[Vwdiesel] OT: electric motors

[Finn Rod]

Sorry this is a bit off topic but I know there are people here who can do this stuff in their sleep and to be honest electricity and me just do not get along...

I have built a few felt rolling machines and on the last one I used a .65kw 3phase motor converted to single phase use with a capacitor. This I have been told, reduces the power 
available so firstly can anyone tell me how to work out what the equivalent wattage would be now??

Secondly; it's running at 1450rpm, with a gearbox on it, resulting in about 60rpm output. Can  anyone tell me how to work out how much power/torque/momentum (or whatever it's called... ) is being produced on the final drive shaft?? I want to know how "strong" it is...

I need a number and a unit so I can work backwards and find something that has similar power/force capabilities, but possibly less kw/3phase/more rpm/different gearing and final drive speed options...

You can tell I have no idea what I'm talking about can't you...
Any advice would be greatly appreciated...