Subject:
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Re: My first MOC locomotive
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Newsgroups:
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lugnet.trains
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Date:
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Wed, 14 Mar 2001 20:03:06 GMT
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Viewed:
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1054 times
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In lugnet.trains, Dwayne Towell writes:
> If you thought you needed my approval, consider it given, but I don't think
> you need it. I didn't use a normal train plate. I put the 9V motor as low
> as I could in the design--I actually built the "fuel tanks" around it so it
> kept the center of gravity very low, possibly below the bogies. Also I
> recommend a loose coupling between the fans and the motor to allow some
> tolerance for curious fingers. I used a 3:1 (8:24) gear ratio, the blades
> are not a blur but clearly are fast at top speed and still noticeably turn
> at the lowest setting. An unusual/unexpected side effect occurred--moving
> the train by hand causes the fans to turn since the train motor acts as a
> generator to power the 9V motor. This leads most people to assume the fans
> are physically (via gears) connected to the wheels and wonder what the
> linkage is like.
Dwayne's is a much more massive engine, and is a lot more stable than mine
to begin with. I hadn't thought about the effect of fingers on the fans-
perhaps a belt drive with a rubber band would be a good idea. I wish I'd
taken the opportunity to see the insides of his- after working on this, I
have more appreciation for the technical difficulties.
Pictures, Dwayne, pictures! I seem to recall a lot of your newer creations
at the GATS show that aren't on your web site (or the club's).
--
Tony Hafner
www.hafhead.com
www.pnltc.org
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Message is in Reply To:
 | | Re: My first MOC locomotive
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| (...) If you thought you needed my approval, consider it given, but I don't think you need it. I didn't use a normal train plate. I put the 9V motor as low as I could in the design--I actually built the "fuel tanks" around it so it kept the center (...) (24 years ago, 14-Mar-01, to lugnet.trains)
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