Subject:
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Re: Point Motor Instructions
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Newsgroups:
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lugnet.trains
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Date:
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Thu, 31 Jan 2002 15:52:47 GMT
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Viewed:
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418 times
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In lugnet.org.ca.rtltoronto, Jeff Elliott writes:
> Hi folks,
>
> I still occasionally get requests for information on my old automatic point
> motor. Well, I've long since moved to a more compact and reliable model, and
> after the rtlToronto Train3 show last weekend, I've decided to post the
> instructions for the new model.
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=10867
>
> This arrangement continuously cycles from one direction to the other - it's up
> to the operator to stop the motor when the desired position is reached.
>
> When run from a 6xAA battery box or train regulator, I've had no trouble with
> this setup, even on sticky points.
>
> I usually use a polarity switch setup on a single train reg to run each loop,
> siding, and point motor in any desired combination.
>
> Note - you'll have to build the mirror-image of the model if you wish to use
> the other 'handedness' of point. Not a difficult proposition, I'll leave it as
> an exercise to the student :)
>
> Jeff Elliott
Jeff -
That looks like a very tight and solid design. I've made some reciprocating
designs for point motors, but they all had some slop built into the design
that lead to some delay in the switching action. On the outside (I haven't
built it yet) your design looks like there's really no significant delay in
action. Do you have to plan ahead for the action as the train approaches
the switch? It's great to be able to have a very quick response when you
realize last minute that a collision's about to happen.
The functionality from an full throttle 9v train regulator or 6AA battery
box is important, and it sounds like you've test your design with that in
mind. Sure beats setting reduced power settings and using 9v train
regulator output, don't you think? Less wiring, no wrong power setting
mistakes, available to others to do the swithcing at train shows, etc.
Thanks - nice work!
Ed
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Message has 1 Reply:
 | | Re: Point Motor Instructions
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| (...) I built Jeff's motor design, and I can answer these questions now... This design is really much better than most I've seen, as it passes many benchmarks for low number of pieces, predictable motion, solid switching, and remains integral after (...) (22 years ago, 8-Feb-02, to lugnet.trains)
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Message is in Reply To:
| | Point Motor Instructions
|
| Hi folks, I still occasionally get requests for information on my old automatic point motor. Well, I've long since moved to a more compact and reliable model, and after the rtlToronto Train3 show last weekend, I've decided to post the instructions (...) (22 years ago, 25-Jan-02, to lugnet.org.ca.rtltoronto, lugnet.trains)
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