 | | using a european 12v transformer in the UK
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hi does anyone know weather it is safe to use a european 12v transformer with a straight forward euro/uk plug adapter. i suppose the output would be the same but would the extra uk voltage burn out he transformer? thx for any help paul (21 years ago, 1-May-03, to lugnet.trains)
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| | Re: drawbridge
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"James Powell" <wx732@freenet.victoria.bc.ca> wrote in message news:HE4yp6.15uI@lugnet.com... (...) span (...) building (...) since (...) (rope (...) Just a thought when reading this thread: If you have trouble with motors that do not run with the (...) (21 years ago, 1-May-03, to lugnet.technic, lugnet.trains)
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| | Bugs Train Display
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This weekend Sat 3-Mon 5 BUGS (Brisbane Australia) are at the 26th Brisbane model train show. This is to be held at the RNA showgrounds. Photos and report will be posted after the event. (21 years ago, 30-Apr-03, to lugnet.loc.au, lugnet.org.au, lugnet.town, lugnet.trains, lugnet.trains.org)
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| | Re: Vertical lift spans (was: Re: drawbridge
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Well put Ben. I have seen Ben's steel bridge (and helped re-rig the cables to the pulleys after a minor anomaly), and I can attest that it is truely one of the finest LEGO bridges in the AFOL community, or in the world for that matter. It is very (...) (21 years ago, 30-Apr-03, to lugnet.technic, lugnet.trains)
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| | Truss Design Programs
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I've made available two Excel spreadsheets that aid in the design of trusses. All details are explained on the webpage: (URL) programs can be used to size the members of trusses. They have their limitations, and do not cover all types of trusses, (...) (21 years ago, 30-Apr-03, to lugnet.technic, lugnet.trains, lugnet.build) !
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| | Re: First Third Party product for the LEGO(r) Trains market?
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I don't think our club has any problem with oxidized track. But some of our club track is pretty grimy. I mean actually, visibly grimy. Probably, it's 10 years worth of electrical carbon and finger oil and dust, combined to make a quite non- (...) (21 years ago, 30-Apr-03, to lugnet.trains)
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| | Re: First Third Party product for the LEGO(r) Trains market?
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I had the same thought. Here's a few more I did last night of the point at which the motor's wheel touches the rail. They're a bit closer. (URL) surprised at how small the point of contact is, but it does explain the incredible reliability of (...) (21 years ago, 30-Apr-03, to lugnet.trains)
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| | Re: First Third Party product for the LEGO(r) Trains market?
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One more followup from Zonker, with pictures - - - I've spent the evening jousting with bad bits on my hard disk, so no progress on the web page tnight (it's only half-ready...) BUT, I did take some more pictures, based on the discussions here. Most (...) (21 years ago, 30-Apr-03, to lugnet.trains)
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| | Re: Lego track cleaner
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(...) That is cute ... and psychedelic! (...) ... and makes mine look a bit tame. Time for a rebuild! Any ideas for mechanical operations ... or a vacuum cleaner etc? (...) (21 years ago, 30-Apr-03, to lugnet.trains)
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| | Re: Vertical lift spans (was: Re: drawbridge
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(...) OK, this is similar, but first take a walk down to the local auto repair shop and see if you can look at a 'cats cradle' type auto hoist. Here is my description. It involves one string to lift one end of the span and another string, which is (...) (21 years ago, 30-Apr-03, to lugnet.technic, lugnet.trains)
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| | Re: drawbridge
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(...) I used a single motor, with all cables being passed above the top of the span to get to the far side (4 cables). One trick that I would do if I was building another one is to make the cable drums easier to adjust to one another, since they (...) (21 years ago, 30-Apr-03, to lugnet.technic, lugnet.trains)
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| | Vertical lift spans (was: Re: drawbridge
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Not sure where to chime in, so I'll jump in here. Regarding the lifting of vertical lift spans: I've built many of these over the years and my latest version (yet to be published on the internet) takes advantage of an engineering survey done on one (...) (21 years ago, 30-Apr-03, to lugnet.technic, lugnet.trains)
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| | Re: drawbridge
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(...) I believe your are right Steven, if two identical motors were connected in an identical way they would run at the same speed provided they had identical loads. But nothing in this physical world is identical and that is why stepper motors and (...) (21 years ago, 29-Apr-03, to lugnet.technic, lugnet.trains)
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| | Re: drawbridge
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(...) Yes, roger that. I get it :-) I can easily write a sheet to do that. Actually, I have one! But it's geared towards an arched bridge with suspended deck. I'll get these sheets to the public soon! -TJ (21 years ago, 29-Apr-03, to lugnet.technic, lugnet.trains)
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| | Re: drawbridge
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(...) well since i was basing my theory of working with stereos and lights on my car, you have the uperhand...lol (21 years ago, 29-Apr-03, to lugnet.technic, lugnet.trains)
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| | Re: drawbridge
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That might very well almost hold true (I am no expert) if your motors were hooked up like: [power]--------[moto...---[motor] (parallel circuit) But I have mine hooked up like: [motor]--------[powe...---[motor] (parallel circuits) I assume one motor (...) (21 years ago, 29-Apr-03, to lugnet.technic, lugnet.trains)
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| | Re: Lego track cleaner
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I uploaded the page - it is originally made my Joe Davenport. I was looking for it, and he sent me the pictures lately as he does not have a homepage anymore. (URL) this one too (URL) Jensen <sonnich@hot.ee> wrote in message (...) (21 years ago, 29-Apr-03, to lugnet.trains)
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| | Re: drawbridge
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(...) the length of the wire has nothing to do with the speed. the problem is that one motor, the first one on the line, is getting most of the power. the motor at 9v, 12v or 115v that doesn't mean thats the exact amount of power that it uses, it (...) (21 years ago, 29-Apr-03, to lugnet.technic, lugnet.trains)
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| | Re: drawbridge
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(...) I've thought of a simpler way of describing my system. Basically you have a rope stretched between two towers. If you pull the rope the span goes up, release it and the span goes down. The wire is connected to the lift span at both ends via (...) (21 years ago, 29-Apr-03, to lugnet.technic, lugnet.trains)
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| | Re: drawbridge
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(...) my description was not that good. here is how the diagonals are on my bridge: / | \ | \ | \ | \ | / | / | / | / | \ and the diagonals in the spreadsheet: / | \ | / | \ | / | \ | / | \ | / | \ (hope my ascii art turns out ok) so only 2 of the (...) (21 years ago, 29-Apr-03, to lugnet.technic, lugnet.trains)
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