The Graupner Jet-Drive can be used for racing boats, ferries
and fast yachts where direct and precise control is needed.
The Jet-Drive is designed around a pump that draws the water
through an opening at the bottom of the hull which is then accelerated via an
impeller and then ejected through an opening from the rear. Here the Newtonian
law applies, according to which the backward jet of water produces an equally
great forward reaction to the boat body.
Boats equipped with jet propulsion can drive in very shallow
water, since all the parts under the hull such as propeller, shaft and rudder
are replaced with the Jet-Drive. In addition, the approach acceleration is very
high, which is particularly advantageous for dragster boats.
There is also no heeling moment as with a conventional ship
propeller therefore increasing ship stability on the water. Please note that the
water in a jet drive must travel longer distances through narrow ducts,
friction losses occur which require a little more energy than in a conventional
drive so make sure your power system is capable in handling the extra loads.
When the reverse drive is actuated, the water jet can be
deflected forward so that the ship moves backwards. For high efficiency the
engine speed should be reversed only 1/3 to 1/2 the maximum speed.
The Graupner Jet-Drive is suitable for SPEED 600 series
electric motors as well as brushless motors. This Jet-Drive is also used with
our Multi-Jet boat P/N 2155.V2.
- Easy to assemble
- All parts included
- Optimized for Graupner Navy VR30 ESC
- Injection molded parts
- Motor coupling
- SPEED 600 brushed motor
- Assembly manual