Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Yours probably has more time on it than most will ever get in a lifetime. I looked at a video where someone starts a v twin with the type starter we are talking about. I still don’t get what makes the stub shaft drive the bearing then release, but it does.

Meanwhile, since I ended up absolutely hating my display mount, and I’m waiting on stuff to redo that, such as GT2 timing belt material and some M3 screws, I figured I’d go ahead and do the connecting rod bearing oil hole.  Done and back together. I didn’t disturb the crankshaft follower where it goes into the gear case, so there doesn’t seem to be any potential timing issues I don’t think.  As a precaution, I rotated the crank to the firing position, points just closing, top dead center, and scribed a mark on my nylon water pump pulley that is screwed onto the crankshaft follower, just a line pointing to a screw head nearby, so I could verify the coordination between crank and cam (points closing), essentially timing marks like a car engine has on the balancer and gear case.  At any rate, I opened up the oil hole so the splash oil dipper can “pump” oil into the bearing. That missing oil hole is I think a consequence of engineers who are not car guys. They’re urban kids in an incredibly crowded area where most people don’t have cars.  I wouldn’t be surprised if they’ve never torn apart an engine out in the world. They’re doing these projects as they would their stirling engines or other stuff, strictly from a theoretical and textbook background.  They might not even have a clue how the rod bearing on a splash oiled  engine is supposed to be. This isn’t a hit and miss or their two stroke scooter with ball bearings……………
Your reports are encouraging though. I think these little engines have loads of potential.