GRAUPNER life at the extreme 2131 Operating Instructions Manual page 16

Sail trim
The foresail of a yacht should always be slightly more open than the mainsail when close-hauled (mainsail
around 10° midships; foresail about 12° close-hauled) so that the airflow from the foresail is directed onto the
rear face of the mainsail, rather than being deflected into the front of it. The difference required varies according
to the wind and weather, and can be adjusted on the LIFE AT THE EXTREME by altering the sheet clamps,
either on the main boom or the jib boom.
If the boat does not maintain its course in a constant light wind and at a
slight angle (heel) when luffing, then the trim of the rig is not correct, i.e. the
centre of pressure of the whole sail area needs to be altered. In the case of
the LIFE AT THE EXTREME this is achieved typically by adjusting the mast
rake (inclination):
Situation / Behaviour
Windward tendency (the boat
tends to turn into the wind by
itself (it luffs up).
Leeward tendency (the boat
tends to turn away from the
wind by itself (it bears away).
Caution: a boat's tendency to turn into or away from the wind is also
affected by the sail settings; for instance, if the mainsail is set too tight by
the kicking strap, or if the foresail is set too close-hauled or too far open.
In general terms sailing boats offer their maximum performance if they have
a slight windward tendency. The optimum setting can only be established by
experimenting; please bear in mind that it also varies according to the
weather conditions.
Maiden run
Wait for a day with optimum wind conditions, and seek out a stretch of water where you can easily salvage the
boat. Charge up the batteries, and check the model's working systems. Ensure that all parts are securely
attached. Now you are ready for the boat's maiden run. Be cautious at first, and take your time to get used to
the boat's sailing characteristics and handling. Don't sail the model too far from the bank initially.
All of us at GRAUPNER hope you have many hours of pleasure building and running your LIFE AT THE
EXTREME.
The following items are also required (not included in the kit)
Recommended accessories
Order No. Description
3426 Graupner Alkaline AA dry cell for transmitter and receiver power supplies (twelve cells required in
total)
Optional accessories (instead of dry cells)
Order No. Description
8716.BEC 4N-1600 A receiver battery, 4.8 V / 1.6 Ah
2498 Enekeep 1N-2000 NiMH RTU transmitter battery, 1.2 V / 2.0 Ah (eight cells required)
A suitable battery charger and charger box are required, as the transmitter's charge socket is not compatible with standard
Graupner charge leads. Please ask as your model shop for details.
Replacement parts
Order No. Description
2131.2 Hull
2131.3 Hatch cover (2 off)
2131.5 Rudder system (2 off)
2131.6 Keel and supplementary keels
2131.7 Sail suit
GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
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Solution / Adjustment
The mast is raked too far back, and
needs to be tilted forward (loosen
backstay, tighten forestay).
The mast is raked too far forward,
and needs to be tilted further back.
#0060946
16
08/2009