I'm in the process of converting a small tractor to electric drive. The original engine is 12hp but the same tractor had options up to 18hp. I'm doing this on a tight budget so looking for a used forklift motor. I am having difficulty finding an appropriate motor mostly due to the lack of available specifications on these old motors. I'd like to find one in the 6-7 inch range that I can get up to 3600 rpm. I assume the duty rating needs to be continuous or at least rated for 1 hour. Does anyone have any suggestions? I've read the the massive forklift motor thread and it is helpful but overwhelming.