Hi, I have an electric motor of 45 kW, 6000 rpm and Torque Max 210 N·m (nominal 120 N·m). PWC could weight 300 kg more or less. Do you think it is ok to use a jet pump? Which kind of impeller do you recommend me?
Thanks again!
That's 155ft-lbs approximately. Are you building PWC from scratch or converting existing PWC? I think an open propeller is unacceptable in the case of a normal sit on top PWC, too dangerous. I think if you will convert a PWC, then you should try the existing impeller but I tend to think you will need a larger impeller, maybe largest available. By large, I mean most pitch available, maybe custom pitch.
But first, in the case of conversion, I would test the existing impeller and go from there.
It's unfortunate, but in my opinion the jet pump is not the most efficient means for pushing any water vessel but an open prop is too dangerous for a PWC?
We have already many electric outboard motors which you could choose from to propel a boat of some type, the Ray electric motor is often used here where drinking water reservoir is of concern, there are others as well, I have fitted several of the Ray outboards to pontoon type boats in the past, it's a popular alternative on a local reservoir:
http://www.rayeo.com/motors/motor-info/specifications/
Interesting project, I hope it meets your expectations.
