This edition starts with the bearing. The profile was turned.
Then the bore was drilled and reamed.
The part was taken over to the mill where the intake port was drilled.
Then the inlet tube was soldered in.
The next assembly was the crankshaft. I started by turning the the crank disk.
The center hole was drilled and reamed.
Over to the mill where the crank pin hole was was drilled.
Then the crank shape was milled out.
Then the piece is parted off and the crank pin hole was tapped.
Next I turned the crank shaft profile.
Next I drilled the exhaust.
Then it was into the collet block andover to the mill where the exhaust flat was milled.
Then the hole connecting the flat to the exhaust was drilled.
Then I flipped the the shaft over and milled the intake flat. The shaft was then pressed into the crank.
Then the piece was trued up in the lathe.
The next part was the flywheel. I faced blank on both sides.
I drilled and reamed the center hole.
Then the decorative rebate was turned into both sides.
Then I drilled and tapped the set screw hole.
Then I put the flywheel on a mandrel and trued up the flywheel.
Next I started on the piston assembly. I turned a piece of tubing to a slip fit into the frame assembly.
Then the piston was parted off and filed to fit the tubing.
Then I drilled for the connecting rod.
Next I turned the connecting rod profile.
Next I drilled for the crank pin.
That's where I ran into trouble. When I test fitted the connecting rod to the piston it was to short. I forgot to add extra length for the dead center. I ended up remaking the connecting rod. Then I tried to solder the piston to the connecting rod. I melted the piston while I was heating up the connecting rod. I had to remake both parts. The end result was this.
The last piece I made was the crank pin. I turned some hex stock to the correct profile.
Then I threaded the end.
I'll end this with a family shot.
All I have left is the polishing, blueing and assembly.
Tony