Subject:
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Re: lego Technic "class"
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 29 Oct 1999 22:39:55 GMT
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Viewed:
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7209 times
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In lugnet.robotics, Stephen Unwin writes:
<...snip...>
> As an aside, has anyone had trouble with motors seizing up? I have had 4 of
> the geared motors before the two in RIS and one in Cybermaster. One is ok, two
> cannot be turned by hand and one has stopped altogether. Having completely
> dismantled the seized motor I discovered a fine black magnetic powder inside.
> Taking the motors apart is not to be recommended. Even popping the back off
> carefully can make a mess of the case.
I've never seen this, but I recall hearing somebody discuss this recently. It
might be a quality control problem having to do with adhesive getting worn off
and gumming up the gears. Apparently, different motors have different amounts
of goop inside.
I got a bad motor in my original RIS, (had a broken winding) so after I got a
replacement from TLG, I tried to open it up out of curiosity. I messed up the
case a bit before I noticed that the motor housing has four "hollow" studs on
the top that snap the case together. I think you can open the case by pushing
four paper clips (or other pointy objects) into these holes to release one
side of the case. But by the time I noticed this, I was already inside.
I never got the guts out in order to see the internal gearing since the actual
motor seemed to be wedged in there pretty well. So I whimped out and put it
back together. (Is there some trick to getting the guts out?)
Now I use the bad motor as a place-holder when I need to borrow a motor from
one of my existing robots. I've found that they hold together better on the
shelf if they're fully assembled.
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Message has 2 Replies:
 | | Re: lego Technic "class"
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| Chris Phillips wrote in message ... (...) pushing (...) Chris, Thanks for the insight! They say, curiosity killed the cat.... Good thing I'm not a cat! I opened one of my motors and took photos for everyone to enjoy. (URL) Chris, I also was unable (...) (27 years ago, 31-Oct-99, to lugnet.robotics, lugnet.technic)
| | | Re: lego Technic "class"
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| (...) Actually, the reason I'm looking here is because I had a motor die recently for no apparent reason. It's become really difficult to turn the spindle by hand and it only gives about 100 RPM instead of the nominal 360. I HAVE found a good way to (...) (25 years ago, 14-Sep-01, to lugnet.robotics)
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Message is in Reply To:
| | Re: lego Technic "class"
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| (...) *snip* As a somewhat Bizzare experiment, I have run a LEGO motor from the battery box controller as supplied with motor set 8735. The motor is placed next to a Pick-up on an electric guitar plugged into an electronic tuner. With the motor (...) (27 years ago, 29-Oct-99, to lugnet.robotics)
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