Multiplex EASYCUB Notice De Construction page 19

EasyCub Power Set, Order No. 33 2637.
The set consists of a Himax C 2816-1220 motor, a BL 27/II
speed controller, a 10 x 5" propeller and a propeller driver.
15. Attaching the motor bulkhead to the motor mount
The motor sidethrust and downthrust can be adjusted using
the motor mounts 37 and the motor bulkhead 38. Fitting the
four adjustor screws 39 flush installs the mount asymmetrically,
giving maximum sidethrust and no downthrust. The basic
position for the EasyCub is set as follows (note that we are
looking at the rear (!) of the motor bulkhead). Fig. 20
Upper left adjustor screw
turns
Upper right adjustor screw
turns
Lower left adjustor screw
turns
Lower right adjustor screw
turns
The screws should project by the values stated above. The
settings may require fine-tuning during the test-flying
programme.
16. Installing the motor
Attach the motor to the motor bulkhead 38 using the retaining
screws included in the power set. Install the motor as shown
in Fig. 19.
17. Installing the canopy latch tongues
The canopy 5 is first slid into the fuselage towards the wing,
and only then folded down at the front. Temporarily insert the
two latch tongues 23 in the canopy, and position them as
shown in the illustration. Apply high-viscosity (thick) cyano to
the textured surfaces, then fit the latch tongues into the slots in
the canopy. Place the canopy on the fuselage, and allow the
latch tongues to engage in the latches 22. Check immediately
that the canopy is correctly aligned with the fuselage. Wait for
about one minute, then carefully open the canopy again. If
necessary, apply more glue to the latch tongues to reinforce
the joints.
Fig. 21
18. Installing the flight battery and receiver
The space for the flight battery is under the canopy, extending
back under the wing saddle. The battery is held in place using
the Velcro tape 20 / 21.
The speed controller fits on the fuselage side on one side of
the battery. The receiver should be installed below the wing
saddle, again using the Velcro tape 20 / 21.
Fig. 22
If the controller is connected to the motor, do not connect
the battery to the speed controller without first switching
the transmitter on and ensuring that the throttle control is at
the "OFF" position.
Connect the servo leads to the receiver. Switch the transmitter
on, connect the flight battery (installed in the model) to the
speed controller, and connect the speed controller to the
receiver.
Now switch the motor on briefly by advancing the throttle stick,
and check that the propeller spins in the correct direction. When
test-running the motor be sure to hold the model securely, and
remove all loose, light objects before and behind the model
before the propeller does the job for you. If the motor rotates in
the wrong direction, swap over any two of the motor connections
- never swap over the battery connections.
Caution: there is a serious risk of injury in the area around
the propeller!
19. Deploying the aerial on the underside of the fuselage
The wire receiver aerial should be routed through a hole in the
underside of the fuselage and deployed towards the tail.
You will need to pierce a hole in the fuselage from the outside
before threading the aerial through it from the inside. Tape the
aerial to the fuselage. If the aerial is longer than the fuselage,
simply allow the excess length to trail freely.
1 mm = approx. two
20. Setting the control surface travels
1 mm = approx. two The control surface travels must be set correctly in order to
obtain a balanced control response from the model.
1 mm = approx. two
1 mm = approx. two
Elevator travels:
Rudder travel to left and right:
Note that the stated travels are measured at the widest point of
the control surface.
21. Gilding the lily - applying the decals
The kit is supplied with a multi-colour decal sheet 2. Cut out
the individual name placards and emblems and apply them to
the model in the position shown in the kit box illustration, or in
an arrangement which you find pleasing. The decals cannot
be re-positioned once applied, so place them carefully!
22. Balancing
Like any other aircraft, the EasyCub must be balanced at a
particular point in order to achieve stable flying characteristics.
Assemble your model ready to fly, and install the flight battery.
The Centre of Gravity (CG) should be at a position 80 mm aft
of the root leading edge, i.e. at the fuselage sides. Mark this
point on both sides of the fuselage.
Support the model at this position on two fingertips, and it
should balance level. If not, you can move the flight battery
forward or aft to correct the balance point. Once the correct
position is found, mark the location of the flight pack inside the
model to ensure that it is always replaced in the same position.
The CG location is not critical - 10 mm forward or aft of the
stated position presents no problems.
Fig. 23
23. Preparing for the first flight
For the first flight wait for a day with as little breeze as possible.
The early evening is often a good time.
Be sure to carry out a range check before the first flight!
Just before the flight, charge up the transmitter battery and the
flight pack using the recommended procedures. Ensure that
"your" channel is not already in use before you switch on the
transmitter.
Ask your assistant to walk away from the model, holding the
transmitter. The transmitter aerial should be fitted but
completely collapsed.
Your assistant should operate one of the functions constantly
up (stick back towards you)
down (stick away from you)
15 mm
12 mm
15 mm each way
19