jet-drive configuration

[james.c.a.]

does anyone here know of a jet-pump manufacturer i could contact that would be able to design a specialized one for me?

[Toplana]

I have some exeperience with RR Kamewa. They have many waterjet models and they can make an adjustments of every existing model so they can match your particular project. What kind of vessel we talk? Loa, Boa, Disp., Speed?

[james.c.a.]

I'm looking for quite a small unit. its a small hobby of mine, converting an old 4hp outboard into an inboard jet drive on a 2.5m valiant rib. I know a standard pump from a jet-ski would do the job as they can provide better overall efficiencies than conventional propellers, although i was wondering how a properly selected drive would differ on a vastly lower power unit? Not sure what the displacement is, however on this size craft I think its slightly dependant on the operator (120kg?).