 | | Motorized Switch —James Brown
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| | | For NALUG's upcoming show in September, I volunteered to design a motorized switch, and here is the result: (URL) very straightforward, and doesn't use much in the way of rare parts; excepting the motors, I could build a dozen of these fairly (...) (22 years ago, 4-Jun-02, to lugnet.trains)
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| | | | | Re: Motorized Switch —James Brown
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| | | | (...) I realize .trains is a little slow right now, but I'm still a little surprised that this sank without even making a ripple in the surface. I know at least a couple people have gone to look at it, with 300+ views on the folder... I was hoping (...) (22 years ago, 6-Jun-02, to lugnet.trains)
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| | | | | | Re: Motorized Switch —Jason J. Railton
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| | | | (...) It's not that, it's just this has been gone over several times before, and I'm afraid it will take a major revolution to get a new design noticed. Your's is a neat and simple design, and a new way of gripping the slider. But, it's not a very (...) (22 years ago, 6-Jun-02, to lugnet.trains)
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| | | | | | Re: Motorized Switch —James Brown
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| | | | (...) Ok, I guess I see that, although I could only find a couple designs, and they seemed much more complicated that necessary. (...) Hmm. Is motor damage likely to occur? The intention with this would be for either an operator or an RCX to briefly (...) (22 years ago, 6-Jun-02, to lugnet.trains, lugnet.technic)
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| | | | | | Re: Motorized Switch —Thomas Avery
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| | | | | (...) I've always been hard on my motors, stalling them often. It's never seem to affect their performance, or even damage them. The difficult part of stalling a geared motor is containing the large forces generated on the structure surrounding the (...) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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| | | | | | | Re: Motorized Switch —Ross Crawford
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| | | | | | (...) Yep, and with this one using an 8-tooth gear straight on the rack, even with a solid structure you'd be very likely to break the gear. If you can supply an accurately timed "pulse", that would reduce the risk, but with the geared motors, it (...) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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| | | | | | | | Re: Motorized Switch —James Brown
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| | | | | | (...) Hmm, Ok. Since it sounds like I'm not risking the motor, and I have lots of 8 tooth gears, I'm going to experiment by leaving the motor on for a while, and seeing what happens. thanks very much for the information, guys! This is exactly the (...) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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| | | | | | | | Re: Motorized Switch —James Brown
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| | | | | | (...) Well, some good, some bad. The good is that leaving the motor going in one direction for 20 minutes causes no separations and no apparent stress to any parts. The bad is that it did overheat the motor, which wouldn't run again until it cooled (...) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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| | | | | | | | Re: Motorized Switch —Ahui Herrera
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| | | | | | | <SNIP> troubleshooting time on this assembly. (...) Will you be posting a new .mpd file to your brickshelf account showing the changes? BTW the othe .mpd file was *not* right. What I mean by that is that usually when one creates a .mpd file the (...) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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| | | | | | | | | Re: Motorized Switch —James Brown
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| | | | | | | | (...) Yes, I'll update it tomorrow; I don't have MLCAD installed at home. Sorry about the poor .mpd; this is not just my first motorized switch, it's my first time using MCLAD. :) (...) Thanks! I owe a lot to other people who have done these in the (...) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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| | | | | | | | | | Re: Motorized Switch —James Brown
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| | | | | | | | (...) The instructions are updated: (URL) moved the completed model back to the top of the .mpd, although that makes the instructions feel backwards to me. thanks, James (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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| | | | | | | | Re: Motorized Switch —Thomas Avery
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| | | | | | (...) 20 minutes?!?! Yikes! I've stalled my motors often, but only for a few seconds. I imagined that would be the same situation for your switch. Leaving it on for 20 min- you're boldly going where no Technic-head has gone before... ;-) TJ p.s. I (...) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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| | | | | | | | Re: Motorized Switch —James Brown
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| | | | | | (...) I've had a couple people say that now. :) (...) Normally the switch won't even have it stalled for a few seconds; it takes less than a second of power to flip the switch over. Just tapping the button isn't *quite* enough time, but it's not (...) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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| | | | | | Re: Motorized Switch —Juergen Stuber
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| | | | (...) Take a look at this thread: (URL) Jürgen Stuber <stuber@loria.fr> (URL) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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| | | | | | Re: Motorized Switch —James Brown
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| | | | (...) I had looked at that thread a while ago for ideas, but skipped a lot of the suggestions because they involved sensors or complex-seeming technic assemblies. Looking through it again, I find that my switch is *very* similar to Carlo Ottolina's (...) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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| | | | | | Re: Motorized Switch —Carlo Ottolina
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| | | | "James Brown" <galliard@shades-of-night.com> wrote in message news:GxCEMC.Ayo@lugnet.com... (...) the (...) Hey! That's me!... (...) (NALUG) (...) Mario Ferrari built a sensorless version of my switch that worked well enough. I had to use the (...) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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