Great Planes Piper J-3 ElectriCub Park Flyer ARF - GPMA1153 - Manual (Page 4)

Note: Depending on battery choice, you may have to
remove the cross brace in the battery compartment to allow
the battery pack to fit. This does not adversely affect the
performance of the Mini Cub ARF.
The best type of charger to use is a peak charger, because
it charges the batteries until they are fully charged, then
automatically switches to a trickle charge mode. The Great
Planes ElectriFly Peak Charger (GPMM3000) is suitable for
nickel-metal hydride batteries, NiCds and transmitter
battery packs.
If you have another type of charger that is not a peak charger,
you will have to calculate the length of time it takes to charge
the batteries yourself, then turn the charger off when the
batteries are fully charged. Overcharging the batteries can
damage them. Before you can calculate the time it takes to
charge a battery pack, you first must know the charge rate you
are going to use. Nickel-metal hydrides must be charged at a
rate of no more than 1/10 of their capacity. For the 650 mAh
batteries recommended for the Mini Cub ARF this would be a
charge rate of approximately 65 mAh. Divide the capacity of
the battery pack by the charge rate to calculate the charge
time. A discharged 650 mAh battery pack charged at 0.65
mAh will take 10 hours to charge.
IMPORTANT: Monitor the temperature of the battery
frequently. If the battery becomes warm, disconnect it from
the charger.
A Great Planes ElectriFly DC Peak 400 Charger
(GPMM3001) is also suitable for charging the battery packs
used in the Mini Cub ARF.
Note: The period required to charge the battery in the
example is for a fully discharged battery. If the battery you
are going to charge is not discharged (and you are not
using a peak-charger), connect it to the motor on your
model. Run the motor until the auto cutoff on the ESC stops
the motor.
In addition to common household tools and hobby tools, this
is the “short list” of the most important items required to
build the Mini Cub ARF.
Great Planes Pro ™ CA and Epoxy
glue are recommended.
❏
Hobby knife (HCAR0105)
❏
#11 blades (HCAR0211)
❏
Small T-pins (HCAR5100)
❏
Electric drill and 1/16" [1.6mm] drill bit
❏
Small Phillips and flat blade screwdrivers
❏
Pliers with wire cutter (HCAR0630)
❏
1/2 oz. Thin Pro CA (GPMR6001)
❏
6-Minute Epoxy (GPMR6045)
❏
30-Minute Epoxy (GPMR6047)
❏
R/C-56 Canopy glue (JOZR5007)
❏
Non-elastic monofilament or Kevlar ® fishing line (for
stab alignment)
❏
Builder’s Triangle Set (HCAR0480) (for fin alignment)
❏
Thread Locking Compound
Here is a list of optional tools mentioned in the manual that
will help you build the Mini Cub ARF.
❏
Great Planes CG Machine ™ (GPMR2400)
❏
Straightedge with scale (HCAR0475)
❏
Top Flite ® MonoKote ® sealing iron (TOPR2100)
❏
Top Flite MonoKote trim seal iron (TOPR2200)
❏
Masking tape (TOPR8018)
❏
CA accelerator (GPMR6034)
❏
Mixing sticks (GPMR8055)
❏
Denatured alcohol (for epoxy clean up)
❏
Curved-tip canopy scissors (HCAR0667)
❏
Clear packing tape
• When you see the term test fit in the instructions, it
means that you should first position the part on the
assembly without using any glue, then slightly modify or
custom fit the part as necessary for the best fit.
• Whenever the term glue is written you should rely upon
your experience to decide what type of glue to use. When a
specific type of adhesive works best for that step, the
instructions will make a recommendation.
• Whenever just epoxy is specified you may use either
30-minute (or 45-minute) epoxy or 6-minute epoxy. When
30-minute epoxy is specified it is highly recommended that
you use only 30-minute (or 45-minute) epoxy, because you
will need the working time and/or the additional strength.
• Photos and sketches are placed before the step they
refer to. Frequently you can study photos in following steps
to get another view of the same parts.
• The Mini Cub ARF is factory-covered with Top Flite
MonoKote film. Should repairs ever be required, MonoKote
film can be patched with additional MonoKote film purchased
separately. MonoKote film is packaged in six-foot rolls, but
IMPORTANT BUILDING NOTES
Optional Supplies & Tools
Adhesives & Building Supplies
ADDITIONAL ITEMS REQUIRED
Chargers
4