The valves are made up of two pieces and silver soldered together. With this method, the long, slender valve stem is already precision ground and doesn’t need to be further machined.
The parts before and after silver soldering:
The valve head is finished in the lathe:
Last, the valve stem is turned to length and a groove for the spring retainer is cut:
The finished valves:
Another part for the cylinder head is the bracket for the rockers.
First, the stock is clamped vertical in the vise, to machine the contour and drill the hole.
The work piece is laid horizontal to mill the bracket to finish width:
The bracket is cut off the remaining stock with the cold saw:
The last operation is to clean up the saw cut, milling the bracket to final thickness. Drilling the mounting holes, and tapping for a set screw that will hold the rocker shaft in place. The paper in the vise is to protect the finished surfaces from getting marked up.
The finished bracket:
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