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Graham R

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  1. I was reminded of this question (and the various helpful answers from Nick, Andy and others with sound clips) when an elderly neighbour lent me his copy of "British Railways for Boys" by Cecil J Allen, written in 1949. In "Making and Using the Steam", it says: 'It is easy to distinguish a three-cylinder locomotive when it is at work, because there are six exhaust beats or "puffs" for every revolution of the driving wheels, instead of the more usual four. But with four-cylinder engines, it is customary to arrange the four cranks at right-angles, so that the puffs are thrown out in pairs, and there is no distinction between the puffing of a four-cylinder engine so arranged and a two-cylinder locomotive. One special three-cylinder arrangement is that of the well-known "Midland compounds" of the London Midland Region; they are so-called because the steam is carried through two stages of expansion, first in a single "high-pressure" inside cylinder taking steam direct from the boiler, and then in two outside "low-pressure" cylinders before it is thrown out of the chimney as exhaust. These compounds puff in just the same way as an ordinary two-cylinder locomotive.' So the same conclusion as reached by m'learned friends earlier in the thread, but nice to have it on the authority of Mr. Allen as well. regards Graham
  2. There was already a mention of Granton in Edinburgh, but I don't think Leith Docks has featured yet? There is a long double line of rails in the the granite setts still visible behind the former bonded warehouses along Commercial Street, at the former West and East Old Docks. This Streetview location is a good starting point to explore, where the connection to the docks from the North British station at North Leith (renamed Leith Citadel in BR days) crossed Commercial Street. Here are some detail shots I took last year. I have further details of crossings and point blades if anyone is interested, just PM me. There are further short lengths on the other side of the Water of Leith, on Shore and on Tower Street where there was a connection to South Leith station. regards Graham
  3. One of the railwayana auctioneers has ten WHR key tokens coming up and has thoughtfully taken some nice clear pictures ....click here and scroll down ...
  4. Mighty cunning ... now you can charge the whole cost to the household account ...
  5. Regarding chairs - 4-bolt plain chairs are illustrated on the NBRSG forum here: https://www.nbrstudygroup.co.uk/forum/viewtopic.php?f=5&t=334 Joint chairs on Templot Club here: https://85a.co.uk/forum/view_topic.php?id=3003&forum_id=11 If you look around Templot Forum you should also find details of interlaced sleeper turnouts, for example in this topis: http://85a.co.uk/forum/view_topic.php?id=401&forum_id=1&page=1 Regarding loco drawings, the NBRSG has published many nice drawings by Euan Cameron in their journal, back number of which are available from their website (https://www.nbrstudygroup.co.uk/sales/sales.php) on a CD. If you have not already got it, the late Bill Sewell's book "NBR Locomotives - a design survey" has been reprinted by the NBRSG for £15 plus £4 P&P to non-members. Apart from being a detailed and fascinating guide to locomotive design in general and NBR design in particular, it has many drawings. Those of interest to your era include: Early designs: ex-E&G 2-4-0 No 106 in 1889 condition 0-4-0ST No 404 in 1883 condition ex-GBH&C 0-6-0T No 502 in 1877 condition Wheatley designs: 0-4-0 Goods in 1868 and 1911 condition (later LNE Y10) 0-6-0 Goods in 1871 condition 2-4-0 express passenger in 1890 condition 2-4-0 passenger in 1873 and 1891 condition (later LNE E7) 4-4-0 express passenger No 224 in 1871 and 1897 condition 4-4-0 passenger 420 class in 1873 and 1887 condition 0-6-0 saddle tanks in 1870s and 1890s condition (LNE J81/J84/J85/J86) Drummond designs: 2-2-2 of 1876 4-4-0 Abbotsford class of 1877 (LNE D27/D28) 0-6-0 18" goods of 1898 (J32) and 17" goods of 1892 (J34) 0-6-0T of 1875 (J82) 0-4-2T passenger of 1877 (covnerted to a 0-4-4T, became LNE G8) 4-4-0T passenger (the one with the solid bogie wheels, LNE D51) Holmes designs: 0-6-0 goods 17" of 1883 (J33) and 18" of 1888 (J36) 4-4-0 passenger 592 class, 7' coupled wheels of 1886 (D25) 4-4-0 passenger 633 class, 6'6" coupled wheels of 1890 4-4-0 passenger 729 class, 6'6" coupled wheels of 1893 (D31) 4-4-0 West Highland bogies of 1894 (D35) 4-4-0 Abbotsford rebuilds of 1901 0-4-0ST of 1882-99 (LNE Y9) 0-4-4T passenger of 1886 (LNE G7) 0-6-0T heavy shunting of 1900 (J83) Hope that helps. The NBRSG produces a very professional journal and has an online forum which, though not very active, will usually yield an answer to a specific query sooner or later. Good luck with your model. regards Graham
  6. I believe the standard HR wood building cladding was 6½” planks with 1” half-round cap-strip.
  7. and in August 2016: Window style detail: I have photos of the other three sides as well (in 2016 though!) if they're of interest, just drop me a PM. Regards Graham
  8. Here are a few images ... The two traction engines with Uganda Railway trailers at Limuru, between Nairobi and the Rift valley escarpment, during construction of the line in the 1890s: The armoured one (I assume) as UR No 3 at Mau, on the Nakuru-Kisumu section: and the lightweight one after hitting a soft spot somewhere near Elburgon: Finally here is the remains of a Marshall engine (presumably originally owned by the railway) at Kisumu in2005. It fell victim to a scrap drive a couple of months later. Hope that's of interest regards Graham
  9. Hi Ross, How interesting that the coach survives. Yes, of course you are very welcome to use the photo and thanks for bothering to ask. I’ll see if I can make a sharper scan (but the original was probably blurred). Good luck with your restoration, I hope to see the final result one day. Graham
  10. If you really can’t fold the ledges, at least you now have consistent rebates to take pieces of microstrip, tedious though adding them might be.
  11. Hi Alan, After a bit of googling, it appears that FPGA means field-programmable gate array, MCU means microcontroller unit, and jtag is used in this context as shorthand for a way to update the onboard memory of a programmable chip through its data interface. So the jargon translates as "The firmware we shipped you has a bug which means the 2k screen flickers when you use it. The screen is controlled by a chip which can be reprogrammed (the FPGA). It can't communicate directly with the USB key, but the main controller chip (the MCU) can, and we can reprogram the MCU so it can in turn reprogram (flash) the FPGA using the JTAG protocol." That explains why three separate firmware upgrades need to be applied one after the other I guess ... It seemed to do the trick. I'm glad you asked because otherwise I would not have properly understood what I'd done regards Graham
  12. How did you know? I wondered why the printer came with a huge metal scraper ... I found out when trying to get the base of the test piece off the build plate! But then it suddenly came off very cleanly. It is a nice feeling to have got it to work (the results even impressed my kids, briefly).
  13. Thanks Paul. I upgraded the firmware with the three files Photon sent, to v0.1.7, and took the printer to bits following their instructions to check the UV cable connector was correctly seated (which it was). I started the test print and this time it has worked; it has another 40 minutes to go or so but is looking pretty good. So it must have been the firmware. According to the Chinese-language release notes, with the help of Google Translate, the problem with the old version was "The FPGA firmware drives the 2k screen, and there is a flickering screen during the user's use. But the firmware cannot be upgraded through the U disk [i.e.the USB key], only the machine can be returned or the motherboard can be replaced", and the new version solves two issues: "1. Improve the overall stability and solve the phenomenon of abnormal lines in printing. 2. Added the function of MCU to upgrade the firmware of FPGA through jtag, which is convenient for users to update the firmware in FPGA chip on the motherboard through U disk, and solve the abnormal problem in 2K screen exposure. " And indeed it seems to do what it claims to. Thanks very much again to everyone who responded for all the hand-holding advice ... it definitely made the process less intimidating. Onwards and upwards ... regards Graham
  14. Thanks Monkeys and njee20. Photon tech support responded promptly, and has sent me a firmware upgrade and instructions on how to check the UV cable. I'll report back once I do that ... but first, work ... Graham
  15. That's what I did ... the screen lights up .. the mask for the start of the print (a circle) is displayed on the LCD. Using the Tools > Exposure menu, the three patterns (fully blocked, partly blocked, fully exposed) are shown as expected. Is the exposure test meant for testing the screen or testing an exposure with resin in the tank?
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