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4 cyl. steam engine

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paul gough:
I have begun to think about a double acting 4 cylinder oscillating engine with the cranks set at 135 degrees. This provides a power impulse every 45 degrees and in theory provides an even torque application. I have tried to work out whether there might be some utility in regards to vibration by arranging the cylinder "timing" other than sequential  eg. 1-2-3-4 to something along the lines of an internal combustion engine to achieve better balancing. I am afraid I have tied my mind in knots over this and end up with a blanked out brain and headache. Anybody with a clear head or thoughts on this matter and who would be kind enough to advise will be thanked profusely. Regards, Paul Gough.

crueby:
One consideration is whether this is a compound engine, with the exhaust from the first feeding the steam chest of the second, or will all cylinders take input steam directly?

gipetto:
If a 4 stroke v8 engine is balanced, then a 2 stroke v4 is balanced(i think i read on the wikipedia page that it is). one would think that a v4 steam engine would be ideal. i would look at those.

paul gough:
I thought everybody in the Northern hemisphere would be in bed by now!? Anyway, sorry for not being more specific in the description so as to provide a clearer picture. The engine would be 4 cylinder, inline, simple and reversable. I am inclined to make the  flywheel and power take off central, ie between cyl. 2 & 3. Steam supply will be through a port-face and cylinder block as is common with models of this sort. Regards, Paul Gough.

crueby:
Its not even 8pm here - Northern hemisphere but around the side in my own pocket universe...   :Lol:

Um, the 135 degrees is not working out when I draw where the cranks would be... That would put them at 0, 135, 270, and 405 (45 past the first '0')
Either I misunderstood something in your description, or you are using circles with something other than 360 degrees?   :noidea:
Usually the cranks for a 4-cylinder would be in one of two layouts: every 90 for a 'simplex' engine, or possibly every 120 for a compound with split LP cylinders.

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