Subject:
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Re: Motorizing 9V switch points (translation from french)
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Newsgroups:
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lugnet.trains
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Date:
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Thu, 11 Dec 2003 16:01:36 GMT
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Viewed:
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2609 times
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In lugnet.trains, Philippe Label wrote:
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In lugnet.trains, Jason J. Railton wrote:
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In lugnet.trains, Philippe Label wrote:
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Here is a small review about the motorization of 9V switch points prepared
originally in French for friends from Freelug. With the help of Didier
Enjary for translation, Gaël Frazier for a final proofreading and
Jean-Louis Bergamo (webmaster of Freelug) for publication. Thank you
guys :-)
http://www.freelug.org/article.php3?id_article=186 ...
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That’s very interesting reading. Thanks.
But I’ve never had to modify points to use my controller design. It does
take some time to find elastic bands with the right amount of tension, but
it can deliver just enough power to switch an unmodified point, and still
slip if it is left on too long.
I prefer a directional control with this over-run protection, rather than an
oscillating type with a semaphore.
Jason Railton
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Hi Jason,
Thank you for this additionnal information. Actually, I tested your system on
a new switch point and I did not think of testing several variations of
elastic bands to find the right one. Sorry for misleading readers about your
system. I do prefer too a directional control, rather than an oscillating
one.
Philippe.
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The great advantage of directional control is that you don’t need to look at (or
sense, with Mindstorms) the position of the point. You can apply power for two
seconds and just leave it to operate.
I realise it can be a difficult balancing act between power and slippage,
especially with new points where the switch travel is stiffer.
I do intend to make a new version of this controller. I’m looking at ways of
adjusting the tension in the belt drive, and of fixing the controller more
securely to the point.
Jason Railton
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Message is in Reply To:
 | | Re: Motorizing 9V switch points (translation from french)
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| (...) ... (...) Hi Jason, Thank you for this additionnal information. Actually, I tested your system on a new switch point and I did not think of testing several variations of elastic bands to find the right one. Sorry for misleading readers about (...) (21 years ago, 10-Dec-03, to lugnet.trains, FTX)
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