piston valve problems

piston valve problems

This topic has 1 reply, 1 voice, and was last updated 8 January 2013 at 20:37 by David Bothwell 1.

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8 January 2013 at 20:37 #108239
David Bothwell 1
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@davidbothwell1
Although I would not class myself a complete begiinner, I am struggling to sort out the valve gear on a piston valved three and a quarter inch "Royal Scot" locomotive. I have just re-built the chassis and "set" the gear to what I thought was correct, however there does not seem to be any movement ( or resistence) from the motion with a lot of compressed air pumped through!? I have set slide valve locomotives with a modicum of success,any help or suggestions would be most gratefully received. Another "odditty" of this design is the open to air (according to the drawings) of the exhaust?

Edited By David Bothwell 1 on 08/01/2013 20:39:28
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8 January 2013 at 20:37 #6510
David Bothwell 1
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@davidbothwell1
no pressure on locomotive
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