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Skinnylinny

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  1. Well, the driver can now see where they're going, which is a start! As well as roof ventilators to all vehicles, windows, beading and lamp irons have been added to the driving end. Of the 5 other carriage ends, 4 have been completed, leaving just the one that will be up against the locomotive. Below you can see the alarm "butterflies" and the control gear for the electric lighting. The only steps and end handrails are on the non-driving end of the set. Still to go: Underframe detail (brakes, battery boxes and dynamos), buffers, rainstrips and roof electric lighting conduits (these vehicles being electrically-lit from the time they were converted to pull-push sets). Edit: I managed to get the lighting just right to highlight the panelling for this render, so have a view down the set from the other end!
  2. They would have been built with the LSWR 3-wire system (three cables running over the roof), but converted to compressed-air during the Grouping, which was the standard system decided on by the Southern.
  3. Motor Trains, Push-Pull, Auto Trains, Pull-Push... Vacuum, rodding, cable or compressed air... So many variations on the same basic principle!
  4. Definitely an interesting set - two different types of beading between three carriages. I'll admit that I drew up the 5-compartment Third, then used some virtual cut-and-shut to create the 4-compartment composite! The best thing since sliced... carriages? The driving third, though, has not only recessed panelling below the waist, but half-round beading above it demarcating the upper panels. This means that I can't get away with quite as much copying and pasting.
  5. Eep. Well, there's one phrase I'll need to drop out of my vocabulary! *ahem* What it is is two of the three carriages of an SE&CR ex-LCDR 3-carriage pull-push set, as used with the Wainwright P class.
  6. ...can you tell what it is yet? A clue: There's one more still to add... (And no guesses [email protected], whom I've already told!)
  7. Another piece of LSWR rolling stock has rolled off the CAD workbench - this time an LSWR 16' horsebox, to go with the open carriage truck. The model has no floor, but is designed such that glazing can be added from underneath, before a plasticard partial floor can be glued to the tops of the solebars, and a compartment partition to two locating strips printed on the inside. This means that so far, my LSWR stock 3D printing CAD includes: A12 locomotive, part-finished F9 bodyshell, an open wagon, a carriage truck, a horsebox, a luggage van, a gunpowder van, a cattle wagon and a brake van. I've also been continuing work on the laser-cut LSWR 42' bogie stock at the club, which has now re-opened. These two carriages are now glazed and lettered, although one still requires lining out, and there are a couple of tiny spots of paint to be touched up. There's a full third, and a brake third.
  8. First of all, that's looking fantastic! I'm currently working on one in 4mm scale, so I'm familiar enough with the type. Horseboxes were classed as Coaching Stock rather than goods stock, so would have been painted in the carriage brown rather than the goods stock brown in LSWR days, with (I believe) white lettering (might be gold, I can't find my references at the moment). A photo of a very nice model of one can be found on the Scalefour Society website as part of their Socially Distanced Challenge: http://scalefournorth.org/wp-content/uploads/2021/03/Andy-Westcott-1.jpg
  9. Well, the tender body has printed flawlessly (although for some reason the separate wheel retainers have refused to print at all twice now!). This evening was my first time back at the recently re-opened club. With a bit of work on fitting pickups and some wiring, I did manage to get some movement out of the loco, demonstrating that it's not an entirely ridiculous project. The cutouts in the chassis for the pickups need some tweaking, as the ones on the driving wheels without fail all rubbed on the insulating sleeve on the Romford driving wheels No video, I'm afraid, but the A12 did look rather nice with three of the Hornby 6-wheelers...
  10. There are quite a lot of interestingly-shaped gearboxes available. This thing certainly seems pretty torque-y though! As for noise, it's basically silent up to about 80% on the controller, then a slight gear whine, but pretty quiet overall. Not sure I quite understand what you mean by L shaped, are you thinking more like a traditional model railway motor/gearbox combination? Here are some of the variations I've come across: I'm especially intrigued by the jackshaft-type drive on the bottom right! Bottom left is a 3D printer extruder, while the middle bottom seems to be part of a linear actuator of some sort.
  11. These N20 gearboxes use a worm and wheel for the change of angle, the brass gear in the image above is skew-cut to mesh with the worm on the motor shaft. I know that the straight N20 gearboxes are usually all spur gears.
  12. I bought mine on eBay for about £3 a pop, although the seller has now raised their prices. They can be found fairly easily by searching eBay for "N20 dual" Oh, and a mist of primer has happened, which means I've noticed that the valve chest has printed... unusually? I'll need to tweak that too. Very close to being there though!
  13. It's this variant: I've used gear ratio D, which as 12V gives a top speed of just over 80mph (unloaded) which seems reasonable enough for a Victorian express loco! The output shaft is a 3mm D shaft, with a circular central section, and it's a friction fit with a knurled centre section. A quick tap with a hammer popped it out, and a 3mm Romford axle fitted perfectly. I've removed the two brass spacers either side of the output gear, as I intend to secure the drive gear to its axle by sliding it to one side, applying a small amount of adhesive, then sliding the gear back into place. This then gives an easily repaired fix, which will be sacrificial if the wheels or coupling rods bind.
  14. The loco is printed! ...well, ish. The first test print failed, as the supports weren't right. I got half a cab, and that was it. The second test print failed completely (literally nothing appeared on the print bed), so I had to take the printer apart and clean it. The third print has given this: The loco body is 99% there - one cab footstep didn't print correctly, and I need to tweak the backs of the splashers which rub slightly on the driving wheel flanges. Just enough to stop the loco from free-wheeling nicely along the track. With the bodyshell removed, though, the chassis has turned out absolutely perfectly. The bearings on the gearbox just snapped neatly into the holes on the chassis, the motor rests neatly on its mount and fits into the firebox with oodles of space around it, meaning I can stuff the smokebox and boiler with weight. With the drive gear disengaged, the chassis actually rolls about as smoothly as an etched chassis I've got for the Ilfracombe Goods, which I'll be taking down to the club at some point to ask for some help with the pickups. This loco has been designed to use the DCC Concepts wiper pickups, which should be arriving in the post tomorrow. Doesn't it look neat? I'm really pleased!
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