![]() ![]() How does it work? What do all the bits do? Where does each part fit and why? All questions that the gear begs in the mind of the viewer. ![]() The fascination with the gear is that it is the principal feature of the modern high-speed steam locomotive and one that attracts attention by all and sundry whether the machine is stationary or in motion. In the original edition, he pointed out that the outstanding and inherent feature of Walschaerts' gear is that, if properly designed, it is the perfect gear for accuracy of function in all the positions of the driver's reversing lever or screw and it can be argued that this is why it remains so popular and so much utilised. Otherwise, such enthusiasts (who deserve to be encouraged), would be confronted with the intricacies and problems connected with the gear for the first time. ![]() Published in 1973 in Great Britain by Model and Allied Publications in paperback (staple binding), this 63 page book is all about Walschaerts' valve gear for steam locomotives - here model steam locomotives however it is mainly because Walschaerts' valve gear became so firmly established as one of the principal reversing mechanisms employed in British locomotive practice that the late Henry Greenly set about the task of writing and illustrating this little book for the benefit model engineers. Illustrated throughout in scale drawings. ![]()
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