Subject:
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Re: can you use the old type 9v motors with the RCX?
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 11 Sep 2002 04:47:48 GMT
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Viewed:
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852 times
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On Tue, 3 Sep 2002 13:50:27 GMT, Jonathan Wilson <jonwil@tpgi.com.au>
wrote:
> Can you use the old type rectangular motors with the RCX?
Yes, very happily. They just don't have any torque to speak of so
you'll need to gear them down. The problem is that if you gear them
down to the point where they have as much torque as the modern gear
motors do, you'll find they still don't perform as well. Too much
energy is lost in building a Lego gear train. The built-in gears of
the new motors are much more efficient. Use them instead if you can
(unless it's speed under very light loads that you need).
Micro motors also work B.T.W. as to do old 4.5V (60's and 70's era)
motors although in their case, the modern wires are sometimes a little
hard to connect. I've also never run one for an extended period of
time. For short bursts, the motor doesn't get noticeably hot and the
RCX has built-in overload protection anyway, but has never used it in
this application (for me anyway).
Matthias Jetleb
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