the ailerons are already pre-installed, the first step of the
assembly is to mount the servo and linkage in each wing half.
I use a JR Sport MN48
Mini servo which provides 48oz/in torque. I also used a JR (JRPA098)
12" HD servo extension. Note that the Cub has a pre-placed
string to help run the servo extension to the bottom side hole
near the chord. This will drop into the fuselage when the wing
the linkage hardware and keepers are included and the aileron
has pre-placed pin holes to drill slightly larger for the control
horn screws. The recommended aileron swing is +- 10mm from center.
wing halves are jointed together by two aluminum tubes. The smaller
one is pre-mounted in one side and the larger one slides into
pre-made channels. A finished plywood stiffener is used on the
top side to strengthen the trailing edge hold-down area when screwed
into the fuselage. Two pre-installed wooden dowels line up the
wing with the fuselage and keep it from lifting.
instructions call for gluing to two wing halves together including
the aluminum tubes but I am not convinced this is necessary so
I plan to keep them removable for now.
fiberglass cowl installed easily using the supplied screws and
rubber hole protectors. I opened the front hole in the cowl using
a Dremel tool to allow the base of the motor adapter to protrude
stabilizers mounted easy using 5-minute epoxy. Both pieces had
the covering pre-trimmed and only the horizontal stab needed to
be aligned properly. The vertical stab fit in place like a puzzle
piece and I found no alignment issues.
main gear assembly is installed into channels along the fuselage
bottom. You simply need to cut away the covering to expose the
channels. Four straps are screwed in place to secure the gear
assembly. I discovered that the strut braces could be secured
using the same hole as one meant for the strap if you slightly
angle the brace. The location for the brace did not match the
manual assembly diagram so I could not find it initially. A rubber
grommet provides bounce absorption for the main gear assembly
wheels are secured with a collar on each side and the other one
is hidden by the screw-on hub. The pant is secured by three brass
braces, screws, washers, and nuts on each side. I used thread
locker on the collar grub screws and pant screws. The overall
look of the landing gear was very clean and scale.
installed the elevator and rudder linkages using the supplied
parts and threaded rods. Rubber keepers were also supplied to
secure the clevis. The servo tray is pre-assembled so you only
need to glue it in place with epoxy. I used JR DS-821
Digital Sport Servos for both control surfaces. Note the empty
spot where the throttle servo would normal go on the glow-powered
Air Flow System:
motor can be easily cooled by air flow if you first widen the
opening in the cowl and then create an exit path underneath by
cutting a vent. If you drill some holes in the bottom half of
the firewall the air can enter the fuselage to cool the ESC and
battery pack, as well as enhance the flow past the motor.
easy way for the air to exit the fuselage is to remove the covering
around the last section near the tail. A little red paint on the
bare balsa helps to hide the opening.
of screwing the pilot mount in place, I held it with Velcro so
it can easily be removed when taking the battery out. The painted
pilot and mounting platform pieces are all included.
pilot figure stays in place for any aerobatic maneuver made by
the Cub and makes it look more scale in flight.