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wheel runout in steam locomotives
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I posted this in the morning and after having a day to think am now replying in the evening, and I realize that if I had thought a little further I could probably have answered some of these questions myself. <br /> <br />I understand that a tire's position on a wheel could compensate for lateral or axial variation in a wheel, I was more concerned about how dimentional changes within the diameter of the wheel could affect a driving pin's location, but I guess the pin's bore in the wheel could always be bushed or rebushed and then machined to correctly position the driving pin. <br /> <br />I also understand how center to center distance between drivers can be maintained and an axel's squareness to the frame. <br /> <br />What prompted my questions was that even after machining a new bushing for the connecting rod, the problem was not completely solved, which made me wonder that if the problem was not in the bushing or the pin itself, could it be in the wheel? <br /> <br />I guess though that unless I was actually there to inspect the pieces and rule out other possibilities ( too tight a fit? a distorted pin? axel play or out of square? out of quarter?) this is all speculation, and something like out of quarter could be dificult to determine out on the road. <br /> <br />I guess the question struck me as something I haven't thought of before. <br /> <br />
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