our Sun Dancer 50 prototypes, we located the battery pack
directly beneath the fuel tank. First wrap the battery pack in foam
rubber and cover it with a small plastic bag before inserting it under
the fuel tank. Use a little extra foam rubber as needed to keep the
pack from shifting.
The receiver should also be wrapped in foam rubber. First make
the required connections for the throttle, rudder, and elevator
servos.
Also install the Y-harness connector into the aileron
receptacle. Wrap the receiver in foam rubber and mount it in place
just ahead of the fuselage servo tray, using rubber bands to secure
it. The two connectors from the Y-harness should be free and
easily accessible.
Some radio systems (especially older systems) may be sensitive
to the relationship of the receiver antenna running parallel with the
braided metal cable pull-pull rudder system and/or the elevator
servo extension cable.
We, therefore, recommend that the
antenna be routed outside of the fuselage, back to the top of the
vertical fin. A neat way to do this is to use a piece of the inner
throttle pushrod to make the exit mast as shown. The top of the
tube extends about 1" above the fuselage behind the cockpit. The
lower end of this tube extends slightly below the hole in the servo
tray and is secured with a scrap of wood. The antenna is routed
from the receiver to the lower end of the tube, up through the tube
and then back to the top of the fin as shown. The antenna is
attached to the top of the fin, under slight tension, with a rubber
band that is looped around the antenna at one end and a pin in the
fin on the other end.
The on/off switch can be mounted directly into the side of the fuse-
lage or internally, using piece of music wire as the means to acti-
vate the switch. We typically prefer an internally mounted switch
simply because it is cosmetically clean and keeps fuel and dust out
of the switch mechanism. To do this, we made a simple mounting
bracket from scrap 1/8" plywood that was made to fit inside the
fuselage. Our switch was then mounted onto the bracket with a
short length of .045" music wire from the switch lever to the outside
MOUNTING THE CABANE STRUTS:
❑
38) From your parts bag, locate the bag containing the four
factory painted aluminum cabane struts and mounting bolts.
Carefully note that these are provided in two different lengths, as
shown.
To achieve the proper incidence for the top wing it is important that
these cabane struts are mounted in place correctly.
The two
longer cabane struts are bolted into the rear slot positions in the
fuselage, using the provided M3 x 9mm PWA bolts. The two
shorter cabane struts are mounted into the front fuselage cabane
slots, using the two remaining bolts to secure them.
❑
39) With the cabane struts now mounted, the windshield -
removed earlier - is now reinstalled in front of the fuselage cockpit.
RADIO INSTALLATION:
❑
40) The airborne battery pack is the single heaviest component
of your radio system and this means that you can shift its final
location as needed to achieve the correct balance point (Center of
Gravity).). For reference, to achieve the correct C. G. location on
15
Lower End Of
Antenna Exit
Strain Relief
Antenna