Alignment
of the wing and tail surfaces should be checked over
periodically. Look down the fuselage stick with the plane facing
directly at your eyes - the leading edge of the wing will be approxi-
mately parallel to the tail (horizontal stabilizer) and the rudder (verti-
cal stabilizer) will be perpendicular to the tail and wing. If needed,
you can twist the balsa airframe to straighten the airframe out and get
the alignment right. You can actually bend the balsa airframe quite a
bit without breaking it - just start slow and go by what you feel in
your hands and you’ll be able to get your plane true after a crash or
after some quick repairs.
Propeller
is attached to the gearbox by a friction fit over the middle
of the larger gear of the gearbox. We are currently shipping the But-
terfly without gluing the propeller to the gearbox - it is your choice
whether to glue it on or not. The propeller and battery may become
detached from the airplane if you crash the airplane. This is OK, you
can re-attach it very easily. If it is glued, the propeller can act as a
good shock absorber in a crash.
Attaching the propeller
to the Butterfly is done by holding the
motor and gearbox with one hand and snapping on the propeller with
it’s white plastic adapter onto the middle of the large gear as shown in
Fig 6.
If you wish, you may apply medium viscosity CA (cyanoacry-
late) glue to the mating surface of the prop adapter - either way is
acceptable. If you glue it on, be careful not to get it on the metal rivet
axle of the gearbox - glue on the edge only - you definitely do not
want to glue the axle of the gearbox - just the edge of the prop
adapter.
G
ETTING
R
EADY
F
OR
F
LIGHT
Attaching the battery
to the Butterfly receiver is done in very much
the same manner as for charging. Just bring the cell close the the
magnets of the Butterfly receiver and “click”, it is attached in 1 sec-
ond flat Always have your transmitter turned ON first before attaching
the cell to the Butterfly.
Multi-Frequency Operation
This 900Mhz R/C System (868Mhz in EU), can be configured for use
on one of 3 radio frequencies “channels”. You select your channel
when you switch on your transmitter. The position of the Left joystick
at startup controls what channel you will use. When you startup the
Transmitter, you can hold the Left stick to the Left, leave it in the mid-
dle (default), or hold it to the Right, to configure operation on Chan-
nels 1, 2 and 3 respectively. Default is Channel 2 (left stick is in the
middle position). (The European frequencies are designated as num-
bers 4, 5 and 6 respectively, and are accessed in exactly the same
way) The American version of the HFX900 transmitter is capable of
transmitting on CH 1, 2 and 3 ONLY. The HFX868 transmitter is
capable of transmitting on CH 4, 5 and 6 ONLY.
(See Fig. 7)
When selecting a Channel on startup, you can hold the Left joystick in
a position for about 2 seconds and let it spring back to center when
you are ready to transmit. Channel 2 is the default channel because
the Left joystick is a self centering joystick, so this channel is always
selected by default if you switch on the transmitter without holding
the Left joystick in any particular position. If you are flying alone, you
will probably be transmitting on channel 2 (CH 2) most of the time.
The receiver will look for the lowest channel number first and will
lock-on (sync) to the transmitter that is broadcasting on the lowest
channel number. It also will compare received signal strength, but for
practical purposes, the lowest channel number is the most important
factor for the receiver.
4
CHANNEL 1 (CH 4 Europe)
CHANNEL 2 DEFAULT (CH 5 Europe)
CHANNEL 3 (CH 6 Europe)
NEGATIVE EXPONENTIAL MIXING
NORMAL MIXING
FLIGHT SIM MODE (NON XMIT)
V-TAIL MIXING
Fig. 7
- Configure Transmitter functions by holding stick positions
while switching transmitter ON
Apply Glue Here
Fig. 6
.
Glue the Prop adapter if desired. Apply CA to the edge of
the prop adapter only.
