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Ruston

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Ruston last won the day on June 3 2013

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  1. Hi Ian. It may be more complicated than that. As there is no water tank to fill full of lead, the engine will be rather light, so plan A is to have the leading wheels of the tender being very lightly sprung and taking no weight, so some of the tender's weight will be transferred though the drawbar to the engine. Plan B is to power the tender. The engine wheels are 4ft. and the tender wheels are 3ft. If I use the same type of motor in each and gear the engine to 80:1 and the tender to 60:1 then the motors ought to spin at the same r.p.m. for a given voltage and the wheels turn to give the same road speed in both the engine and tender. I know there will probably some variation in the performance of each motor and slight frictional differences in the gearboxes but it'll be as near as makes no difference and should add a great deal of tractive effort. The problem may be fitting a motor and gearbox in the tender as it's rather small.
  2. The frame plates, cross-members, running plate and boiler mounts and footplate have been made and fitted together. It is designed to break down into four sub-assemblies, these being frames, running plate, footplate and boiler. The cylinders will be fixed using studs and nuts and after the fitting up of the slidebars, piston rods etc. will remain fixed as part of the frame assembly.
  3. I've looked back a couple of pages but can't find where you said it but didn't you say that your steepest gradient is about 1 in 30? And your longest train 8 wagons? If that's the case then I'd really like to know what engines you have that can't handle that without magnets. My own layout has a 1 in 18 bank and one of my lightest engines, an L&Y Class 21 (a.k.a. a pug), weighing only 110g, can take 5 wagons up that, so I imagine that 8 wagons on a 1 in 30 would be no problem.
  4. Thanks, Robert. I've just looked on the motorbogies site and I don't understand what's going on there because they show a OO 16mm dia. wheel as being a scale 5ft. 4in. http://motorbogies.com/index.php?main_page=product_info&cPath=20&products_id=115 All the other wheel dimensions are also given with a similar oversize. They also want £7.50 to post 4 wheels! I'm not paying that just for postage.
  5. Evening all, I normally use Alan Gibson wheels but for one project that I have planned it will be easier to use wheels that are self-quarting, so I am considering Scale-link wheels but have never used them before and so I have a few questions that I hope you won't mind answering. How deep are the flanges? What is the thickness of the wheels? What back-to-back measurement does using the Scale-link axles give? Thanks
  6. In all but one photo (the last one I posted on this page) the rods are down, with the crank pins in the six-o-clock position, so it's difficult to see whether or not there was a part of the frame behind the rods. I'm leaving it in because if it's not there the frame plate, at the point where it's slotted for the motion bracket, is less than a millimetre deep and it will surely bend or break without it.
  7. No wonder the cutter broke if it was only 1mm on hard brass. I use 1.5mm for general cutting, that is to say the cutting out of parts. Anything smaller is only used for making holes and slots. I get my engraving brass from a friend and I have no idea where he gets it from. You can find it online but it's expensive.
  8. I don't think anyone can give an answer to that, so just do whatever colour you want. I did. I don't know why I haven't seen this thread before. I would like to have a go at scratchbuilding one of the box tanks but I can see it being a problem in OO as there is no running plate and it will be obvious that the gauge is too narrow. The back-to-back on the wheels may be narrower than the smokebox/steam chest etc.
  9. I use the hard brass for bodywork but for frames I use engraving brass of 40 thou. (1mm) thickness. It remains straight and rigid and doesn't require bearings to be fitted. I also use it for things such as the boiler bases on the previous build. It's useful for things such as that because it's thick enough to tap, which saves faffing around soldering nuts on. You need to set the machine for the fastest speed for hard brass and squirt oil on to the sheet to help cool the cutter and, of course, take it slow. What size of cutter were you using?
  10. I suppose I'd have to video it for you to see it in ation, which would be rather difficult to do when operating it but I've taken some photos that may be of interest. The patterns are clamped to the top table on the machine and the arm, with stylus, is moved around the edge of the pattern. At the bottom of the stylus is a roller. Different sizes are used, depending on the reduction of the pattern. Shown here are 6,8 and 12:1 rollers. Above the rollers is one of the cutters, which have a D-shape cutting head. The business end spins at between 2000 and 18,000 rpm. The speeds are changed by moving the drive bands on to different pulley wheels on the machine. The lowest speed is used for cutting styrene, where the fastest is used for hard cartridge brass. One frame plate and the footplate made so far. This is after cleaning up the burrs. The lower firebox part in the previous photo was just an experiment to see if I could mill rivet detail but, of course, I would need to make two handed frame patterns for that to actually work properly and so it has been cut out in the finished piece.
  11. 3D-printing. Killian Keane has already drawn them up for me.
  12. Manning Wardle 'Lord Ward' type 0-4-0. Scale: 4mm/OO I have started another scratch build for 4mm/OO. This time it is a type that was built for the Earl of Dudley's railway, which served his various mining and iron-making interests. The first of the type was built by E.B. Wilson of Leeds, in 1856 and was named either LORD WARD, OR ALMA, depending on which source of information you choose to believe. More were built by Wilson's successor, Manning Wardle Ltd., who supplied parts for more of the type that were built in the Earl of Dudley's own Castle Mill works. The last one was built in 1872. The only other user of the type was the contractor Thomas Savin, to whom Manning Wardle supplied one for building part of the Cambrian Railways. It was absorbed into Cambrian stock. From at least 5 of which I have managed to find photos of, none were exactly the same and so as mine is intended for my fictional mineral railway, I may pick and choose certain detail features as the build progresses. I have begun to make some of the patterns, to be used for cutting the brass parts. To save space I have stuck some on top of others, which also ensures that holes will be exactly in the right places on the parts that will be screwed together.
  13. I have made some of the patterns for the Lord Ward type 0-4-0.
  14. Hi Rob. It's a Highland Railway loco mid-green (1875), from Phoenix Precision Paints. I also painted the roof on mine as I'm sure it shouldn't be black.
  15. Do Branchlines have a website? I've googled for one but all I get is a listing on UK Model Shops site and a blog post from 2008.
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