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Everything posted by Spotlc

  1. Hi John, I've also drawn a blank when sourcing very tiny switches for BPRC, and I've got round this when using a PP3, by making up a battery holder where the battery can be easily removed, becoming, in effect the switch. This also obviates the need for the normal clasp type terminals for these batteries, which are needlessly large. I folded up a simple cradle from 22G sheet steel and fitted a bit of paxolin with two terminals turned up from brass rod, behind which is a 3mm pad of closed cell foam, which acts as an insulator and also provides the slight pressure on the battery, ne
  2. An interesting project, not without it's challenges! If I were doing this I think I'd look carefully at the possibility of using the lens advance/focussing mechanism from a small defunct digital camera - something like an old Canon Ixus V2 is very tiny, and all the mechanics have been done for you, although working out how to control it might be interesting! Space might be another problem! There are still a few vestiges of the TC metre gauge line visible in Tulle station, or at least there were when I was last there, a couple of years ago, and further north, the metre gauge Chemin de
  3. Surprisingly, Amazon UK have some tiny DPDT latching switches, they are 7x7mm, and about 12mm total height including pins, but it's possible to cut the long push button down by about 3mm, as well as the pins, so you might have room. £1.93 for 55, post free. (They don't have any mounting arrangement, intended for pcb mount). They have lots of options if you search for "micro PB switch". https://www.amazon.co.uk/Push-Button-Switch-Self-locking-Switches/dp/B01G6P1G8W/ref=sr_1_3?ie=UTF8&qid=1506027268&sr=8-3&keywords=micro+push+button+latching+switch Mike
  4. Corbs, how right you are! (1) I know scale speeds have been endlessly discussed elsewhere, but taking a Gronk as an example, they mostly had a top speed of 15mph, which in 1/76 translates to travelling 24 inches in 7 seconds; at a shunter's brisk walking pace, say 5mph, it would take a 1/76 train 21 seconds to travel 24 inches, and at a coupling speed of 1mph, it needs 8 seconds to travel 2 inches. Compare this to the absurd speeds often seen at exhibitions ! BPRC makes these speeds possible, given a good quality motor and a sensible gear ratio, like nothing else I've found. (2) I do
  5. John, happy to hear that my plodding efforts have led you to what I'm sure will be more imaginative solutions, and I'm grateful for your links to cheaper sources of voltage steppers - I must not wave the credit card around with such abandon! I thought very carefully about using a separate vehicle for the batteries, and the only practical arguments against were the obvious one of space in a small layout, and my inability to find some really small polarised connectors that were robust enough to stand repeated use. The plus side is that the loco doesn't need too much butchering, and q
  6. The hobby seems to have changed from railway modelling to railway buying. Absolutely agree ! Sadly, this is part of a much wider commercialisation of peoples enthusiasms - it also happens in many other fields of interest - photography, sport, even cooking! However, like you, I also take heart in the idea that BPRC is for now anti- establishment, but no doubt the accountants have an eye on things, and I'm sure it will be commercialised at some point. I don't have your knowledge or skills with electronics, so I am happy to shell out for materially functioning devices that I can put toget
  7. Ok, I 've got it now! ;-(
  8. Click "Reply quoting this post" at the bottom of the message you want to reply to. You can edit out the parts of the quote you want to exclude. Or click on the switch in the top left corner of the editor toolbar, and you can edit the code, which is what I did to split it into two quotes. Brilliant! Many thanks. This is the link to the eBay seller of OKCells: http://www.ebay.co.uk/itm/2Pcs-OKcell-9V-800mAh-USB-Rechargeable-Lipo-Battery-For-RC-Helicopter-Microphone/311905487080?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 The Pololus I use are adjustable output via a
  9. I thought of using a 9v battery, but whatever voltage I use needs to be stepped up or down somewhere. You are much more ambitious than me! I only have a single 00 gauge shunting layout, lamentably incomplete, which started out as DCC, but one of the neighbours kids managed to terminate the controller, and since I was fairly underwhelmed by the whole DCC thing, and the cost of a new controller was prohibitive, it remained untouched for many months, until I stumbled across the DT site. I bought a receiver and transmitter from Micron last year, and haven't looked back since! You might like to h
  10. Look what you've started! After seeing your first post, it suddenly dawned on me that the quickest way to get a few RC locos running, would be to stick the batteries and electronics in a van, and just attach two wires and a connector to each loco, so I can couple the van to whichever loco I want to run. Then I can do the loco conversions gradually. Bravo, John! This is a quick way to get things moving, especially with tank engines where there really isn't enough room for a decent battery pack, drive unit and an Rx. I built this as a test bed for ideas, and it's by no means finished. My kno
  11. Some interesting comments here, - I like otherplanet's pole loco, I hope it is intended to run on "standard gauge" logs ! I think that standards for R/C trains are only important if you hope to be able to buy one RTR out of the box, as I am certain will happen in the future, but I am also certain that the arrival of R/C for miniature railways will come to be seen as the defining moment, when the many annoying compromises needed by track power, either DC or DCC, were finally conquered. Meanwhile, I am happy to play around with ideas, and here are some more pictures of "Romulus and Remus", the
  12. John, A useful little speed calculator is here: http://www.modelbuildings.org/free-scale-speed-calculator.html This has always been an issue for me - real life train speeds, except on main lines, even now, are often far less than we imagine, and in earlier eras even slower. An un-fitted goods train rarely exceeded 25mph, and even though marked XP, vacuum fitted 10ft vans often became unstable at more than 50mph, and in the 1960's BR introduced a blanket 40mph restriction on them to curtail accidents. In a yard or loco shed environment, often little more than a brisk walking pace, s
  13. As a fairly new follower of this forum, I hesitate to contribute to what are clearly extremely well informed threads, but it seems to me that the true impact of 2.4gHz radio control for model railways has in some ways been overshadowed by the means of it's implementation. For example, much has been discussed about various types of batteries, integration of sound cards, compatability with DCC, and so on, but not so much about the way in which the absence of the need for power from the track might affect things in the future, and it seems to me that this feature is the most notable departure fr
  14. Before I consider contributing to any forums, a quick test of uploading a photo. The pics are of two Dapol ex-LMS 12 ton vans with a difference - they are a radio controlled motor unit in one van, and it's 9V power supply in the other. Built as a bit of fun to provide some loose shunting. As Built, prior to weathering After many years of neglect!
  15. Simon, what a pity that this interesting thread has been reduced to thinly veiled invective. I am new to R/C controlled model railways, though not model railways in general, and looked to RMweb as a source of information and ideas about the latest developments, and hitherto have found it useful. However, it is becoming clear that in certain quarters there is a rearguard action being fought by people who have invested heavily in DCC, particularly onboard DCC sound, and while this is perfectly understandable, I'm not sure if it is really relevant to the way R/C train control is going to deve
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