GREAT PLANES Siren ARF Instruction Manual - Page 3
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instances the written instructions should be considered
as correct.
3. You must take time to build straight, true and strong.
4. You must use an R/C radio system that is in first-class
condition and a correctly sized engine and components
(fuel tank, wheels, etc.) throughout the building process.
5. You must correctly install all R/C and other components so
that the model operates correctly on the ground and in the air.
6. You must check the operation of the model before every
flight to insure that all equipment is operating and that the
model has remained structurally sound. Be sure to check
clevises or other connectors often and replace them if they
show any signs of wear or fatigue.
7. If you are not an experienced pilot or have not flown this
type of model before, we recommend that you get the
assistance of an experienced pilot in your R/C club for your
first flights. If you're not a member of a club, your local
hobby shop has information about clubs in your area whose
membership includes experienced pilots.
8. While this kit has been flight tested to exceed normal use, if
the plane will be used for extremely high-stress flying, such as
competition, or if a motor larger than one in the recommended
range is used, the modeler is responsible for taking steps to
reinforce the high-stress points and/or substituting hardware
more suitable for the increased stress.
9. WARNING: The fuselage included in this kit is made of
carbon fiber, the fibers of which may cause eye, skin and
respiratory tract irritation. Never blow into the fuselage to
remove dust, as the dust will blow back into your eyes.
Always wear safety goggles, a particle mask and rubber
gloves when grinding, drilling and sanding carbon fiber
parts. Vacuum the parts and the work area thoroughly after
working with carbon fiber parts.
We, as the kit manufacturer, provide you with a top
quality, thoroughly tested kit and instructions, but
ultimately the quality and flyability of your finished model
depends on how you build it; therefore, we cannot in any
way guarantee the performance of your completed
model, and no representations are expressed or implied
as to the performance or safety of your completed model.
Remember: Take your time and follow the instructions to
end up with a well-built model that is straight and true.
DECISIONS YOU MUST MAKE
Motor Recommendations
The Great Planes Siren ARF can be built either as a sport
electric sailplane or as an entry level hotliner. To fly the Siren
ARF as a sport sailplane you need a 600-size Great Planes
brushed motor with an 8-cell NiMH and an 8x4 folding
propeller. This setup delivers 20° climb out angles with a full-
throttle endurance of around 7 minutes. To fly the Siren ARF
as an entry level hotliner, you will need a Kontronik
480 motor with gearbox, and a 10-cell NiMH battery turning a
13x7 APC folding propeller. With this setup the Siren ARF is
capable of three to four vertical climb outs at high speed. The
Siren ARF climbs to altitude in about 10 seconds. This is a
powerful setup that allows the airplane to deliver its full
performance potential, but it also demands more attention
from the pilot as extreme speeds are easy to achieve. Great
Planes offers both power packages as options. You must
choose a power package based on the performance you
expect out of the airplane. The motor mount installed on the
Siren ARF will fit both power packages.
Great Planes Brushed Sport Package
T-601 Ferrite Motor (GPMG0706)
Great Planes 8x4 folding propeller (GPMQ1650)
7-Cell 2000 mAh NiMH (GPMP0351)
8-Cell 2000 mAh NiHH (GPMP0352)
Great Planes Electrifly
Brushless Power Package
Kontronik 480 Brushless set (KONG5020) (includes motor,
gearbox, and speed controller)
APC 13x7 Folding Propeller (APCQ4357)
Great Planes Folding Propeller Spinner (GPMQ1651)
10-Cell 2000 mAh NiMH (GPMP0353)
Using Lithium Batteries
In addition to the NiMH batteries specified above, Lithium
batteries can be used to power both power systems of the
Siren ARF. Using Lithium batteries will increase your flight
times substantially while decreasing the final weight of the
airplane slightly. the following are the recommended lithium
batteries for the Siren ARF.
Great Planes Brushed Sport Package
This power system requires two 7.4V 1500 mAh Li-Po
batteries wired in parallel for a 2S-2P configuration.
(2) Great Planes Lithium-Polymer 1500 mAh 7.4V 2-cell
pack (GPMP0830)
(2) W. S. Deans 2-Pin Ultra plug
(1) W. S. Deans Wet Noodle Flex 12-gauge red 2'/black 2'
Brushless Power Package
There are two options for this power package:
First Option: Two 11.1 V 1500 mAh Li-Po batteries wired in
parallel for a 3S-2P configuration. This configuration will
deliver slightly less performance than the 10-cell NiMH
pack, but the run time will be increased to 5-6 minutes.
(2) Great Planes Lithium-Polymer 1500 mAh 11.1V 3-cell
Pack (GPMP0831)
3
™
C-30 Speed Control (GPMM2030)
™
Brushless