Need to find a waterjet designer...

Hi Folks,
I am designing/building a small personal watercraft that utilizes a custom designed waterjet for propulsion. I've got some basic parameters for the design like impeller diameter (58mm), thrust, power, etc., but I need someone who can review and optimize the design (pitch, rpm, nozzle, etc) to make sure it works re cavitation, maximizing efficiency, etc.
If anyone can recommend someone who can do this it would be greatly appreciated.
Thanks,
Nick

 

If you go to you "contact" in your personal information and activate email and conversations, I will send you information about it. Thanks

 

Thanks gonzo. Newbie here and having trouble finding that option. I've tried everything in the profile page sections, but nothing.What am i missing? Is there a help page on this?

 

Welcome to the forum npagazani. The Conversations option has now been enabled for your account. (Sorry, this is off by default for brand new members until you've made a few posts on the public forums and a short time delay in order to reduce the chance of spam.)

 

Thanks!

 

I'm in a similar boat as you OP, trying to build a PWC SUP but with a 65-75mm jet and a 7hp gas motor. Any chance you've been reading the 3d Printable Jet Drive project on RCGroups? 3D Printable Jet Drive project - RC Groups https://www.rcgroups.com/forums/showthread.php?2826297-3D-Printable-Jet-Drive-project

 

Hi Eldias, sounds like a fun project. I haven't followed that thread but will be sure to browse through it now. Thanks for the link. I've actually had a short set-back as I've had an expert completely debunk my jet design design. Some of which I agree with, and some I don't. I've also contacted the MHZ guys and they have tried what I'm trying and have had some luck on a foil board using their own 64mm jet vs the 58mm I'm trying to get away with. If you're just doing a regular SUP board you should be fine with that size jet. The only issue would be the RPM you can get out of the gas motor. The guys at Lampuga are using the MHZ 64mm jet with an electric motor rated at about 15hp, at up to 15,000 RPM. It goes pretty good, up to 50 km/h if I recall.

 

I picked up an old Evinrude Fleetwin from 1952, It's 7.5hp at 4000 rpm if I remember right. I figured I'll need to do some gearbox magic to get the rpm high enough. The goal is a 12'6" board, chisel nose, with a total capacity around 150kg (rider + propulsion + fuel + gear). Still a lot of design questions to answer, but I'm really hoping this 3d printed jet drive fits the bill. I'll keep ears out for more small jet drives and let you know if I find anything else too.

 

Hi:
New here and saw this and i have a 3D printer that can print up to 210 x 210 x 180 mm if you have some CAD\CAM files you can sent me and it can look them over and try a small test prints out of abs or pla if this helps send them here revumupslc@gmail.com and my building a machine 500 x 500 x 600 now will have it up for testing next month i hope.
Im looking in to doing a ls 6.2L supercharge engine insted of a 600 hp BBC for rpm range , weight fuel usage and power.