Subject:
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Re: motorized points - beating a dead horse
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Newsgroups:
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lugnet.trains
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Date:
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Fri, 1 Dec 2000 00:21:31 GMT
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Viewed:
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1166 times
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"sebarile-MOBL" <steve.e.barile@intel.com> wrote in message
news:G4v1EK.6yF@lugnet.com...
> Hi All,
> Currently I am attempting to build an automated hump yard. The main • problem
> I'm tackling is the RCX controlled motorized points. I've spent 7 hours • over
> the last two days trying to build a motorized switch track that will run
> forever with out ripping itself off the base plates and be very • *forgiving*
> at the edges of both states, turn or straight. What I mean by forgiving is
> that the motor doesn't burn up or the gears do not get stripped off.
<snip>
> Any ideas? Help?
> SteveB
> PNLTC
If you don't mind a touch-sensor, you could try this one:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=1438
This automated point sports 1000+ cycles (175 msec switch time) without a
glitch.
Mario Ferrari built a sensorless (obviously without feedback) version, and
it still performs fairly well.
The RCX program needed is very simple (a few rows of NQC code). I can post
it if you want.
BTW, I used two of them in an automated yard you can see here:
http://www.itlug.org/
(go to "Events", "Legofest VI")
Cheers
Carlo
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Message has 2 Replies:
 | | Re: motorized points - beating a dead horse
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| Carlo, Thanks for the reply! Why use the hinges and 1x2 with rail plate? Is this to strengthen the housing? In my attempts I added a 1x2 plate under the 2 hole 1x6 plate and no 1x4 tile underneth. I can't seem to get to the automated yard picture (...) (24 years ago, 1-Dec-00, to lugnet.trains)
| | | Re: motorized points - beating a dead horse
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| Carlo, I built this version (see link below) and still the motor tears itself of the plates, once the gear teeth ride up on the top of the rack teeth. If I reduce the power level thru the RCX then there isn't enough torque to overcome the (...) (24 years ago, 3-Dec-00, to lugnet.trains)
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Message is in Reply To:
| | motorized points - beating a dead horse
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| Hi All, Currently I am attempting to build an automated hump yard. The main problem I'm tackling is the RCX controlled motorized points. I've spent 7 hours over the last two days trying to build a motorized switch track that will run forever with (...) (24 years ago, 30-Nov-00, to lugnet.trains, lugnet.robotics)
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