Premiant II
Premiant II building instructions
5
nose until it lines up correctly with the spinner. Work slowly and check often - you will be rewarded
with a perfect result.
Now install the motor and connect it to the speed controller, taking care to maintain correct
polarity. It is best to check the direction of rotation of the output shaft before installing the motor.
You will find it easier to check the direction of rotation if you push a small block of wood on the
shaft, drilled centrally to suit the shaft diameter.
Do not use a propeller - injury hazard!
Install the folding propeller, hub and spinner as described in the manufacturer’s instructions.
Receiving system
Install the servos in the servo plate, and connect the steel pushrods to the output arms.
We recommend that you permanently plug short extension leads into the receiver, as this makes it
much easier to connect the aileron and spoiler servos. Mark each lead carefully, indicating which
servo is connected where, so that there is no chance of mixing them up when you rig the aircraft.
Install the receiver, and secure it with foam packing.
The speed controller should be placed on the
opposite side of the vertical balsa plate. It
must not
be packed in foam, as this would
cause it to overheat in flight.
The final stage is to screw the battery support
to the top of the sub-structure.
Adjust the position of the flight battery to
obtain the correct Centre of Gravity
(68 mm
from the root leading edge)
.
Fix the battery in its final position using Velcro
(hook-and-loop) tape.
Adjustments
First switch the transmitter on, and then the
receiver. Check that the throttle stick is at the
STOP position.
Check the control functions: the rudder travel should be 20 mm to left and right of centre; the
elevator requires 8 mm up-travel and 8 mm down-travel. Check and check again that all the con-
trol surfaces move in the appropriate direction, i.e. that “left stick” really does mean “left rudder”,
etc.
The correct aileron travel is 10 mm up and 5 mm down. For a right-hand turn (right stick) the right-
hand aileron must deflect up, the left-hand aileron down.
Finally check the power system:
caution - the spinning propeller represents an injury hazard!
First flight
If everything is in order, there is now nothing to stop
you carrying out the model’s first flight.
However, we urgently recommend that you join a model flying club and ask an experienced model
pilot to help you: he will carry out the initial test-flights for you, and then help you to learn the art of
model flying step by step.
It is also possible to learn to fly without outside help: first wait for a day with little or no breeze.
Launch the model with a firm push forward into any wind, keeping the wings and fuselage level.
Allow the aircraft to climb at a shallow angle, initially using the elevator only to adjust the rate of
climb. Don’t let the model slow up too much. If it turns to one side, move the rudder in the opposite
direction to return to straight flight.
Once the model is at a safe altitude, switch the motor off and allow it to glide. Use the controls
very gently at first until you feel familiar with the aeroplane’s response to commands. Don’t get
over-confident too quickly, and maintain plenty of height at all times - model flying is a
sophisticated skill which needs to be learned, just like driving a car or riding a bike.
Always land the model with its nose pointing directly into wind. Let it glide towards the ground at a
shallow angle, and d
on’t apply up-elevator until it is just about to touch down. Never carry out any
major corrections with the rudder when the model is close to the ground!
Safety notes, hazard warnings
Model flying is a fascinating hobby. However, when flying a model aircraft we urge you to observe
the following basic rules, as this will avoid annoying and endangering anyone else.
