Parts & Accessories Spare parts 3 Dynamos, one is 10 horsepower, the second is 30 horsepower, and the third is larger, but it doesn't have a nameplate for identification, but it's likely 40 horsepower or larger. According to the electrician who inspected them, they are working, but the 30 and 40 horsepower ones need their casings changed because there is a crack.