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Concerning cylinders...
Let's say you have a bronze cylinder with a 1" bore and a 1" stroke with a boiler pressure of 100psi. The cylinder is 1.50" outside diameter.
1 - how thick do the walls have to be? Punching it out to 1-1/8" bore would leave 3/16" walls. Punching it out to 1-1/4" bore would leave 1/8" walls? Does reduced wall thickness, and thereby mating surface area with the cylinder end cap, impact gasket sealing?
2 - how does cylinder length affect power and performance? If the stroke remains the same, does lengthening the cylinder (thereby increasing the volume of the steam chamber each side of the piston) impact power and performance? Does the added volume increase the cylinder fill time enough to rob power assuming valve timing remains the same?
Let's say you have a bronze cylinder with a 1" bore and a 1" stroke with a boiler pressure of 100psi. The cylinder is 1.50" outside diameter.
1 - how thick do the walls have to be? Punching it out to 1-1/8" bore would leave 3/16" walls. Punching it out to 1-1/4" bore would leave 1/8" walls? Does reduced wall thickness, and thereby mating surface area with the cylinder end cap, impact gasket sealing?
2 - how does cylinder length affect power and performance? If the stroke remains the same, does lengthening the cylinder (thereby increasing the volume of the steam chamber each side of the piston) impact power and performance? Does the added volume increase the cylinder fill time enough to rob power assuming valve timing remains the same?