Flywheel, Fuel System, Painting and Assembly

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

| April 2006


The assembled flywheel showing the governor springs and adjusting screws. The new key and post for the starting handle are also visible.

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.