FWIW, in the automotive arena, the common flywheels had 130, 143, and 172 teeth. The 130 tooth is a 10-1/2" and 11" scalloped plate. The 143 tooth is an 11" as well as the 172 tooth "Hemi" plate.
The amount of imbalance added to a neutral balance plate for a 360 …..
The crank flange BC (less...