Idea of DR4B alternative

  1. 10 months ago
    Edited 10 months ago by iamdavex

    Build a DR4B robot need lots of c-channel, so we were finding new design that use less c-channel, therefore we can build the third robot, then this idea hit my mind some days before. We were wondering whether it works or not.

  2. Dokkaebi

    6 Jan 2018 Deal with it I like chocolate

    Interesting, but you are losing the added height of the middle part of the DR4B that you removed. Also, making something that has to lift so much with chain makes for a significantly less stable lift.

  3. 8232X

    6 Jan 2018 NH 8232X

    It sounds doable. We had a lift made of 2 chain bars mounted together that worked ok, not great, but certainly usable.

  4. Download Complete

    6 Jan 2018 Greater London, UK 7975F

    There was a thread on this a few months ago.

    https://www.vexforum.com/index.php/28363-double-reverse-chain-bar

  5. @Download Complete There was a thread on this a few months ago.

    https://www.vexforum.com/index.php/28363-double-reverse-chain-bar

    It is very similar idea. The 30 tooth sprocket and 15 tooth tank sprocket is the only pair that is ratio 2:1 I can find.
    I made try, the 30 tooth sprocket is too large.

  6. Download Complete

    7 Jan 2018 Greater London, UK 7975F

    What about 6 and 12 tooth or 12 and 24 tooth sprockets?

  7. Scott_kalaf

    12 Jan 2018 California 2496Y

    Interesting idea, however I would be concerned about gears slipping... which is why a dr4b is used more often. It a), has a little more height than this, b) has a lower chance of slipping, and c), I can't think of a way to tension this. However, you can try as I have not seen something like this before.

 

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