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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)
| | | | | 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)
| | | | | 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)
| | | | | 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)
| | | | | 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)
| | | | | 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)
| | | | | 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| I uploaded the page - it is originally made my Joe Davenport.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)
| | | | | 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)
| | | | | 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)
| | | | | 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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