GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
No liability for printing errors. We reserve the right to introduce modifications.
04/2011
7
full-throttle mixture screw by 2 full turns, in both cases turning the screw anti-clockwise. The engine should
run at these basic settings, but is very likely to require further adjustment.
Running-in a new engine
For the first two tankfuls you should avoid running the engine at maximum speed as far as possible. The
engine can then be considered to be run-in, and is safe to run for long periods at full speed.
Engine repairs
If your engine requires repair, please don’t attempt to carry out the work yourself. Remove the engine from
the boat and send it to the Graupner Service Centre (address on page 1) for repair.
Adjusting the wings on the model
The front and stern wings on the boat can be adjusted to suit the water conditions. For the first few runs we
suggest that you set both wings parallel to the surface of the water. As a basic rule, always adjust both wings
in the same direction.
Front wing:
the purpose of the front wing is to prevent the boat’s bow rising, which could cause the model to
flip over. If the boat should turn over, you can usually expect it to sink or at least suffer major damage, so this
must be avoided at all costs. For this reason please take particular care when adjusting the front wing, and
make any alterations in very small stages - particularly if you are raising the wing with the aim of elevating
the bow at speed.
Stern wing:
this is intended to raise the stern just to the point where the propeller is able to run in the semi
surface-piercing state (this term means that only the lower blade is in the water at any one time). A raised
stern also minimises the danger of the boat flipping over.
Adjusting the shaft strut on the model
The propeller is correctly adjusted when the rotational axis of the shaft lies parallel to the surface of the water
when the boat is running at maximum speed. The shaft strut is held in place by a single screw; always
tighten this screw firmly, as the propeller exerts a powerful moment on the shaft strut and will try to move it
out of position.
TIP:
shifting it in the downward direction raises the stern, while moving it upwards lowers the
stern.
TIP:
once you have established the optimum setting for the shaft strut, we suggest that you drill a
through-hole and fit an M2 screw through it to prevent the setting being lost accidentally.
Maiden run
Give all the batteries a full charge, and carefully check the boat’s working systems one by one. Only then
should you fill the fueltank and start the engine. Secure the hatch cover carefully, so that it cannot possibly
fall off. Check the effective radio range with the engine running. When you are satisfied, you are ready for the
boat’s maiden run.
NOTE:
at all times when operating the model take care that no part of your body can
contact the propeller. Run the boat slowly at first, and take your time to become accustomed to its handling
characteristics. Please bear in mind all the time that the boat is not capable of reversing, and this will dictate
which manoeuvres are safe or feasible.
NOTE:
if you have to turn the boat tightly, reduce the throttle
substantially to avoid any risk of the model turning over.
All of us hope you thoroughly enjoy running your GRAUPNER HYDROPOWER.
Replacement parts
Order No.
Description
2066.2
Hull
2066.3
Hatch
cover
2066.5
Rudder system and shaft strut
2066.7
Flexi-shaft
2317.76
Propeller
Model shop
NGK BP MR6A sparkplug
Accessories (not included in the kit)
Order No.
Description
33112
mx-12 HoTT 2.4 GHz RC set
7986
HBS 770 high-voltage digital servo (two required)
7672.2
LiFE 2/2900 receiver battery, 6.6 V
3934.3
Switch
harness
3368.1
Velcro tape, 100 mm long
You can find the current accessory list on the website at www.graupner.de
