Hello again,
I thought I'd should post a photo of one of my scratch built engines. I wouldn't want everyone to think I'm a smoke blower.
I came accross this idea at the Portland In. gas engine show. There was an engine on display that used a crossover cam design to actuate the exhaust valve. I studied the design for quit a while, trying to figure out how to make the crossover cam. I ended up making it in three pieces to simplify manufacture. The engine has a bore and stroke of 1.000 inch. It is has a
hit-miss governor on the end of the crankshaft.The flywheel has a diameter of 4.25 inches. It runs quite well at 450-600 rpms. I utilized one of Roy Scholl's electronic ignition setups to fire the sparkplug. I built this engine last year in three weeks time after thinking about it for three months previous. I was in a hurry to finish it for the Names show. Luckily it ran with no major glitches. I have produced almost all the drawings for this engine although I am not a draftman(mediocre) but I hope they will be good enough for others to be able to follow. If there is interest,I'll try to find time to finish them. Let me know.
Dave.
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I thought I'd should post a photo of one of my scratch built engines. I wouldn't want everyone to think I'm a smoke blower.
I came accross this idea at the Portland In. gas engine show. There was an engine on display that used a crossover cam design to actuate the exhaust valve. I studied the design for quit a while, trying to figure out how to make the crossover cam. I ended up making it in three pieces to simplify manufacture. The engine has a bore and stroke of 1.000 inch. It is has a
hit-miss governor on the end of the crankshaft.The flywheel has a diameter of 4.25 inches. It runs quite well at 450-600 rpms. I utilized one of Roy Scholl's electronic ignition setups to fire the sparkplug. I built this engine last year in three weeks time after thinking about it for three months previous. I was in a hurry to finish it for the Names show. Luckily it ran with no major glitches. I have produced almost all the drawings for this engine although I am not a draftman(mediocre) but I hope they will be good enough for others to be able to follow. If there is interest,I'll try to find time to finish them. Let me know.
Dave.