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I can't help you Jon but I know some people who might be able to.  One is the Yahoo Bar stock engines discussion group, which is one of my favorite discussion groups.  Another good place to ask your question is the Home Model Engine Machinist forum, which is about machining model engines of all kinds.

Let me know if you find plans or pictures. I'd like to see them.

Rob

jon skorepa said:

jon skorepa said:

help soent most of today trying to get imformation on these engines basically need to worc out cross head and triangle size and angle. tks for any help.  jon[Image Can Not Be Found]

think of a compound or double simple steam cylinders with cross heads piston rods (knuckle) attached to a triangle rod leading to an overhanging journal and fly wheel with shaft to transmit power to propeller . the idea is that when the engine stops it can never be on dead center and will self start upon applying steam to the engine.i saw one example of an old engine 25yrs ago in a magazine but no dimensions or geometry of the triangle connecting rod made a wood model to fool with but before trying metal would like plans so as not to make too many bone head mistskes 12

Hi Jon.  I don't understand.  What are you trying to do?