The drive shaft that Howard Kittleson created to rebore the cylinder on his 1919 9 HP Type E Economy. Howard fabricated the tooling for the project, and used his 1942 16-inch-by-102-inch Monarch lathe to make the cut.
The power feed end of the hex drive shaft attached to a bearing, which is attached to the lathe tool holder. The lathe feed then pulled the hex shaft through the sprocket hub along with the boring bar and cutting tool.
The hex drive shaft and sprocket hub, which is clamped in the chuck to provide the boring rotation.
The front bearing support, tool holder and cutting tool finishing the cut.
The rear bearing support with rear centering ring in place. Note the fabricated bracket and shims to locate the bearing vertically. After the bar was aligned, the centering rings were removed.
Honing with a Sunnen hone.
The finished bore after boring and honing.
The old piston (left) and the new piston. Howard fabricated the new piston out of steel.