 | | Re: Automatic decoupler designs?
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On Thu, 6 Jan 2000, Ben Jackson (<Fnx0A5.L6I@lugnet.com>) wrote at 13:03:41 (...) Has anyone thought of using an electromagnet at track level to overpower the magnetic coupling? I've no idea if this would be practical, and it's non-LEGO, but it (...) (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Re: RCX onboard timer and motor pulsing
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A few (Hah!) years ago we used to get that realistic slow train speed by running our Lionel "O" gauge and American Flyer engines on DC. We used an AC Gilbert rectifier that was a full-wave selenium unit. By adding a switch we made it be only (...) (25 years ago, 6-Jan-00, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: Automatic decoupler designs?
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I was working on a hump yard decoupler and was playing around with adding mags to the track using the 2x2 tile that has clips to hold the mag. What's really cool is how you can make a train car hop over the mag on the track. All this play was big (...) (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Looking for 3225 Classic Train
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Does anyone know where I could get a 3225 for a decent price? Anyone have them on clearance locally? I would VERY much appreciate if anyone could help me out. If you wanted to trade for it, let me know too. Thanks. Tim Strutt 8^) (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Re: Automatic decoupler designs?
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(...) If I used a magnet as a core and fixed it so it couldn't rotate, then the electromagnet could be normally off (couples as usual, always forcing the other knuckle to flip over). When you wanted to decouple you'd produce the opposite field and (...) (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Re: RCX onboard timer and motor pulsing
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(...) PWM stands for "pulse width modulation". The LEGO speed control changes voltage as you turn the knob. An RCX turns the motor on and off really fast but always supplies full voltage. So half speed is a 50% duty cycle of full power, rather than (...) (25 years ago, 6-Jan-00, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: RCX onboard timer and motor pulsing
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Hi Ben, I think I missed something here. What is "PWM mode"? What language are you programing in? And what is the "internals page"? Thanks so much for pursueing this! I did pick up the Unofficial Guideo to LEGO MS Robots by Jon Knudsen but only (...) (25 years ago, 6-Jan-00, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: Automatic decoupler designs?
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I wonder if we'll ever see Kadee couplers made specially for LEGO trains? (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Re: Automatic decoupler designs?
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GMLTC had a design for uncoupling, and there have been others posting here speaking of this. Not much hard info is available on the GMLTC design in terms of pictures, but it uses horizontal prying, as you suggest. The idea of a switch engine with an (...) (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Re: Greenberg Shows Newsletter
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(...) The Maryland Agricultural Center in Gaithersburg, MD. Jeff (...) (25 years ago, 6-Jan-00, to lugnet.general, lugnet.trains.org, lugnet.trains, lugnet.dear-lego)
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| | Automatic decoupler designs?
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LEGO train knuckles don't lend themselves to decoupling. Has anyone got a good design (either as part of a switch engine or fixed to the track) design for an automated separator? I'm close to an in-engine (but very ugly) solution which can pry a (...) (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Re: RCX onboard timer and motor pulsing
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(...) I was just experimenting with this a few days ago. An RCX using PWM does a far better job of driving the LEGO train motors than the simple variable voltage from the LEGO train control. You can make a train creep around just above stall speed (...) (25 years ago, 6-Jan-00, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: dressed up a couple of links
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(...) best (...) You did a really great job. I'd like to see a video of it speeding down the tracks with its legs flipping up and down like a real centipede. It wouldn't be a bad idea to add some touch sensor to it so that if you touch its head it (...) (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Re: Shipping from Germany
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I'll vouch for Larry's services but don't expect speedy transactions , there are more important things in life than lego. Mark H. (...) (25 years ago, 6-Jan-00, to lugnet.trains, lugnet.market.shipping)
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| | dressed up a couple of links
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Since the yahoo/geocities page merger, I wasn't able to edit one of my geocities pages until now. I've dressed up a link or two. Including links to my Daylight train. Matt so kindly added a link on lugnet.trains to this page, so I thought it best (...) (25 years ago, 6-Jan-00, to lugnet.trains)
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| | Re: Call for Discussion - Northern CA Lego Train Group
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(...) Great! I'm glad this is getting started. (...) Great idea. I am also planning on attending the show and will help in any way I can. (...) Again, great idea. (...) I'm crazy for them like the masters. (...) I live in San Jose. (...) I think (...) (25 years ago, 6-Jan-00, to lugnet.trains.org, lugnet.trains, lugnet.loc.us.ca.sf)
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| | Re: Greenberg Shows Newsletter
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Where is the GATS show on feb 26-27 going to be at? (...) (25 years ago, 6-Jan-00, to lugnet.general, lugnet.trains.org, lugnet.trains, lugnet.dear-lego)
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| | Call for Discussion - Northern CA Lego Train Group
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Attention all LEGO Train fans: It looks like there might finally be enough people in the San Francisco Bay area now that have the train addiction to get an actual LEGO Train Club going. I would like to propose getting an official train club put (...) (25 years ago, 6-Jan-00, to lugnet.trains, lugnet.trains.org, lugnet.general, lugnet.loc.us.ca.sf, lugnet.loc.us.ca)
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| | Re: Greenberg Shows Newsletter
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I really wish they would spread their shows out a little more. They're coming to Atlanta (the same convention center even) with in 3 months of each other. I really want to find a show in the Spring near Atlanta. Good luck with your shows, I'm (...) (25 years ago, 5-Jan-00, to lugnet.general, lugnet.trains.org, lugnet.trains, lugnet.dear-lego)
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| | Re: Greenberg Shows Newsletter
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(...) When I talked to them about WAMALUG doing the Upper Marlboro show they talked about how impressed they are with the NGLTC's layout. They asked if we wanted to do another show with them in March, but we had to refuse because of a GATS show on (...) (25 years ago, 5-Jan-00, to lugnet.general, lugnet.trains.org, lugnet.trains, lugnet.dear-lego)
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