Subject:
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Re: motorized points - beating a dead horse
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Newsgroups:
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lugnet.trains, lugnet.robotics
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Date:
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Fri, 1 Dec 2000 07:31:51 GMT
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Viewed:
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3159 times
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Michael
I can't seem to get to your URL. Can you check it and reply. I really can't
wait to see what you have done.
SteveB
In lugnet.trains, Michael Lachmann writes:
> You could try my switch - http://www.users.xpoint.at/m.lachmann/default.htm
> look out for Lego and Models ... I build this thing using a rubber-band so
> you can let it run without the switch destroying itself. Just let the motor
> run a view seconds until the point switches it's position.
>
> Michael
>
> sebarile-MOBL <steve.e.barile@intel.com> schrieb in im Newsbeitrag:
> 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.
> >
> > I like really simple and elegant solutions. For instance I would like to • be
> > CPU switched with no feedback, again forgiving at the edges of both states
> > such that the motor can spin for 1.5 secs and not reap havoc. Hanging
> > elaborate clutch systems with differentials and angle sensors would not be
> > my first choice. Of course beggers can't be choosers.
> >
> > Yes I have tried a bunch of slip gear configurations and the 2.5N/cm • doesn't
> > seem to over come the internal detent.
> >
> > Yes I looked at several designs on the web, I could have missed something.
> >
> > After at least 10 iterations I am still staring at a desktop full
> > of disassembled bricks.
> >
> > Any ideas? Help?
> > SteveB
> > PNLTC
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