Subject:
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RE: micro motor jam
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Newsgroups:
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lugnet.technic
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Date:
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Thu, 13 Apr 2000 13:47:12 GMT
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Viewed:
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710 times
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> Anyone notice a problem with the little red motors jamming? Working on a
> project of mine, I found that if it runs one way, until it cannot move any
> more, it can't back up either - I have to push it manually, then it can move
> again. Is it just me? did anyone else notice this? and is there a way to
> avoid it?
Yep. It's a common problem. I have 3 of them and they all tend to fail
this way. Be careful that you don't actually JAM the motor. Ther is
a little thermal cutoff that you can actually hear clicking when
the motor is overloaded. It might take a few seconds to reset.
Cheers,
Ralph Hempel - P.Eng
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Check out pbFORTH for LEGO Mindstorms at:
<http://www.hempeldesigngroup.com/lego/pbFORTH>
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Reply to: rhempel at bmts dot com
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Message has 1 Reply:
 | | Re: micro motor jam
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| (...) When I took a jammed micromotor apart, I could not find any thermal cutoff circuitry at all. What I did find was that the internal gears use very small teeth, but there was enough freeplay in the gears' rotational axis that it was easy to get (...) (25 years ago, 13-Apr-00, to lugnet.technic)
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Message is in Reply To:
| | micro motor jam
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| Hey all, Anyone notice a problem with the little red motors jamming? Working on a project of mine, I found that if it runs one way, until it cannot move any more, it can't back up either - I have to push it manually, then it can move again. Is it (...) (25 years ago, 13-Apr-00, to lugnet.technic)
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