assembly begins with a few quick glues, one for the main wing
and another for the stabilizers. Both sections are keyed for easy
alignment, so before you know, you have a jet!
elevator linkage is pre-installed so you simply connect it to
the control horn and secure it with the keeper.
FASST Receiver & Canopy:
positioned my R617FS
FASST receiver on top of the folded servo wires and tucked it
neatly into the compartment next to the elevator servo. I test
fit a 5oz ThunderPower 3-cell 2100mAh pack just in front of the
receiver for a perfect balance. The ESC went in up front where
I can open some air holes for cooling, if needed.
that a second canopy comes with the L-39 for actual flight. According
to the manual, the decorated canopy with the pilots is just for
display. We later discovered that it works just fine in flight.
Great Planes ElectriFly 11.1V 1250mAh 20C LiPo pack weighs only
3.8oz and properly balances the L-39 when placed as far forward
in the nose as possible. This means that a smaller capacity pack
may be too light to properly balance the L-39. The slightly thinner
pack allows the ESC to fit along the side. My plan was to test
several packs to compare balance and the effects on performance.
that I inverted the receiver and held it in place (along with
all the extra wires) using a few toothpicks.
included display stand glues together with either epoxy or white
glue. It can be used hold the model with all its armaments and
second cockpit with the pilots when not flying.
finishing the L-39, I was impressed with all the magnetically-held
armaments, wing tips, and alternate canopy for display. Further,
the model really looked nice sitting on the included stand.
measured the flying model (without armaments) to be 13.8oz without
battery. The power levels of my two test batteries were similar
due to the added weight. It will be interesting to see if the
additional ounce makes a noticeable difference in flight. The
ElectriFly 3s 1250mAh 20C pack weighed 3.8 ounces and provided
110w at 10amps for 100w/lb. The ThunderPower 3s 2100mAh 15C pack
weighed 5 ounces and provided 122w at 11amps for 104w/lb.