Page:Model Steam Locomotives by Greenly Henry.pdf/10

 Model Steam Locomotives CHAPTER I Choice of Scale and Gauge

Introduction. — The model locomotive is the most popular of all working miniatures. This is due to the interest displayed in the locomotive itself, and also to the fact that this type of prime mover is self contained ; it includes the machinery for converting the heat of the fuel into useful work, and carries with it the necessary generator, fuel and water. Model engineers approach the construction of a model locomotive from different points of view. Some do not look to the completion and running of the engine so much as to the pleasure that will be derived from the making and assembling of the parts and in the appearance of the finished machine. Others prefer to see a model locomotive at work. As in real practice, the labour of construction should be a means to an end. Endeavour should be made to obtain the maximum power on the given gauge, and there is no need to fallow any particular prototype, so long as the exterior design is one which would be reason¬ able in real practice. The beginner in model locomotive work should not be too ambitious. In preference to selecting at the outset an elaborate design, he should adopt one of a simple nature. I