Subject:
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Re: caster wheel design
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 30 Mar 2005 19:55:51 GMT
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Viewed:
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1034 times
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On Wed, 30 Mar 2005 19:27:21 GMT, Dean Hystad <dean.hystad@mts.com> wrote:
> In lugnet.robotics, Patrick Levy wrote:
> > Hi,
> >
> > I´m tring to build a robot that may use a caster wheel, But i am running
> > some serious problemes in it design. If I use an axle or pin for the caster,
> > it will bend. (the robot is quite heavy). So i tried to use a turntable as a
> > caster axle, but for some reason, it also did not work (the caster does not
> > turn somootly.).
> >
> > Does anybody have some tips for good caster design?
> >
> > Thanks
> >
> > Patrick
Another "microcaster" is the style used in "ERBIE the Robocar"
discussed here http://news.lugnet.com/technic/?n=13601&t=i&v=a made
with a 2x2 turntable, a 2x3 plate, and a single wheel
http://www.brickshelf.com/gallery/ffaat/stuff/microcaster.jpg
This works surprisingly well, so long as 1) The weight isn't huge and
2) the surface isn't too rough. Call it half way between a skid plate
and a full size caster :)
-Rob A>
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Message has 1 Reply:
 | | Re: caster wheel design
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| (...) You can actually do that one better - use a 2x2 plate with offset wheel holder on the bottom, & you can dispense with the 2x3 plate. I browsed Peeron & Bricklink and couldn't locate it, but they're handy for microcasters. (20 years ago, 31-Mar-05, to lugnet.robotics)
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Message is in Reply To:
| | Re: caster wheel design
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| (...) Move the other wheels or the CG so that the caster doesn't support much weight. No matter what your design, a caster that carries a lot of weight will not work well. The large turntables will have a lot of friction when carrying a lot of load. (...) (20 years ago, 30-Mar-05, to lugnet.robotics)
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