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February 2006British 0-6-0Tby Marc Horovitz |
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The prototype
This is a model of a British, standard-gauge 0-6-0T, perhaps patterned after a Lancashire & Yorkshire Railway class 23 (thanks to Dan Crow for this info). The model The mechanical parts of the engine are fairly well made. It has a single cylinder between the frames, controlled by a D-valve. Reversing is via a slip eccentric on the middle, crank axle. An interesting feature is the lack of a cylinder lubricator of any sort. The steam line passes directly from the regulator to the valve chest. The boiler is a Smithies with water tubes, fired by a four-wick burner fed by a fuel tank under the footplate. The burner/fuel tank can be quickly removed by extracting a pin that passes through the frames and the tank, thus securing it. A filler port for fuel is on the footplate in the cab. Boiler fittings include a safety valve, a filler plug, a regulator valve, and a blower. There is no pressure gauge or water glass. To raise steam, a fan is required. You can judge whether steam is up by tweaking the safety valve. The sheet-metal work -- tank and cab -- are somewhat less well done than the mechanical bits. They are made of thin sheet metal and are rather crudely formed. A lift-off dome, which conceals the filler plug, adorns the saddle tank. The entire engine was hand painted gloss black with a broad brush. The numeral "5" and "L.Y" appear on the cab sides, surrounded by red lining. There is little detail aside from the non-functional smokebox door and unsprung buffers. Did the builder design this engine, or was it built to published drawings? Just more questions that I hope might be answered. The run I let the engine run until the fuel was exhausted. Performance was about the same in either direction. When cool, I took it down to the bench and had a look at it. Yup, the eccentric appeared to be off a few degrees. I loosened the set screw and repositioned the eccentric so that it was 90 degrees out from the drivers. A trial run on air suggested that things were better. The second run also took place on a clear, cool day, but in a howling gale. I prepared the engine and lit it up in the shop. Once steam was up (again, very quickly), I took the loco out to the track. When the safety started sputtering again, I closed the blower and opened the throttle. Water again jetted out the stack, but quickly cleared. When pushed, the engine moved smoothly ahead, with a loud, sharp exhaust beat. Running light, it was very lively. I coupled the engine to a train of vintage wooden wagons. These had couplers of prototypical length, which meant that the sprung buffers on each wagon were actually engaged with those of its neighbor. I didn't know how these would behave on my railway, but they behaved very well indeed. They calmed the engine down considerably and turned it into a strong, sedate runner with an even louder exhaust beat. Given the four wicks and the relatively small fuel tank, the run was fairly short, but successful. Given the weather, I was happy not to refuel, but get back to the warmth of the shop. |
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This plain-Jane locomotive has a certain primitive charm. With a single, inside cylinder controlled by a slip eccentric, it is not a self starter. More or less identical on either side, the engine features fairly rough sheet-metal work over well-made mechanical parts. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The backhead features only a throttle (left) and a blower valve. That lubricator-looking-thing on the right is actually the fuel-tank filler cap. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The dummy steam dome lifts off to reveal the boiler's filler plug. Near the cab is the safety valve, tucked well down into the dummy tank.
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Right: The fuel tank under the footplate is retained by a pin, which passes through both the tank and the frames. Pull the pin, and the tank and burner drop right out. Buffers are unsprung. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Left: The piston rod (lower) and valve rod (upper) are clearly visible here, as is the four-wick burner in the firebox. The steam line is lies against the bottom frame, then curves up to the valve chest. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Left: Steam is up. Even with a high wind on a cold day, the engine was a lively performer.
Below: With a train of vintage wooden stock of unknown manufacture (Bassett-Lowke?), the 0-6-0 proved strong and reliable, with a delightfully loud exhaust beat. |
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