I now have enough progress to do another installment of this build log. The next piece to be made was the support bracket that holds the back end of the piston rod. I started by squaring up a small brass off cut. Then I marked out and drilled the holes. (Sorry about the pic quality)
Then the sides were profiled. Looking back at the image I have to say that wasn't the most secure setup I've ever done but it worked.
To round over the end I made a couple of fileing buttons and went to town.
With the bracket done it was time to start the flywheel.
The part was marked out in the lathe.
Next the flywheel was grooved.
The part was drilled and parted off.
Then the part was flipped around and the other side was grooved.
Next the flywheel was mounted on a mandril and trued up.
Then it was over to the mill to drill and tap for the set screw.
The next part was the yoke. The blank was squared up, drilled for the piston rod, and then the main slot was milled out.
The cross slot was then milled into the piece.
Then the part was taken over to the lathe and dialed into my four jaw chuck. For some reason, this is a task that always kicks my rear end. This case was no exception. I ended up putting off making this part because I was dreading the need for the four jaw. In the end I got it done.
The end of the part was profiled.
Then the hole for the set screw was drilled and tapped.
That completes the parts so I started assembly. First I soldered the intake tube onto the bearing. That was a complete horror show. I used way to much solder and it took me forever to file off the excess and clean up the part.
Next I pressed the bearing into the frame.
That allowed me to finish drilling the air passage.
Then the holes were plugged and and the excess was filed off.
Unfortunately I did the job to well. I ended up plugging the side hole to the cylinder. I had to drill out the plug and clear the hole. I put in a replacement and I am waiting for the sealant to cure. All I have left is to do is file down the plug , blue the flywheel and yoke and then hopefully we'll have a runner.
Tony