assembly starts with the aileron servo bays. The ailerons were attached
with Zap thin CA on the hinges after first removing the short string
pieces used to keep the hinges in place during shipment. The thin CA
soaks into the fiber hinges and then into the balsa slots for added
strength so remember not to use any CA kicker accelerator on this step.
used E-flite S-75 Sub-micro servos and the "03" series of plastic servo
mounts. All the linkage hardware was supplied including the keepers.
The kit comes with three different sets of servos mounts to handle most
servo sizes. The numbers are marked on the plastic servo mounts for
that strings are included inside the wing to pull the servo leads from
the bay to the center. Tiny 1.7mm x 8mm screws were provided to mount
the servo trays.
wing halves are aligned and supported by a metal tube along the CG and
a wooden dowel near the trailing edge. A second string is provided on
one side to route a 72MHz receiver antenna wire inside the wing, if
needed. I glued the two halves together with 5-minute epoxy.
vertical fins have an innovative technique for installation. A Nylon
lock nut is already installed in the fin so it simply screws into place
from the bottom side of the wing. This makes them removable, if needed,
for easier storage or repair.
the 70mm Ducted Fan Propulsion Unit (PL6800010)
and 28/31/3600 outrunner motor (KM0283110)
was straightforward and well documented in the manual. The rotor is
secured to the outrunner motor by three M2x5mm screws and the outrunner
motor is held to the DF unit by four M3x6 screws. The front
spinner/ring assembly and tail cone were glued in place with medium CA.
used a Castle Creations Thunderbird 36 ESC which required no
programming. The ESC can handle 36 amps continuous current draw on a
3-cell LiPo pack. It was a perfect low-cost fit for this application.
DF unit was first tested for proper spin direction and then mounted
into the fuselage using the supplied screws and locknuts. I used
several tywraps to keep the wires held in place and a Spectrum AR6100
receiver. Both the receiver and ESC were attached to the fuselage side
with servo tape.
Battery and CG
WingJet is designed to use a slim 3-cell 2AH flight battery like the
ThunderPower 3s 2100mAh pack. It is held in place with a Velcro strip
on the bottom and a supplied Velcro strap around the pack. The WingJet
EP balanced perfectly at 70mm (2.75") behind the leading edge where the
wing meets the fuselage.
Field Stand / Launching Dolly
field stand simply pressed together. There is a front and back side
that has different size openings for the model to sit properly. Since
it was still winter outside when we tested the WingJet, I didn't get a
chance to use it as a launching pad on a hard surface. I think this
accessory is a very novel idea any way you use it.