I don't know how many bpm"s it makes but enougth and slow enough to point 1/4" stock ..I have forged probably 2- 3 hrs.
at a time,the only load is start up and that's not much..It has a 15" tire with a 3" roller and uses a slide behind the hammer instead of a tup in a tube like Clay's hammers,which IS a simpler method,,,,,still the best mechanical jyh design out there IMO