Subject:
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Re: Motor and Generator
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 10 Aug 2000 23:53:30 GMT
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Viewed:
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969 times
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in article 3992BF3C.617C7D78@mpifr-bonn.mpg.de, Edmund Nussbaum at
en@mpifr-bonn.mpg.de wrote on 8/10/00 7:42 AM:
> Hi
>
> I just coupled two 12V Motors with a electrical cable
> and if you rotate the axis of the one then the axis
> of the other motor also rotates.
>
> Of course, everybody knows that motors of this type
> can also be used as generators, but I didn't expect
> such a good efficienty factor.
I calculated a 97% efficiency with moderate speed (hand-cranked) and no
load.
Add a load, and of course the efficiency drops pretty quickly.
>
> With this configuration turning moment can be trans-
> mitted via cable. Axis can be extended as far as the
> cable is. And you don't need any batteries.
>
> One can imagine plenty of applications for that.
I haven't come up with anything useful. Usually, instead of wasting a motor
to make a generator, I use a battery power source instead.
I HAVE come up with something fun, though!
http://www.rdrop.com/~dougw/lego/cranker.html
Be careful - don't crank too energetically or you could damage the
"generator". It's not made to be turned manually.
>
> eddy
--
Doug Weathers, http://www.rdrop.com/~dougw
Portland, Oregon, USA
Don't spam me - I know how to use http://www.spamcop.net
"On a clear disk you can seek forever"
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Message has 1 Reply:
 | | Re: Motor and Generator
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| I have used two motors connected via cable as part of a limited slip differential in my Honda NSX model (rear wheels). Basically, each wheel has a motor connected to it, and when one wheel turns, the other wheel wants to turn too. But since a (...) (24 years ago, 11-Aug-00, to lugnet.robotics)
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Message is in Reply To:
| | Motor and Generator
|
| Hi I just coupled two 12V Motors with a electrical cable and if you rotate the axis of the one then the axis of the other motor also rotates. Of course, everybody knows that motors of this type can also be used as generators, but I didn't expect (...) (24 years ago, 10-Aug-00, to lugnet.robotics)
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