The K-Zone: A G-scale garden railway: rolling stock

Note: Since I recently moved house, work on this railway, and these pages, has ceased. I am currently working on a new G-scale railway, taking into account what I learned from this one.

G-scale locos are available in a number of different drives: battery power, track power, live steam, even clockwork. All have one thing at least in common -- they are expensive. The great advantage of keeping away from track power is that you don't have to worry about keeping the track perfectly clean, and ensuring electrical conductivity, which are major annoyances. However, track power is convenient, and a wider range of locos is available than the other formats. In addition, it is generally cheaper because you don't need on-board radio control equipment like you do with battery or steam power. If you go for track power, you'll need a heavy-duty power supply - even a small loco draws about an amp under load, and needs about 18 volts for full power. A small OO-gauge loco, by contrast, will typically expect a maximum of 12 volts, and draw about 100 milliamps.
      Prices for G-scale locos, with electic drive, range from about one hundred to several thousand pounds. For live steam, prices start at about £300 if you are prepared to construct from a kit, or about £1000 if you want a ready-built one. Prices go up to, well, I haven't found an upper limit yet. There is a thriving second-hand market in live-steam locos, and it's worth having a look on eBay auctions for the occasional bargain.
      While I like the idea of running a real steam loco, at the moment we are using an LGB starter set (see photo). This set offers surprisingly good value for money (comparatively speaking). For £140 you get the loco, two coaches, a four-foot circle of track, a 1-amp power supply, and a few figures. Given that the power supply and the track would cost about £100 if ordered separately, and the cheapest LGB loco is about £70 alone, this set represents quite a saving. The loco doesn't look half bad -- it's reasonably detailed, including full valvegear, front and rear lights, and glowing firedoor. It even has a `chuff chuff' sound generator, which can get a bit annoying after a while.
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