This is a four day weekend for me so I had plenty of time to make some serious progress. I started by making some hardware. I turned up the crank pin and gland nuts for the cylinder and valve chests.
Next I fabricated the eccentric rod. I turned and reamed a piece of brass to fit over the eccentric.
Then it was parted off and a slot was cut to take the rod.
The rod was drilled for the pin and soldered to the ring.
Then the part was pickled and the end rounded over.
Next was the eccentric itself. The initial shape was turned in the four jaw and the center drilled and reamed.
Then the offset was put in and the eccentric was turned to a slip fit on the eccentric rod.
The next part was the valve rod. I don’t have a center small enough to turn this part with support. It was shaped by turning small segments and then extending the part. Then the segments were blended with some emory cloth.
The part was threaded and then taken to the mill where the flats were milled and the hole drilled.
Then the end was slotted with a slitting saw.
With the valve rod done it was time to make the connecting rod.
This was turned to shape with tailstock support.
Then the flats and holes were put in on the mill.
After parting off the connecting rod I started on the flywheel. It was fettled to clean it up and mounted in the three jaw and the hub cleaned up.
The part was flipped and the inner rim cleaned up.
The part was flipped again and grabbed by the inner rim to reduce chatter. The side, rim and hub were taken to dimension.
There are a couple of blowholes in the rim so I am going to fill them and paint the whole thing. Next the center was drilled and reamed. The flywheel was superglued on to an off cut of the drill rod used to make the crankshaft and trued up.
The last thing done on the flywheel was to drill and tap it for the grub screw.
The last piece to make is the crosshead. The blank was squared up then drilled and tapped to screw onto the piston rod.
Then it was drilled for the cross pin and slotted.
Lastly the two relief cuts were made.
Here is the final family shot.
I’ll end with the engine temporarily assembled for a test run.
Now I have to take it all apart for paint and lag the cylinder. Till next time
Tony
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