project Robbe Prinzess

I am speechless, how can somebody just knock up a jet outboard. I have watched the Russian full size version and been well impressed. Having developed my own outboard ,prop type I know it took months of work with loads of failures as Michiel will agree. We need to see drawings and lots more info, this is exciting.

 

is gewoon een surpass hobby motor ik gebruik zelf 2s maar loopt ook lekker op 3. heeft waterkoeling in staartstuk

 

Bit of digging and I found this, it's got some power, looks like the water is picked up from the rear . There is a shield to protect the leg.

 

Good to see one more project with outboard motor

 

Asked Sundogz how far he was with his waterjet-outboard...
But that project is parked for other waterjet related projects.

So this is the only waterjet outboard in RC I know of.
Well done!

The concept is perfect, since bevel-gears always consume power due to the relatively high amount of friction.
Than again, true scale outboards from Yamaha and Mercury are 15% less efficient than the version with a propeller and bevel-gears.
Those use a centrifugal pump as well to avoid the bevel-gears.

The Russian development was a true axial waterjet-outboard with bevel-gears!
Wonder how that will work:



The inventor of waterjet propulsion, Hamilton from New Zealand started with centrifugal pumps, but abandoned those early for axial impeller pumps.


Ik heb het youtube kanaal inmiddels van de Duitse ontwerper gevonden, maar is er ook een website van?
Of een forum-thread ergens?

 

thats the guy i bought it from

 

nee hij doet het vooralsnog prive volgens mij

 

Gelijk heeft hij, jammer genoeg.
Zelf een aantal gratis te 3D printen waterjets beschikbaar gemaakt, en vervolgens zijn ze op Aliexpress te koop

Heel leuk, maar persoonlijk hou ik het bij inbouw water-jets!
Mooi dat hij trouwens SLA gebruikt om ze te printen!

 

Can I ask what it cost, and how to contact for purchase, i might be interested.