4
Twin Otter ARF Assembly Manual
Introduction
Hangar 9’s latest introduction, the Twin Otter is a
scale model of the UV-18 ‘Twin Otter’, the military
version of the DeHavilland DHC-6. The trim scheme
is based on the three UV-18B planes used by the US
Air Force Academy cadet parachuting program which
carry a pilot, copilot and up to 17 jumpers. There are
only three owned by the Air Force. Although this is a
multi-engine model, the high-wing design and Clark Y
airfoil improve low-speed handling and provide stable
flight characteristics making this a great first-time twin
for intermediate to advanced pilots. The Twin Otter
ARF also features an electric power option which adds
to the reliability. It also features fiberglass cowlings
and fairings which make it very durable and easy to
repair. The aircraft also includes fixed gear and large
landing flaps to provide easy and fun landings without
the addition of complicated landing gear necessary.
Important Warranty Information
Please read our Warranty and Liability Limitations
section on page 45 before assembling this product. If
you as the purchaser are not prepared to accept the
liability associated with the use of this Product, you are
advised to return this Product immediately in new and
unused condition to the place of purchase.
Recommended Setup–2-Stroke Glow
● Evolution® .36NT with muffler (EVOE0520) (2)
● Evolution propeller 11x6 (EVO11060)
(2)
● Fuel dot filler (HAN115)
(2)
Recommended Setup–Electric Power
● E-flite® Power 25 (EFLM4025A) (2)
● E-flite 40-Amp Pro Switch-Mode BEC Brushless
ESC (EFLA1040) (2)
● E-flite 3200mAh 3S 11.1V 30 Li-Po
(EFLB32003S30) (2)
● APC Propeller 12x8E (APC12080E)
Radio Equipment Requirements -
7-Channel Receiver
The following items are required when installing the
7-Channel AR7000 receiver (SPM6070) in your aircraft:
Spektrum A6000 Digital Servo (6) SPMSA6000
JR SPORT MC35 Micro Servo (4) JSP20030
(Note: Two less micro servos required for EP version)
9-inch Servo Extension (7) JRPA097
36-inch Servo Extension (2) JRPA103
Y-Harness (3) JRPA135
Receiver Battery, 6-volt, 2300mAh JRPB5006
JR Chargeswitch JRPA004
Ailerons: A6000 Servo (2)
● 9-inch Extension (connected to servos) (2)
● Y-harness (connected to receiver)
Flaps: A6000 Servo (2)
● 9-inch Extension (connected to receiver) (2)
Elevator: MC35 Micro Servo (2)
● 36-inch Extension (plugged into receiver) (2)
Rudder: A6000 Servo
● Y-harness (connected to receiver and
nosewheel steering servo)
Nosewheel Steering: A6000 Servo
● 9-inch Extension (connected to servo)
Throttles: MC35 Micro Servo (2)
● Y-harness (connected to receiver)
● 9-inch extension (connected to servo)
(Also required for ESC connection)
Transmitter Requirements
The Twin Otter requires a minimum of a 5-channel radio
to operate all the functions of your aircraft. We suggest
the following radio systems available through Horizon
Hobby or your local hobby distributor.
Spektrum DX7
SPM2710
JR X9303 2.4GHz
JRP2915
Required Tools and Equipment
Drill motor
Pin vise
Low-tack tape
Needle-nose pliers
Ruler
Sidecutters
File
Felt-tipped pen
Pencil
Coarse grit sandpaper
Tapered reamer
Hobby knife w/ #11 blade
Dental floss
Manila card stock
Alcohol
Paper towels
Scissors
Double-sided adhesive tape
Mixing sticks
Mixing cups
Small cable ties
T-pins
Toothpicks
String
Pliers
Pencil
Round file
Z-bend pliers
Phillips screwdriver: #1, #2
Rotary tool with cutoff wheel and sanding drum
Hex wrench: 3/32, 1/8, 7/64-inch, 1.5mm, 2.5mm
Open-end wrench: 5/16-inch, 10, 12, 13mm
Drill bit:
3/64, 5/64, 3/32, 5/32, 9/64,
11/64, 13/64-inch
Required Adhesives
Thin CA
(PAAPT08)
Medium CA
(PAAPT02)
30-minute epoxy
(PAAPT39)
Threadlock
(PAAPT42)
Canopy glue
(PAAPT56)
UltraCote Covering Colors
Golden Yellow
(HANU889)
White
(HANU870)
Deep Blue
(HANU873)
Field Equipment Required
● Fuel (15% recommended)
● Long Reach Glow Plug Wrench (HAN2510)
● Metered Glow Driver with Ni-Cd & Charger (HAN7101)
● 2-Cycle Sport Plug (EVOGP1)
● Manual Fuel Pump (HAN118)