MEM Corliss build

[JasonP]

After a madcap summer where I moved houses, I'm finally able to return to my MEM Corliss build. This is the first weekend I've had where I could actually do something to it, so I've been doing some fettling. I'm almost ready to give it a run on air and I'd like to solicit some set up tips on initial timing.

Unlike some of these I've seen, I have the lower valves designated as the inlet and the upper valves are the exhaust. I'm trying to understand what positions the valves should be in relation to the piston, crank shaft, eccentric sheeve, valve arm etc. Once I have the starting positions set, I'll tweak from there. Anyone have a playbook on setting this up?

Cheers,

Jason   

[Jasonb]

As nobody else has answered I'll have a go although Corless engines don't really do it for me.

Having the inlets and exhausts reversed won't make much difference except the engine will run the opposite way for a given same eccentric position.

[john mills]

when running on steam   and  on air if there is any condensation .
exhaust is at the bottom so water tends to be pushed out each stroke  if the exhaust is at the top it can fill with water first not good drain cocks at the lower position need to be used to make sure no water can accumulate .
J0hn