Flywheel, Fuel System, Painting and Assembly

Part four in a five-part series: Restoring an Amanco Hired Man

| April 2006

The flywheels, as befitting an early Amanco, are 2-1/4 inches wide and 18 inches in diameter. They were very rusted so I decided to try and machine them to remove the majority of the pitting from the sides and face.

Unfortunately the maximum size I can turn on my lathe is 10 inches, and the largest lathe I could beg any time on only swung 14 inches. Fortunately my milling machine worked on the horizontal as well as the vertical, and by making a special mandrel to fit the horizontal taper I was able to true up the flywheels.

The pulley was far easier to clean up, as I was able to mount this on a mandrel on my lathe. It looked as good as new when finished with only a modest amount of metal being removed.

The springs and adjusting bolts on the governor assembly needed replacing. The springs were purchased and new adjusting stems made from 1/4-inch steel rods. I also made new square head bolts and adjusting nuts, and cleaned out the threads in the weights.

The floating guide for the governor was very thin from rust and a new one was turned from a  1-5/16-inch length of 2-1/4-inch diameter steel (dimensions for the grooves being estimated from the original, and the size of the 1/2-inch brass bush on the speed detent arm).

The brass bush on the detent arm was misshapen and a new one was made from 1/2-inch diameter brass that left a rolling fit on the arm.


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