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ikcdab

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About ikcdab

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    https://www.rmweb.co.uk/community/index.php?/topic/157222-charlton-bridge-4mm-brs/

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  • Location
    Taunton, Somerset
  • Interests
    Southern Railway, West Somerset Railway.

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  1. why buy thise when this sort of thing is more flexible, cost effective and easier to use: https://www.ebay.co.uk/itm/123790409463?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=9hOxI6nZQ-6&sssrc=2047675&ssuid=oMX1GZ5VQyG&var=425275799840&widget_ver=artemis&media=COPY
  2. If you want decent running and something which looks the part, then live frog IS the only way to go. It is also far simpler. And dont worry about the point motors - use what you have and just switch the polarity with a miniature relay that can be sited anywhere out of the way. It really is simple to do, the miniature rerlays are very cheap and its very satisfying too.
  3. My railway (see thread in my sig) is housed in a 7.5m x 4.5m shed in the garden. Providing its lined and fully insulated then there will be no damp problems. In the winter i leave an oil-filled radiator on over night but only in the winter months. The fully insulated is the most important part. I have 75mm loft roll in all walls and in the roof andf there is thick polythene underneath the exterior cladding. The shed is raised slightly above the ground so there is air circulation underneath. I actually built my own shed. It really isn't that difficult - its simple carpentry. My fully insulated, lined shed with flooring, electrics and lighting cost me around £3500, homebuilt in 2020. I also wonder why you limit yourself to the PD maximum sizes. You can build a shed whatever size you like if you get planning permission for it. Its not that expensive and worth doing for something that is a long term investment. You could discuss it with your local planning dept and see what they say. And a final thought, if you do stick to the PD maximium sizes, you can still have external tracks which in O gauge are very practical. So a garden railway with the main bits being in your shed.
  4. There are loads of people who will print 3d files for you...but you need to have the file to print from. So unless you can persuade someone to give you a .stl file, then you are stuck with shapeways. Depending on what you are producing, you could use something like fusion 360 and design your own - its not that difficult, depending on what it is you are printing.
  5. Hi Peter, there will be a very gentle curve but not as much as the original!
  6. And here is my version set up on the dining room table. I am really pleased how it looks. Although there are detail differences, and my bridge is double track, the original single, it really has the look and feel. Despite my diagonal girders leaning the wrong way! Next step is the decking. I have already printed some waybeam track bases, just got to finally pin down how to do the decking. I am tempted to just put sheets of plasticard to make a solid deck that I can scribe to look like planks. Haven't finally decided yet, any insights gratefully received!
  7. And so the 3d printer has been working overtime. The main girders are 466mm long so clearly far too long for the printer. I have split them into three sections for printing. For the outer ends, I uploaded one end to the printer then just flipped it mirror image to make to other end. My sharp eyed daughter spotted that the 2024 little date plaque also got mirrored so I have some mirror text. Luckily it's all too small to see really. Here are one set of girders ready to be joined together.
  8. So this is the bridge I am trying to recreate. Little Petherick Creek bridge near Padstow. Made a trip there over Easter and got a lot of detailed pictures Found out a lot. Seems like the square sections at the top of the pillars are hollow...I have designed them as solid granite or concrete pads. Oh well, my bridge is "inspired by" rather than an exact copy!
  9. If you do this, all you will be reporting by the led being on is that you have pushed the button. I'm imagine it might be easy for things to get out of sync and for the panel to display the wrong aspect. You might be better to rig a microswitch to the actual point operating bar. When the point moves, the microswitch is operated and this could trigger a spdt relay to operate one led in one direction and another when the point is lying the other way. If you are using servos on your points then it's easy to rig a microswitch to be triggered when the servo horn rotated. Loads of stuff online about it.
  10. i think that, bearing in mind the "rounding" that goes into choosing resistors from the standard values, the differences are so little that the same resistor fits all for our white/red/green/yellow purposes. For a 12v supply, start with a 1k resistor. You can tweek this as much as you like, but I dont think that it will make much difference to individual colours.
  11. Sat by the lineside by Charlton Bridge Junction waiting for the next train...
  12. That's quite a wide period, could be colletts, Hawksworths or mk1s, or a mix! It would have varied a lot over the period, you're looking at a brake, a restaurant car then a mix of firsts and thirds. You might be lucky enough to find some operating notices, otherwise, photos might be the best bet.
  13. Thanks to both. The bridge is coming on well will post details soon
  14. glue blobs i think you can get transfers - look at the railtec transfer page and search for rivets. Loads come up. Indent with a sharp point 3d print
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