30
12. Deploying the aileron servo leads
Deploy the servo leads towards the wing centre; you may
need to use extension leads. Place the lead in a straight
line along the front edge of the spar well, standing on edge.
The leads must project by about 120 mm at the wing root,
so that they can be connected to the receiver when you
assemble the model. Fix the leads in the centre of the
wing with a drop of hot-melt glue.
13. Attaching the aileron horns
Insert the pushrod connectors 25 in the outermost hole in
the aileron horns 24. Secure them with the washers 26
and nuts 27. Caution: prepare one left-hand horn, one
right-hand horn! Tighten the nuts carefully (don’t overtighten
them), and secure each with a tiny drop of paint or cyano,
applied on a pin. Fit the socket-head grubscrews 28 in the
pushrod connectors 25 using the allen key 29. Glue the
horns 24 in the recesses in the ailerons using activator
and cyano; the row of holes must be at the hinge line.
Fig. 38
14. Installing the aileron pushrods
Connect the pre-formed end of the steel pushrods 30 to
the innermost hole of the servo output arms, and slip the
plain end through the pushrod connectors 25. Set the
ailerons and servos to neutral and tighten the grubscrews
28 to lock them.
Fig. 39
……………………………………..
15. When the model is assembled, the wing is attached to
the fuselage using the plastic screw 32. Fig. 40
16. Installing the receiving system
The remaining RC system components can now be installed
in the cabin area, and the flight battery installed. It is
important to position the battery in such a way that the
model balances at the stated CG position. See Fig. 43.
It is possible to fit many different types and shapes of
battery in the front end of the fuselage. If it is not possible
to obtain the correct CG by re-positioning the battery, lead
ballast can be fitted at the nose or tail.
The kit is supplied with self-adhesive hook-and-loop tape
20 + 21 for securing the RC components. However, the
adhesive on the tape is not always adequate, so it should
also be glued in place with cyano.
Place the receiver vertically in the fuselage, behind the
wing retaining screw. Run the wire aerial out of the fuselage
and tape it to the underside at the tail. The excess length
can simply be left trailing freely.
Fitting the propeller
Before the first test run the propeller has to be fitted on the
motor shaft. Fit the propeller driver complete with propeller
onto the motor shaft. Hold the propeller firmly in one hand,
and clamp the collet on the shaft by tightening the aluminium
spinner, turning it in a clockwise direction.
Fit a screwdriver through the cross-hole in order to tighten
the spinner, as this gives greater leverage. The spinner must
always be really tight.
Don’t connect the battery to the speed controller until
you have switched the transmitter on, and have
checked that the throttle control is at the “OFF”
position.
Switch the transmitter on, connect the flight battery in the
model to the speed controller, and the controller to the
receiver.
Now switch the motor on briefly and check once more that
the propeller is rotating in the correct direction. Note: when
test-running the motor always remove all light objects from
the area in front of and behind the model, and hold the
aeroplane firmly.
Caution: even small motors and propellers are
capable of inflicting painful injuries!
17. Setting the control surface travels
It is important to set the control surface travels correctly,
as these settings have a crucial influence on the model’s
overall control response. In all cases the travels are
measured at the point of maximum chord (width of control
surface.
Elevator
up - stick back - approx. + 11 mm
down - stick forward - approx. - 11 mm
Rudder
left and right each way - approx. 6-10 mm
Ailerons
up - approx. + 7 mm
down - approx. - 3 mm
Note: when you apply a right-aileron command at
the transmitter, the right-hand aileron (as seen from
the tail) must deflect up.
If you find that you cannot set the correct control
surface travels with your radio control system, you
will need to change the linkage hole to which the
pushrod is connected.
18. Balancing
To make your FunMan fly safe and stable it must be
balanced at the correct point or C.G. (Centre of gravity) -
just like every other aircraft. Assemble your model
completely, ready to fly, and install the flight battery.
The Centre of Gravity should be at a point 67 mm aft of
the leading edge of the wing, measured where the wing
meets the fuselage. You will find the markings moulded on
the underside of the wings.
Support the model on your fingertips at the marked point,
and it should balance level. If necessary, adjust the position
of the flight battery until the plane wings levels. Once the
correct position is found, mark it inside the battery box to
ensure that the battery is always replaced in exactly the
same location. Fig. 43
19. Preparing for the first flight
Wait for a day with as little breeze as possible for the first
flight. The evening hours often provide the best conditions.
