Subject:
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Re: The Great Ball Contraption
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 21 Jan 2005 15:41:16 GMT
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Viewed:
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5058 times
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> > > keeping tension in the tread links is proving
> > > difficult. Any ideas on how to do that?
> >
> > If you need constant tension, one way to do it is tensioner. A third gear in
> > the chain, that can be moved in and out changing the shape (& therefore
> > length) of the triangular chain path. This doesn't have to be hand-tuned
> > either - use a idler gear on a small free-swingin arm that is held in tension
> > by a weight or rubber band.
>
> Heh, once again my over-engineering defeats me. I tried using two shock
> absorbers to push a gear into the hanging part of the chain, but they just
> torqued the gear so that the chain wouldn't move. I should always try the
> simplest approach from now on. Thanks for the tip.
I'm not exactly sure how many "teeth" = 1 stud, but I know it's not a whole number.
So, I've found if you can change the length by 1 or 2 studs, and add a few chain
links, you don't need to add a tensioner.
Steve
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Message has 1 Reply:
Message is in Reply To:
 | | Re: The Great Ball Contraption
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| (...) I don't know if it fits into the standard or not. I didn't plan on using it as my first device, anyway. I'm going to build a simple large hopper for the previous person's contraption to feed into mine, and then I'll have a feed chute or (...) (20 years ago, 21-Jan-05, to lugnet.robotics, FTX)
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