This is what
you’ll find when
Model type: Precision Aerobatics ARF
Skill level: Intermediate builder; intermediate pilot
Wingspan: 71. 5 inches
Wing area: 836 square inches
Length: 73 inches
Weight: 9. 75 to 10. 75 pounds
Power system: 1.20-size equivalent motor; 80-amp ESC;
6S LiPo (electric) or 1. 20 cu. in. two-stroke
glow engine or 1. 55 cu. in. four-stroke
Radio: Four- to six-channel radio
Construction: Foam, balsa, and plywood
Street price: $499.98
Power system: Rimfire 1. 20 brushless motor;
ElectriFly Silver Series 80-amp ESC
Battery: Two Thunder Power 3S 5,000 mAh
Propeller: APC 17 x 8 or Xoar 17 x 8
Radio system: Futaba T8J transmitter; Futaba R2008SB
S9151 servo (rudder)
Receiver battery: Hobbico LiFeSource 6.6-volt 1, 100 mAh 10C
Ready-to-fly weight: 10.175 pounds
Flight duration: 6-8 minutes
• Airplane flies well.
• Attractive MonoKote covering.
• The fit and the finish are excellent.
• Arming plug included for safety.
• No provision made for hot air exhaust with the electric
• Center gear leg bolt heads too large.
The aircraft is supplied with
quality hardware and only one
substitution was made for
I jumped ahead in the illustrated instruction booklet. Having
the landing gear mounted makes moving the fuselage easier.
The wheel axles are long and need to be cut to fit into the
wheel pants. The wheel pants are mounted using two 4-40
screws for each pant. Although the instructions call for two
washers between wheel and axle hub, I needed three to center
the wheel in the pant opening and prevent rubbing.
The landing gear legs plug into the fuselage and are secured
using three 8-32 socket-head cap screws per leg. Gear leg
cutouts did not require trimming and everything lined up on
the first try.
The instructions call for the inner gear bolts to be used
without lock washers. I found even without a washer, the head
of the cap screw extended roughly 1/16 inch
above the battery tray surface. Concerned
about clearance, I replaced the center cap
screws with pan-head screws from my spare-parts bin.
Mounting the Rimfire 1. 20 motor begins
with opening up firewall cooling knockouts.
The firewall comes marked for mounting
the powerplant of your choice. I used a
Great Planes Brushless Motor Mount, but
an optional wood bulkhead/inner mount is
available at extra cost.
The included light plywood ESC mount was assembled
using Great Planes CA glue then bolted directly to the motor
mount. The ESC mount comes predrilled for the ElectriFly
Silver Series 80-amp ESC. A short length of fuel tubing was
placed over the #4 mounting screws protruding through the
mount plate to protect the motor wires.
Two cowl-mounting options are provided: a cowl bulkhead
with hidden screws or the external screw method that I used
on the review model. I struggle with mounting cowls, but I did
a better job of lining up the nose ring than aligning the paint
Servo mounting is straightforward. The fully adjustable
rear rail of the rudder servo mount makes any length servo an
option. The adjustable rail slides in a channel and is glued in
place with CA.
The metal aileron and elevator pushrods were cut to the
specified length and soldered. After making a mess soldering
couplers onto the elevator pushrods, I used JB Weld epoxy for
the aileron pushrods.
The two stabilizer-mounted elevator servos require long
extensions that are wrapped around the internal 72 MHz
antenna tube running down the middle of the aft fuselage. Do
not use this method if the tube is used for an antenna.
Hardware and instructions are provided for the pull-pull
rudder linkage. The rudder and control horn were preinstalled.
Exit guide tubes make threading the nylon-coated cable into
the fuselage easy. I used electrical crimping pliers to
crimp the copper furls.
Bad things can happen
to connections during snaps
and spins, making wire
The connectors for every
wire extension were secured
with a piece of heat-shrink
44 Model Aviation JANUARY 2015 www.ModelAviation.com