I would love to find someone that could give me some info on building a simple dyno. One horse power is something like 460 watts, don't take that to the bank but for what I'am asking it will do. If I take an altenator and hook up my engine and it puts out 920 watts will that mean it has two horse power or is there a serten type of configuration that must be used.I'am sure that a large alternator would take more power to spin than a smaller say kabota stile would need. So does anyone know anything about this?