Walschaert Valve Gear (Part 1) Arrangement and Operation: Action of Gear, ICS #, originally published International Correspondence Schools, Scranton, Pennsylvania, 1925. Reprinted by Nation Builder Books, Mebane, NC, 2015. 5½ x 8½ photocopied booklet, 40 pages.

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Walschaert Valve Gear (Part 2) Details of Gear, ICS #, originally published International Correspondence Schools, Scranton, Pennsylvania, 1925. Reprinted by Nation Builder Books, Mebane, NC, 2015. 5½ x 8½ photocopied booklet, 60 pages.

Please note these are new photoduplicated reproductions, not originals. The accompanying pictures were scanned from reprints, not the originals.

If you are a live steamer, and you’ve always wanted to know the two general methods of connecting a radius rod to a reverse-shaft crank, then these are the books for you. (We also have the ICS booklets on the Stephenson valve gear and Baker valve gear). This book will explain why a different type of gear frame must be used for a two-wheel engine truck, than for a four-wheel truck. Or what change in position is brought about by the movement of the reverse lever. And why the Stephenson valve gear can be used only on the early steam locomotives. 

And if you’re lucky and skilled enough to actually operate a live steam locomotive or engine, at a threshermen’s reunion or antique tractor show for example, then maybe you’ve pondered what to do if a link hanger or radius rod breaks. And wouldn’t it be cool to be able to explain to all those bystanders what an eccentric does, and how an engine is put into reverse? 

As is usual with most correspondence course booklets by the International Correspondence Schools, this is richly illustrated with crisp line drawings. 

Contents, Part 1, Arrangement and Operation: Action of Gear

Contents, Part 2, Details of Gear