model would work. – RI

    • michael42er March 14, 2012 at 6:29 pm

      Hello ijustgolf,
      The belt

      Hello ijustgolf,

      The belt drive works very reliably. Better than I thought. I have a good firm paper (cardboard) used 210g/m². No artist paper or water color paper. You can strengthen if necessary the back with masking tape (crepe paper), how they use the painters. Foil or film would be a style break !


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