Aviation engines; design--construction--operation and repair; (1919)
Pagé, Victor Wilfred, 1885-1947 · New York, The Norman W. Henley publishing co. · leaf 426
taken off to remove the mostof the roughness. Valves are made in two standardtapers, the angle being either 45 or 60 degrees. It is im-perative that the cutter blade be set correctly in orderthat the bevel is not changed. A set of valve truing andvalve-seat reaming cutters is shown at Fig. 183, B.… … Fig. 183.—Tools for Restoring Valve Head and Seats. of tool steel and have a bevel at each end, one at 45 de-grees, the other at 60 degrees. The valve seat reamershown at G will take any one of the heads shown at F. 428 Aviation Engines It will also take any one of the guide bars shown at H.The…
Airplanes
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