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| Power to lift out baseboard section (Bridge) - Baseboards. - Getting You Started. - Your Model Railway Club | ||||||||||
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Ed Full Member 
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Not sure if this should be in the electrical section or here, but I'm making some changes to Latton Fields which will involve including a small (approximately 3ft) lift out section and was wondering about power. I could, as I have done before, just have a plug and socket on trailing leads to connect power (Bus) from the main baseboard(s) to the lift out section. But being lazy, I was wondering if anyone had tried having some sort of contact strips on the end(s) of the lift out section which just press on contacts on the edge of the main boards when the section is put in place. I found Doug's rather clever spring connections ........... http://yourmodelrailway.net/view_topic.php?id=3303&forum_id=21&page=2#p57665 but I was wondering if anyone had just tried contact strips or plates similar to mentioned here (3rd post down by 'richhotrain').. http://cs.trains.com/mrr/f/11/t/185238.aspx Ed ____________________ Engineers just love to change things |
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Chubber Casseroled Badger 
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Bearing in mind I am in the throes of a pre-prandial RLW-Look at these.... http://www.ebay.co.uk/itm/10-Sets-Magnetic-Bag-Clasps-Brass-Handbag-Clothing-Sewing-Buttons-14mm-/250901897389 Positive location, self aligning, and obviously very secure [I have tried to get into SWMBO's handbag] Being metallic they may be 'solderable'? Another thought has entered the space known as 'My Mind'.....The little pushy spring things inside a ceiling light lamp holder [complete with screw fitting for the wire] could be used with the above magnetty things to bear on a metal contact plate.... Doug [Damn, I'm clever...must drink more RLW!] ____________________ 'You may share the labours of the great, but you will not share the spoil...' Aesop's Fables "Beer is proof that God loves us and wants us to be happy" - Benjamin Franklin In the land of the slap-dash and implausible, mediocrity is king |
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Ed Full Member
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Interesting Doug, but a bit small (1/2"). If you scroll down a bit it says the material is brass, but brass isn't magnetic  Thought someone might have used strips....  ____________________ Engineers just love to change things |
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Chubber Casseroled Badger
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Ed, there is a neodymium magnet inside the brassed casing...'Strips' are fine, it's the positive repeatable alignment that's important, the catch on SWMBO's handbag is an absolutely self centering. Doug ____________________ 'You may share the labours of the great, but you will not share the spoil...' Aesop's Fables "Beer is proof that God loves us and wants us to be happy" - Benjamin Franklin In the land of the slap-dash and implausible, mediocrity is king |
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Ed Full Member
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Already been thinking about magnets for alignment Doug, as I'm using them for uncoupling. Maybe a couple of recesses in the face of the lift off section and matching recesses in the baseboard face, with neodymiums (super) glued in Meanwhile someone on another forum has suggested copper strip, so maybe a bit of both. Ed ____________________ Engineers just love to change things |
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BCDR Moderator 
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Hi Ed, The issue with non-sprung and sprung contacts is the old "four level legs" one. How heavy is the lift-out section? Sprung ball-bearing types would probably be better. I gave this some thought several years ago, and came up with sliding switches on the sides (the innards of Atlas DPDT switches) rather than contacts underneath. Bulletproof way is to have an elevated or swinging section hard wired to the bus. Which is what I did first (elevated). You could of course wire the lift-out section as normal, just make sure the wiring is long enough so that the section can be stored at the side (put some brackets on the side with hooks on the lift-out section) or underneath on a shelf. Which is what I ended up doing using coiled power cable (13 amp 16 gauge, plenty enough for my DCC system). You can get this for around £3-£12 in the UK (kettle cable or car electric socket cable). Make it really is portable by using a socket/plug connection to the bus wires. Presumably this is to allow access into a room. If it's DCC it's worthwhile considering a star bus design if the total linear run is long (over 30-40 feet). Nigel ____________________ ©Nigel C. Phillips |
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Ed Full Member
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Hi Nigel It's just a small non scenic section (bridge), to get the trains to the other side of the garage layout. As I mentioned I could connect it with a pug and socket, but I'm just trying to see if I can make the bridge it's own switch by just removing and replacing it. Ed ____________________ Engineers just love to change things |
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Silver Fox Deceased Member 
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Ed I have copper plate under my bridge it works fine on it`s own the wieght of the bridge is sufficient to make the contact,just remember to leave a gap between the rails,or short outs will occur(he said teaching gran to suck eggs)    Owen ____________________ web-cam http://82.2.74.174:8081 if the lights are off no cam |
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Ed Full Member
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Brilliant Owen, sounds like it's a goer. I've just ordered some brass strip as opposed to copper as I was a bit concerned about damage with the bridge being continually removed and replaced. No problems with the strips needing frequent cleaning I assume and thanks for confirming the weight of the bridge should maintain the connection. I was a bit concerned about that and can't understand why, despite a lot of web searching, not many people seem to do it this way. (Worst case scenario, I can use the cables with plug and socket I've already got.) Ed ____________________ Engineers just love to change things |
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katwigan Full Member
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I used some car cigarette lighter plugs, it's spring loaded, there is a pair of contacts inside the body to wire to, and they can be operated by the wooden frame work or anything that is rested on them, with a couple of neatly fitting door 'bolts' to ensure it is in position, hasn't failed yet in several years Kevan Derrr , I use them to isolate the power to the tracks either side of the lift up, head is a bit fuzzy this morning. Suffering windscreen wiper syndrome, Dumb guy dumb guy,K |
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Ed Full Member
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That's another good tip, thanks Kevan Ed ____________________ Engineers just love to change things |
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The Q Full Member
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The simplest system I've seen, used 4mm bannana plugs and sockets, FIXED to the underside of the bridge and to the inside of the bridge abutments. The 4mm plugs and sockets are designed to carry power and reliable, I use them everyday at work, there are some just 3 inches away from this keyboard. A quick look at Amabay says that lot pictured would arrive at your door for £2:10 including postage.  ____________________ Now I've finally started a model railway...I've inherited another... |
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| This is topic ID = 14487 Current time is 09:27 pm |
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