jerrytug
Member
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- 1,837
- Location
- Isle of Wight
I hope someone can picture this in their minds? This is to settle an argument and reassure me I am imagining it correctly; it sounds intuitively wrong but I think I'm right. Yes I should get out more..
We are talking about a single cylinder, double-acting steam engine, fitted with a conventional piston rod, crosshead, connecting rod and crankshaft.
The crosshead is fitted with replaceable wear shoes, which run in ways, and guide the piston rod in its movement in line with the cylinder, and also accept the lateral thrust component from the crankshaft. (Visible on the green engine).
I claim that only one of the crosshead shoes will take all the wear from the lateral thrust, on both the upstroke and downstroke. (Both being power strokes.)
But someone has argued that a double acting engine will wear each crosshead shoe equally. Please tell me he's wrong
I will try and find a pic anyway
We are talking about a single cylinder, double-acting steam engine, fitted with a conventional piston rod, crosshead, connecting rod and crankshaft.
The crosshead is fitted with replaceable wear shoes, which run in ways, and guide the piston rod in its movement in line with the cylinder, and also accept the lateral thrust component from the crankshaft. (Visible on the green engine).
I claim that only one of the crosshead shoes will take all the wear from the lateral thrust, on both the upstroke and downstroke. (Both being power strokes.)
But someone has argued that a double acting engine will wear each crosshead shoe equally. Please tell me he's wrong
I will try and find a pic anyway