Re: Model A flywheel
Usually the engines are not built to tight enough standards.
From the factory the rods were +- 1 gram at each end, the piston rod unit were within 4 grams.
The crank was ground to tight tolerances with the mains on center and the flywheel less than .001" from center. Both were dynamically balanced.
Today the rods are often within 5 grams total weight. Pistons can be all over the place. Grinders may get centerlines and throws off center and out of place. The flywheels can be way out, we have crank that is .008" out on the flywheel.
So you can have a pile of issues on an engine if the builder was not accurate in the build.
The best thing is to pretend you are building a race car engine. Then you will be building it like Henry did on the line.
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