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Here are a few pointers you may want to check. Are your flywheels heavy enough to keep the engine rolling? There can be no friction anywhere. The cylinder and piston fit must be perfect. The cylinder is honed and lapped. The piston fit should be like this: without any oil, the piston should...

Dennis, Very nice Flywheel. I too cut my own gears. It became part of my learning process of working in a machine shop while in college. More photos to follow soon. Doug

Jim, You are welcome. I have more photos to send, but I've run into a snag sending them. Doug

more photos

Crosshead photos

Here is some more information about Rudy's tractor that I built. Mine was completed about 30 years ago, and has run lots and lots. Some of the changes and suggestions were based off of information from a friend who had built one of these too. The gear ratio was changed to slow down the speed of...

I will try to take some photos this weekend of the different cross head design and post them. I'll also check to see if I have any sketches or dimensions stashed away. There were questions about the tractor operation and I'll put some comments together on that too. One thing a friend and I...

My Message got lost, but the photos got sent ?? Nice job Dennis, please keep us updated. I built one of the tractors as my first project about 30 years ago. It has many miles on it. I take it to an engine show and the kids "crawling engineers" come out of the woodwork to steer it. I used steel...