I guess engine number three is going to be the Rupnow Vertical.
Looking through my inventory, I didn't have all the materials needed to build this engine. So, I placed my order with Hobby Metal Kits, in Wisconsin. In the mean time I got started with materials I did have.
First was downloading & printing the plans. Thanks Brian for all your work drawing & making the plans available
I had material to make the cylinder head. Brian mentioned this would probably be the hardest part of the build, I thought this would be a good place to start.
Next was the Cylinder mounting plate.
Connecting rod roughed out with the bandsaw.
The 11/32 reamer needed to finish the valve cage bores arrived. So, making the cages & valves were next.
After lapping the valves, grinding the e-clip grooves, parting them from the "handle" & making the retainers was complete.
The cylinder head with rocker arm tower, rocker arm & valves installed is complete. The pin holding the rocker arm will be trimmed to the correct length.
The material for the Cylinder & Frame arrived from Hobby Metals.
Here the cylinder is rough drilled & fins have been cut.
After boring the cylinder, the final measurement came out perfect!
And this is as far as I am....The cylinder has been honed but not polished. In the background is the piston, a few tenths oversize & counter bored. waiting to final fit before parting off. That block of aluminum under the cylinder will become the frame of the engine.
For my other engines I bought gears. I haven't made gears since Vo-Tech....back in High School, which was many, many years ago! I ordered the cutters, have the blanks turned & have been "studying-up"
Thanks for taking a look,
Jack