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Chris yes I know that now but that is the first INSIDE admission piston valve I have ever seen. I have never seen one mentioned in any valve gear book the assumption Don Ashton makes is ALL piston valves are outside admission as he did not label them.If I had started with the LP valve with outside admission the graphics would be much simpler as it works exactly like a D slide valve.Cheers Dan
... (snip) ...Man I hope that cleared this up. It is all the possibilities of the eccentric orientation for open rods. It is left to the reader to work out what crossing the rods will do to the valve linkage.Cheers Dan
Don't know if it was mentioned, but Sabino is inside admission on the HP and outside on the LP