Subject:
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Re: Excelsior Trolley
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Newsgroups:
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lugnet.trains
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Date:
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Fri, 14 Apr 2006 14:33:32 GMT
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Viewed:
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3063 times
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In lugnet.trains, Brian Davis wrote:
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In lugnet.trains, John Gerlach wrote:
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what is required to turn
a line into a ping pong line?
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A few RCXs and Ross’s programming... <grin>
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(to J-1): He did it with one but I’m not exactly sure how, because, as you’ve
intimated, Ross is the brains in the TCLTC, and I am the bankroll;-)
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Are you detecting the trolleys at the end of the line for reversal? If so,
how (mechanically, optically, magneticly, other...).
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Ross has created a ping-pong loop for our subway modules.
HERE is a pic of one
of the terminals and the RCX brick controlling it. Of the 3 inputs, 2 go the
touch sensors at the ends of the lines, and the third regulates the speed of the
trolley (to account for the hard 180 turn) in addition to the reverse in
polarity.
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And you don’t need
RCX’s... you could do it with mechanically triggered polarity switches, for
instance.
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Interesting. But as I noted above, speed is an issue if you have curves. If
you want your trolley to move along at a nice, slow speed, it will be unable to
make it through a sustained curve, so you need to give it a little goose. Ross
did that based upon trial and error using timed voltage increases.
But for the upcoming show this summer, Ross has actually been exploring
alternate methods such as what you are suggesting. We’ll have to wait and see
up with what he comes;-)
JOHN
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Message has 1 Reply:
 | | Re: Excelsior Trolley
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| (...) My ping-pong line (for my (URL) W tram>, sorry no pics yet) has a dual line with matching points at each end set to normal (straight). As the tram nears the end of the run, the S curve of the point slows it down without me needing to program a (...) (19 years ago, 14-Apr-06, to lugnet.trains, FTX)
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Message is in Reply To:
| | Re: Excelsior Trolley
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| (...) Are you detecting the trolleys at the end of the line for reversal? If so, how (mechanically, optically, magneticly, other...). And you don't need RCX's... you could do it with mechanically triggered polarity switches, for instance. (19 years ago, 14-Apr-06, to lugnet.trains, FTX)
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