Subject:
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Re: Synchro drive in Lego
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 14 Jan 1999 16:15:48 GMT
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Original-From:
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Paul Speed <pspeed@augustschell.comSAYNOTOSPAM>
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Viewed:
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3968 times
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S. Crawshaw wrote:
>
> On Thu, 14 Jan 1999, Paul Speed wrote:
>
> > one of those fancy turntable thingies. What I ended up with was
> > something like this:
>
> > My original thinking was to try and figure out a way to
> > get the whole assembly to want to drive rather than turn without
> > any linking to the plate. (Unfortunately, even with enough
>
> could you not (I haven't tried this!) use a ratchet on the assembly so
> that axle rotation one way turns the assembly, and the other way drives
> the wheel?
Yeah, but I can't think of a good way to ratchet the
assembly.
-Paul (pspeed@augustschell.com)
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> Stuart
>
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 2 Replies:
 | | Unidirectional gearing - was Synchro drive in Lego
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| Here's a really simple (but not fool-proof way): Feed the motor output into a differential gear. The output from the differentials run out through beams and have a medium gear just outside the beam. Then suspend another beam from one end using a (...) (28 years ago, 14-Jan-99, to lugnet.robotics)
| | | Re: Synchro drive in Lego
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| Assuming I have got the design spec right (ie, a wheel which can turn 360+ degrees and drive independently), I have managed to build one from just the Mindstorms bits. But it needs two motors at the moment, since I haven't got a differential left to (...) (28 years ago, 16-Jan-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: Synchro drive in Lego
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| (...) could you not (I haven't tried this!) use a ratchet on the assembly so that axle rotation one way turns the assembly, and the other way drives the wheel? Stuart -- Did you check the web site first?: (URL) (28 years ago, 14-Jan-99, to lugnet.robotics)
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