Horizon Hobby E-flite PLATINUM DHC-2 Beaver ARF User manual

Specifications
Wingspan: 68 in (1735mm)
Length: 43 in (1090mm)
Wing Area: 565 sq in (36.4 sq dm)
Weight w/ Battery: 4.9–6.2 lb (2.2–2.8 kg)
Weight w/o Battery: 4–4.25 oz (1.8–1.9 kg)
DHC-2 Beaver ARF
Assembly Manual

2 E-flite DHC-2 Beaver ARF Assembly Manual
Introduction
The full-scale DHC-2 Beaver was originally intended for flight in
areas of remote wilderness. Designed to be particularly durable
and powerful, the Beaver could easily be fitted with wheels, skis
or floats depending on where it was needed. The Beaver had
short takeoff and landing capabilities, making it perfect to reach
areas that could normally only be accessed via boat or foot.
Originally designed in 1948, the Beaver quickly made itself
useful flying to frozen areas of Canada and Alaska. Despite
the fact that production ceased in 1967, it is still used today for
island-hopping tourists and fishermen.
E-flite’s DHC-2 Beaver 25e is part of the Platinum Series,
meaning the level of scale detail is unmatched. Just a few of its
amazing details include corrugated flight surfaces, concealed
tail linkages and a scale dummy motor. Also included with the
E-flite Beaver are float mounts built into the fuselage and the
wire struts required to bolt the floats onto. For additional fun,
the pilot can quickly change the landing gear to the optional
float set (EFLA500) for water takeoffs and landings.
For anyone looking for an authentic-looking replica of a durable
utility plane with amazing scale detail that is easy to assemble,
the Beaver is the sport utility vehicle of aircraft.
Platinum Series Statement
Our Platinum Series delivers superior, enhanced features and
meticulous attention to detail. The symbol on this kit is your
assurance of excellence and one more way that E-flite brings you
the most advanced electric flight experience.
Table of Contents
Specifications...................................................................... 1
Introduction......................................................................... 2
Platinum Series Statement .................................................... 2
Using the Manual................................................................ 2
Contents of Kit/Parts Layout................................................. 3
Required Radio Equipment................................................... 4
Important Information About Motor Selection........................ 4
Outrunner Setup Power 25 .................................................. 4
Outrunner Setup Power 32 (recommended when using floats) 4
Optional Accessories........................................................... 5
Required Tools and Adhesives.............................................. 5
Notes Regarding Servos and ESC ........................................ 6
Note on Lithium Polymer Batteries ........................................ 6
Warning............................................................................. 6
Warranty Information.......................................................... 6
Safety, Precautions, and Warnings ....................................... 8
Landing Gear Installation..................................................... 9
Motor and Cowling Installation .......................................... 10
Aileron and Flap Servo Installation..................................... 15
Joining the Wing Panels .................................................... 23
Rudder and Elevator Installation ......................................... 25
Radio Installation............................................................... 31
Optional Float Installation .................................................. 38
Widows and Optional Cockpit Installation .......................... 40
Control Throws.................................................................. 44
Range Test Your Radio ....................................................... 45
Center of Gravity .............................................................. 45
Preflight ............................................................................ 46
Flying Your DHC-2 Beaver ARF .......................................... 46
2008 Official AMA National Model Aircraft Safety Code ... 47

3E-flite DHC-2 Beaver ARF Assembly Manual
Using the Manual
This manual is divided into sections to help make assembly
easier to understand, and to provide breaks between each
major section. In addition, check boxes have been placed next
to each step to keep track of each step completed. Steps with
a single circle () are performed once, while steps with two
circles () indicate that the step will require repeating, such
as for a right or left wing panel, two servos, etc.
Remember to take your time and follow the directions.
Contents of Kit/Parts Layout
Large Parts:
EFL4526 Wing Set
EFL4527 Fuselage
EFL4528 Tail Set
Small parts:
EFL4529 Cowling
EFL4530 Window Set
EFL4531 Landing Gear
EFL4532 Battery Hatch
EFL4533 Pushrod Set
EFL4534 Tailwheel Set
EFL4535 Wing Struts
EFL4536 Float Mount
EFL4538 Tailcone
EFL4539 Dummy Motor

4 E-flite DHC-2 Beaver ARF Assembly Manual
Required Radio Equipment
You will need a minimum 6-channel transmitter (for proper
mixing and dual rate capabilities), crystals, receiver, and six mini
servos. You can choose to purchase a complete radio system.
If you are using an existing transmitter, just purchase the other
required equipment separately. We recommend the crystal-free,
interference-free Spektrum™DX6i 2.4GHz DSM®6-channel
system. If using your own transmitter, we recommend the JR
SPORT™MN48 Mini servos.
If you own the Spektrum DX6i radio, just add the AR6200
DSM2™6-channel receiver and six of our JR SPORT MN48 Mini
servos.
Complete Radio System
SPM6600 DX6i DSM 6CH system
Or Purchase Separately
JRPR720UL UltraLite 7-Channel ScanSelect
FM Receiver (72MHz)
JRP790UL UltraLite 7-Channel ScanSelect
PCM Receiver (72MHz)
Or
SPMAR6200 AR6200 DSM2 6-Channel Receiver
UltraLite (for DX6i on DX7)
Or
SPM6070 AR7000 DSM2 7CH Rx (for DX6i or DX7)
And
JSP20040 MN48 Mini Servo (6)
JSP98100 3-inch Servo Extension (2)
JSP98020 6-inch Y-Harness (2)
JRPA096 9-inch Servo Extension
JSP98030 12-inch Servo Extension (2)
Important Information About
Motor Selection
We recommend the E-flite®Power 25 Brushless Outrunner,
870Kv (EFLM4025A) or the E-flite Power 32 Brushless
Outrunner, 770Kv (EFLM4032A) if you plan on flying with the
optional floats.
Outrunner Setup Power 25
EFLM4025A Power 25 BL Outrunner, 870Kv
EFLA1060 60-Amp Brushless ESC
EFLB32003S 3200mAh 3-Cell 11.1V Li-Po
APC12080E 12 x 8 Electric Prop
Outrunner Setup Power 32
(Recommended when using floats)
EFLM4032A Power 32 BL Outrunner, 770Kv
EFLA1060 60-Amp Brushless ESC
THP33004SX 3300mAh 4-Cell 14.8V Li-Po
APC13065E 13 x 6.5E Electric Prop
Spektrum is used with permission of
Bachmann Industries, Inc.

5E-flite DHC-2 Beaver ARF Assembly Manual
Optional Accessories
EFLA110 Power Meter
EFL4537 Cockpit Kit
EFLA151 Pilot Bust
EFLA500 25-Size Fiberglass Floats
EFLAEC303 EC3 Device & Battery Connector,
Male/Female
EFLC3005 Celectra 1- to 3-Cell Li-Po Charger
EFLC505 Intelligent 1- to 5-Cell Balancing Charger
Required Tools and Adhesives
Tools & Equipment
EFLA250 Park Flyer Tool Assortment, 5-piece
Or Purchase Separately
EFLA257 Screwdriver, #1 and #2 Phillips
(or included with EFLA250)
EFLA251 Hex Wrench: 3/32-inch (or included
with EFLA250)
6-minute epoxy
Canopy glue
Covering iron
Drill
Drill bit: 1/16-inch (1.5mm), 5/64-inch (2mm), 1/8-inch (3mm)
Felt-tipped pen
Flat blade screwdriver
Hobby knife (#11 blade)
Low-tack tape
Medium CA
Pencil
Phillips screwdriver: #1, #2
Pin drill
Rotary tool w/sanding drum
Ruler
Sandpaper
Side cutters
Thin CA
Threadlock
Epoxy brush
Paper towels
Epoxy mixing cups
Mixing sticks
Square
Silicone adhesive
String
Hobby scissors
Ball Driver: 3/32-inch, 7/64-inch
Rubbing alcohol
30-minute epoxy

6 E-flite DHC-2 Beaver ARF Assembly Manual
Notes Regarding Servos and ESC
WARNING: Use of servos other than those we recommend may
overload the BEC of the recommended Electronic Speed Control
(ESC). We suggest the use of only the servos we recommend
when utilizing the recommended ESC’s BEC, or the use of a
separate BEC (like the UBEC) or receiver battery pack when
using other servos.
Note on Lithium Polymer Batteries
Lithium Polymer batteries are significantly more
volatile than alkaline or Ni-Cd/Ni-MH batteries used
in RC applications. All manufacturer’s instructions
and warnings must be followed closely. Mishandling
of Li-Po batteries can result in fire. Always follow the
manufacturer’s instructions when disposing of Lithium
Polymer batteries.
Warning
An RC aircraft is not a toy! If misused, it can cause serious
bodily harm and damage to property. Fly only in open areas,
preferably at AMA (Academy of Model Aeronautics) approved
flying sites, following all instructions included with your radio.
Keep loose items that can get entangled in the propeller away
from the prop, including loose clothing, or other objects such as
pencils and screwdrivers. Especially keep your hands away from
the propeller.
Warranty Information
Warranty Period
Horizon Hobby, Inc., (Horizon) warranties that the Products purchased
(the “Product”) will be free from defects in materials and workmanship
at the date of purchase by the Purchaser.
Limited Warranty
(a) This warranty is limited to the original Purchaser ("Purchaser") and
is not transferable. REPAIR OR REPLACEMENT AS PROVIDED UNDER
THIS WARRANTY IS THE EXCLUSIVE REMEDY OF THE PURCHASER.
This warranty covers only those Products purchased from an
authorized Horizon dealer. Third party transactions are not covered
by this warranty. Proof of purchase is required for warranty claims.
Further, Horizon reserves the right to change or modify this warranty
without notice and disclaims all other warranties, express or implied.
(b) Limitations- HORIZON MAKES NO WARRANTY OR
REPRESENTATION, EXPRESS OR IMPLIED, ABOUT NON-
INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE OF THE PRODUCT. THE PURCHASER
ACKNOWLEDGES THAT THEY ALONE HAVE DETERMINED THAT
THE PRODUCT WILL SUITABLY MEET THE REQUIREMENTS OF THE
PURCHASER’S INTENDED USE.
(c) Purchaser Remedy- Horizon's sole obligation hereunder
shall be that Horizon will, at its option, (i) repair or (ii) replace, any
Product determined by Horizon to be defective. In the event of a
defect, these are the Purchaser's exclusive remedies. Horizon reserves
the right to inspect any and all equipment involved in a warranty
claim. Repair or replacement decisions are at the sole discretion of
Horizon. This warranty does not cover cosmetic damage or damage
due to acts of God, accident, misuse, abuse, negligence, commercial
use, or modification of or to any part of the Product. This warranty
does not cover damage due to improper installation, operation,
maintenance, or attempted repair by anyone other than Horizon.
Return of any goods by Purchaser must be approved in writing by
Horizon before shipment.

7E-flite DHC-2 Beaver ARF Assembly Manual
Damage Limits
HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT OR
CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION
OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE
PRODUCT, WHETHER SUCH CLAIM IS BASED IN CONTRACT,
WARRANTY, NEGLIGENCE, OR STRICT LIABILITY. Further, in no
event shall the liability of Horizon exceed the individual price of the
Product on which liability is asserted. As Horizon has no control over
use, setup, final assembly, modification or misuse, no liability shall be
assumed nor accepted for any resulting damage or injury. By the act
of use, setup or assembly, the user accepts all resulting liability.
If you as the Purchaser or user 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.
Law: These Terms are governed by Illinois law (without regard to
conflict of law principals).
Safety Precautions
This is a sophisticated hobby Product and not a toy. It must be
operated with caution and common sense and requires some basic
mechanical ability. Failure to operate this Product in a safe and
responsible manner could result in injury or damage to the Product or
other property. This Product is not intended for use by children without
direct adult supervision. The Product manual contains instructions for
safety, operation and maintenance. It is essential to read and follow
all the instructions and warnings in the manual, prior to assembly,
setup or use, in order to operate correctly and avoid damage or
injury.
Questions,Assistance, and Repairs
Your local hobby store and/or place of purchase cannot provide
warranty support or repair. Once assembly, setup or use of the
Product has been started, you must contact Horizon directly. This will
enable Horizon to better answer your questions and service you in the
event that you may need any assistance. For questions or assistance,
please direct your email to [e-mail], or call
877.504.0233 toll free to speak to a service technician.
Inspection or Repairs
If this Product needs to be inspected or repaired, please call for a
Return Merchandise Authorization (RMA). Pack the Product securely
using a shipping carton. Please note that original boxes may be
included, but are not designed to withstand the rigors of shipping
without additional protection. Ship via a carrier that provides tracking
and insurance for lost or damaged parcels, as Horizon is not
responsible for merchandise until it arrives and is accepted
at our facility. A Service Repair Request is available at www.
horizonhobby.com on the “Support” tab. If you do not have internet
access, please include a letter with your complete name, street
address, email address and phone number where you can be reached
during business days, your RMA number, a list of the included items,
method of payment for any non-warranty expenses and a brief
summary of the problem. Your original sales receipt must also be
included for warranty consideration. Be sure your name, address, and
RMA number are clearly written on the outside of the shipping carton.
Warranty Inspection and Repairs
To receive warranty service, you must include your original
sales receipt verifying the proof-of-purchase date. Provided warranty
conditions have been met, your Product will be repaired or replaced
free of charge. Repair or replacement decisions are at the sole
discretion of Horizon Hobby.

8 E-flite DHC-2 Beaver ARF Assembly Manual
Non-Warranty Repairs
Should your repair not be covered by warranty the repair
will be completed and payment will be required without
notification or estimate of the expense unless the expense
exceeds 50% of the retail purchase cost. By submitting the
item for repair you are agreeing to payment of the repair without
notification. Repair estimates are available upon request. You must
include this request with your repair. Non-warranty repair estimates
will be billed a minimum of ½ hour of labor. In addition you will be
billed for return freight. Please advise us of your preferred method
of payment. Horizon accepts money orders and cashiers checks, as
well as Visa, MasterCard, American Express, and Discover cards.
If you choose to pay by credit card, please include your credit card
number and expiration date. Any repair left unpaid or unclaimed
after 90 days will be considered abandoned and will be disposed of
accordingly. Please note: non-warranty repair is only available
on electronics and model engines.
Electronics and engines requiring inspection or repair should be
shipped to the following address:
Horizon Service Center
4105 Fieldstone Road
Champaign, Illinois 61822
All other Products requiring warranty inspection or repair should be
shipped to the following address:
Horizon Product Support
4105 Fieldstone Road
Champaign, Illinois 61822
Please call 877-504-0233 with any questions or concerns
regarding this product or warranty.
Safety, Precautions, and Warnings
As the user of this product, you are solely responsible for
operating it in a manner that does not endanger yourself
and others or result in damage to the product or the property
of others.
Carefully follow the directions and warnings for this and any
optional support equipment (chargers, rechargeable battery
packs, etc.) that you use.
This model is controlled by a radio signal that is subject to
interference from many sources outside your control. This
interference can cause momentary loss of control so it is
necessary to always keep a safe distance in all directions
around your model, as this margin will help to avoid collisions
or injury.
• Always operate your model in an open area away from cars,
traffic, or people.
• Avoid operating your model in the street where injury or
damage can occur.
• Never operate the model out into the street or populated
areas for any reason.
• Never operate your model with low transmitter batteries.
• Carefully follow the directions and warnings for this and any
optional support equipment (chargers, rechargeable battery
packs, etc.) that you use.
• Keep all chemicals, small parts and anything electrical out of
the reach of children.
• Moisture causes damage to electronics. Avoid water exposure
to all equipment not specifically designed and protected for
this purpose.

9E-flite DHC-2 Beaver ARF Assembly Manual
Landing Gear Installation
Required Parts
Fuselage Landing gear (right and left)
6-32 x 3/8-inch socket head screw (4)
#6 washer (4)
Required Tools and Adhesives
Ball driver: 7/64-inch Threadlock
Note: If you will be installing floats on your DHC-2
Beaver, you can skip to the next section to install
the motor and battery.
1. Check the fit of the landing gear in the fuselage. Note
that there is a right and left landing gear assembly.
2. Secure the left half of the landing gear using two
6-32 x 3/8-inch socket head screws and two
#6 washers. Use a 7/64-inch ball driver to tighten
the screws.
Note: Make sure to use threadlock on all screws so they
do not vibrate loose.

10 E-flite DHC-2 Beaver ARF Assembly Manual
3. Secure the right half of the landing gear
using two 6-32 x 3/8-inch socket head screws and
two #6 washers.
Motor and Cowling Installation
Required Parts
Fuselage Motor w/mount and accessories
#4 washer (8) Cowling
Hook and loop tape (2) Motor battery
Electronic speed control Propeller
Velcro straps 9-inch servo extension
Spinner w/backplate and screws
4-40 x 3/8-inch socket head screw (4)
Power 32 specific:
4-40 x 1-inch socket head screw (4)
Aluminum motor spacer (4)
Power 25 specific:
4-40 x 1/2-inch socket head screw (4)
Required Tools and Adhesives
Ball driver: 3/32-inch Threadlock
Phillips screwdriver: #1, #2 6-minute epoxy
Note
Standard wheel version: We flew the prototype Beavers
on Power 25's and 3S Li-Po systems with plenty of power
for basic maneuvers and flight performance.
Float version: We flew the prototype Beavers on Power
32's and 4S Li-Po systems when using floats due to the
higher weight of the model with floats installed.
Mounting hardware is included for mounting either motor
combination in your Beaver.

11E-flite DHC-2 Beaver ARF Assembly Manual
1. Attach the X-Mount to the motor using the screws
provided with the motor and a #2 Phillips screwdriver.
Make sure to use threadlock on all four screws so they
do not vibrate loose.
2a. Attach the Power 32 motor to the firewall using four
4-40 x 1-inch socket head screws, four #4 washers, four
aluminum motor spacers. Tighten the screws using a
3/32-inch ball driver. Make sure to use threadlock on the
four screws to prevent them from vibrating loose.
2b. Attach the Power 25 motor to the firewall using four
4-40 x 1/2-inch socket head screws and four #4
washers. Tighten the screws using a 3/32-inch ball
driver. Make sure to use threadlock on the four screws to
prevent them from vibrating loose.
Note: The blind nuts in the fuselage for mounting the
motor can be positioned for a variety of motors. Position
them so they are aligned with your particular motor
before mounting it to the firewall.

12 E-flite DHC-2 Beaver ARF Assembly Manual
3. Use hook and loop tape to mount the speed control to
the front of the battery box as shown. You will need to
attach a 9-inch extension onto the ESC plug to route it to
the receiver.
4. Plug the leads together between the motor and speed
control. Secure the wires so they will not interfere with the
operation of the motor.
5. Use a hobby knife and rotary tool to remove the area
in the center of the dummy radial engine. Use a hobby
knife to remove the area between each of the cylinders to
allow cooling air to pass through the cowling and over
the motor. Use 6-minute epoxy to glue the dummy radial
engine inside the cowling. Use the following colors to
paint the dummy radial engine.
Note: We used the following colors when painting
the engine:
Rocker Shafts – Aluminum
Engine Cylinders – Black
Plug Wires – Yellow
Center Crankcase – Lt. Gray

13E-flite DHC-2 Beaver ARF Assembly Manual
6. Attach the cowl to the fuselage using four 4-40 x
3/8-inch socket head screws and four #4 washers.
Note the direction of the cowl as shown in the photo.
Use a 3/32-inch ball driver to tighten the screws that
secure the cowling. Use threadlock to ensure the screws
do not come loose during flight.
Important Information About Your Propeller
It is also very important to check to be sure the
propeller is balanced before installing onto the shaft. An
unbalanced propeller may strip the gears or cause poor
flight characteristics.
Note: If it is necessary to enlarge the hole in the
propeller, make sure to check the balance of the
propeller afterwards.
Note: Some DHC-2 beaver's utilized a spinner and
some did not. We have included a spinner for you if you
so wish to use one. On the model we have represented,
we did not use a spinner; we used only a prop nut.
7. Insert the propeller adapter into the spinner backplate.
It may be necessary to enlarge to hole in the backplate to
accept the adapter.
8. Slide the adapter onto the motor shaft, then slide the
propeller onto the adapter. Use the adapter nut to secure
the propeller and spinner backplate to the motor shaft.

14 E-flite DHC-2 Beaver ARF Assembly Manual
9. Secure the spinner cone to the backplate with the
screws provided with the spinner. Use a #1 Phillips
screwdriver to tighten the two screws.
10. Carefully remove the hatch from the bottom of the
fuselage. It is held at the rear with two magnets. To open
the hatch, insert your thumb and index finger into the
cups and pinch towards the middle of the hatch. Then lift
towards one side to release one magnet and then pull up
and away from the model to release the second model.
Note: If you are not flying with floats you may wish to
cut the plastic cups out of the hatch and make two holes
for your fingers.
If you intend to fly on floats, then you may wish to leave
the cups in place.

15E-flite DHC-2 Beaver ARF Assembly Manual
11. Install the battery in the fuselage using the two velcro
straps. The battery can be moved forward or rearward
to correct for the Center of Gravity if necessary. You may
also wish to use some hook and loop tape on the tray to
secure the battery from sliding fore or aft.
12. You may elect to cut a hole for exit air in the aft
area of your fuselage. You will notice we have designed
the structure so that an air exit hole may be located in
the following position. Using the batteries listed in this
manual, we found no need for an air exit hole in the
fuselage.

16 E-flite DHC-2 Beaver ARF Assembly Manual
Aileron and Flap Servo Installation
Required Parts
Wing panel (right and left) Aileron servo cover (right and left)
Servo mounting blocks (8) Nylon clevis (4)
Clevis retainer (4) Pushrod connector (4)
Flap servo cover (2) 2 1/2-inch (58mm) pushrod (2)
23/16-inch (56mm) pushrod (2)
Servo extension, 3-inch (76mm) (2)
Servo extension, 12-inch (305mm) (2)
#2 x 3/8-inch sheet metal screw (16)
Required Tools and Adhesives
Thin CA Pin drill
Drill Side cutters
Phillips screwdriver: #1 Pencil
String Ruler
Low-tack tape 6-minute epoxy
Drill bit: 1/16-inch (1.5mm), 5/64-inch (2mm)
 1. Position the aileron servo on the servo cover so
the arm is centered lengthwise in the cutout. The arm
will align with the edge of the servo cover as well. Use a
pencil to mark the position of the servo on the cover.
 2. Use 6-minute epoxy to glue the servo mounting
block to the servo cover as shown. Allow the epoxy to
fully cure before proceeding.

17E-flite DHC-2 Beaver ARF Assembly Manual
 3. Position the servo between the servo mounting
block. Use a pencil to mark the locations for the servo
mounting screws on the blocks. The servo should not
touch the cover to prevent it from absorbing vibrations
from the airframe. You may have to notch the servo block
to allow access for the servo wire.
 4. Use a drill and 1/16-inch (1.5mm) drill bit to drill
the holes for the servo mounting screws.
 5. Apply a few drops of thin CA to each of the
holes drilled in the previous step to harden the
surrounding wood.

18 E-flite DHC-2 Beaver ARF Assembly Manual
 6. Use a #1 Phillips screwdriver to install the screws
provided with the servos to attach the servo to the
servo mounting blocks.
 7. Remove any of the unnecessary arms from the
servo horn using side cutters. Enlarge the outer hole
of the servo arm with a pin drill and 5/64-inch
(2mm) drill bit.
 8. Secure a 9-inch (228mm) servo extension to the
aileron servo. Use string or a commercially available
connector to keep them from unplugging inside the
wing accidentally.

19E-flite DHC-2 Beaver ARF Assembly Manual
 9. Tie the string to the servo extension and pull it to the
opening for the flap servo at this time.
 10. Secure the aileron servo cover to the wing
using four #2 x 3/8-inch sheet metal screws and a
#1 Phillips screwdriver.
 11. Slide the bend of the 2 3/16-inch (56mm) pushrod into
the hole of the aileron servo. Secure the pushrod using
the pushrod connector.

20 E-flite DHC-2 Beaver ARF Assembly Manual
 12. Slide a clevis retainer onto a nylon clevis. With the
aileron servo centered using the radio, thread the clevis
onto the pushrod. Connect the clevis to the aileron control
horn. Adjust the length of the pushrod by threading the
clevis in or out until the aileron is centered.
13. Repeat Steps 1 through 12 for the remaining
aileron servo.
14. Prepare the flap servos for installation by removing
any unnecessary arms from the servo horns as shown.
You will also need to clean up the cuts to prevent any
portion of the removed arm from rubbing against the
servo cover when the servos are installed. Install any
grommets and brass eyelets at this time as well. The
servos will have the arms installed to match each other
as shown in the photo.
Note: The arms are shown in the center position
(which will be the mid flap position) if you are using
three-position flaps. Make sure when using proportional
flaps that the control has been centered before installing
the servo horns.