Subject:
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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 13:51:49 GMT
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Viewed:
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845 times
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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
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Message has 4 Replies:
 | | Re: caster wheel design
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| (...) How heavy is this? A caster needs an offset, but making this offset as small as possible should reduce bending. I usually use a medium pulley on a #3 axle; either end of the axle is held in the pin hole of a Technic crossblack, while short (...) (19 years ago, 30-Mar-05, to lugnet.robotics)
| | | 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. (...) (19 years ago, 30-Mar-05, to lugnet.robotics)
| | | Re: caster wheel design
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| I had a similar problem once, when my Cybot had a broken castor - I found that the Lego axle made a snug fit in the cavity intended for it - however it was bending and under a lot of tension. My solution was to use axle-joiners((URL) and 2 unit long (...) (19 years ago, 31-Mar-05, to lugnet.robotics)
| | | Re: caster wheel design
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| Thanks everybody for the answers, but i think i will give up with the caster... The robot will be very heavy... i think it wont work.. I will go to a synchro drive aproach... Thanks. Patrick "Patrick Levy" <omiccron@uol.com.br> escreveu na mensagem (...) (19 years ago, 31-Mar-05, to lugnet.robotics)
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