Hangar 9 Alpha 69 User manual

Specifications
Wingspan: ............. 71.5 in (1816mm)
Length: ................... 54 in (1371mm)
Wing Area: ............ 965.2 sq in (62.27 sq dm)
Weight:.................... 7–8 lb (3.2–3.6 kg)
ASSEMBLY MANUAL
Engines: .................. .61 2-stroke (included)
Radio:...................... 4-channel w/4 servos
(included)
Featuring the Unique Evolution Trainer Power System
  
 
  
   
WE GET PEOPLE FLYING
TM
®

Table of Contents
2
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Covering Colors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Contents of Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Field Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Optional Field Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Additional Required Tools and Adhesives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Before Starting Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Using the Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Section 1: Assembly of the Wing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Section 2: Installation of the Main Landing Gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Section 3: Installing the Tail Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Section 4A: Installing the Wing (Rubber Band) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Section 4B: Installing the Wing (Bolt-On) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Section 5: Installing the Propeller and Spinner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Section 6: Center of Gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Section 7: Control Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Section 8: Preflight Checks at the Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Section 9: Starting the Evolution Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Section 10: Flying the Alpha Trainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Section 11: Engine Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Section 12: Evolution Trainer Power System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Glossary of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2003 Official AMANational Model Aircraft Safety Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Covering Colors
• True Red HANU866
• Deep Blue HANU873
• White HANU870
• Silver HANU881

3
Contents of Kit
Replacement parts:
A. Wing Set w/Alum. Tube HAN2601
B. Fuselage HAN2602
C. Tail Set HAN2603
D. Landing Gear Set HAN2604
E. Wing Tube HAN2605
F. 23/4" Wheels HAN305
G. 3" Wheels HAN306
H. Propeller EVO0610P
I. Spinner EVO0610S
Items Not Shown:
Engine Mount HAN90M
Pushrod Set HAN2607
Fuel Tank (assembled) HAN2606
Repair Information
In the misfortune of a crash or broken part, see your
local hobby dealer for replacement parts. Use the part
numbers listed to aid in the selection of the correct
replacement parts.
A
B
C
E
F
G
D
H
I

4
Warning
Additional Required Tools and Adhesives
Tools
• Adjustable wrench
• Drill
• Drill bit: 5/64", 3/32"
• Hobby Knife (XAC3126)
• Phillips screwdriver (small)
• Flat screwdriver
Adhesives (Optional)
• 30-Minute Epoxy (HAN8002)
• Thick CA (cyanoacrylate) Glue (PAAPT02)
• CA Remover/Debonder (PAAPT16)
• Masking Tape (MMM20901)
Other Required Items (Optional)
• Epoxy Brushes (DUB345)
• Felt-Tipped Pen (PAR10400)
• File
• Measuring device (e.g. ruler, tape measure)
• Mixing Sticks for Epoxy (DUB346)
• Paper towels
• Rubbing alcohol
• Wax paper
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 and engine.
Field Equipment Required
• Fuel
• Glow Plug Wrench (HAN2510)
• Glow Plug Igniter with Charger (HAN7101)
• Glow Plug (HAN3001/3006)
• Manual Fuel Pump (HAN118)
• #64 Rubber Bands (ARC64)
• Skypack Pilot Support Package (HAN001)
Optional Field Equipment
• 4-Way Wrench (DUB701)
• Field Box (HAN130/131/117)
• Cleaner & towels
• Extra Glow Plugs (HAN3001/3006)
• Blue Block After Run Oil (EVOX1000)
• Power Panel (HAN106)
• 12V 7Ah Sealed Battery (HAN102)
• PowerPro 12V Starter (HAN161)
• Start-Up Field Pack (HANSTART)

5
Before Starting Assembly
Using the Manual
Before beginning the assembly of the Arrow, remove each part from its bag for inspection. Closely inspect the
fuselage, wing panels, rudder, and stabilizer for damage. If you find any damaged or missing parts, contact the
place of purchase.
If you find any wrinkles in the covering, use a heat gun or covering iron to remove them. Use caution while
working around areas where the colors overlap to prevent separating the colors.
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 two boxes 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.
Warranty Information
Horizon Hobby, Inc. guarantees this kit to be free from defects in both material and workmanship at the date of
purchase. This warranty does not cover any parts damage by use or modification. In no case shall Horizon Hobby’s
liability exceed the original cost of the purchased kit. Further, Horizon Hobby reserves the right to change or modify
this warranty without notice.
In that Horizon Hobby has no control over the final assembly or material used for the final assembly, no liability
shall be assumed nor accepted for any damage of the final user-assembled product. By the act of using the product,
the user accepts all resulting liability.
Once assembly of the model has been started, you must contact Horizon Hobby, Inc. directly regarding any warranty
question that you have. Please do not contact your local hobby shop regarding warranty issues, even if that is where
you purchased it. This will enable Horizon to better answer your questions and service you in the event that you may
need any assistance.
If the buyer is not prepared to accept the liability associated with the use of this product, the buyer is advised to
return this kit immediately in new and unused condition to the place of purchase.
Horizon Hobby
4105 Fieldstone Road
Champaign, Illinois 61822
[phone]
www.horizonhobby.com
HAN100 – Heat Gun HAN101 – Covering Iron

6
Section 2: Installation of the Main Landing
Gear
Section 1: Assembly of the Wing

7
Section 3: Installing the
Tail Assembly
Assembly Diagram
Please carefully read through the
entire instruction manual before beginning
assembly of the Alpha .60 Trainer
Ready-To-Fly (RTF) kit.

8
Section 1: Assembly of the Wing
Carefully remove the contents of your Alpha Trainer
Ready-To-Fly kit. It is recommended that you charge
the transmitter and receiver batteries for 24 hours
prior to flying your model.
Step 1
Remove each wing panel from its protective plastic
bag. Remove the pieces of tape that hold the ailerons
in place for shipping. The hinges in the Alpha
Trainer have already been glued in place during
manufacturing. Check to make sure hinges are
secure by gently pulling on the wing and aileron,
trying to separate the ailerons from the wing. Be
careful not to damage the wing structure.
Step 2
Locate the aluminum wing tube and carefully slide
it into the opening in one wing panel. Use a twisting
motion while inserting the tube. A short metal pin is
located near the trailing edge of one wing panel.
This pin keys into the opposite wing panel and
keep the wing from rotating around the wing tube.
Carefully slide the other wing panel onto the wing
tube. Align the metal pin in one panel into the hole
of the opposite panel and press the two panels
tightly together.
Step 3
Locate the clear wing joiner tape and apply it to the
top and bottom of the wing along the joint. Start at
the top of the trailing edge and wrap it around the
front of the wing and to the bottom trailing edge.
Step 4
The aileron servo lead has been wrapped around the
linkage for shipment. Untie the servo lead to free up
the aileron linkage.
Note: The aileron servo lead has been labeled
with a piece of tape; do not remove this tape.
One of the aileron linkages has already been
connected to the aileron and secured with a small
piece of tubing (clevis keeper). This is done to
prevent the clevis from opening during flight.
Connect the other aileron linkage to the aileron and
snap the clevis in place. Slide the clevis keeper
over the clevis to secure the linkage to the aileron.
You have successfully assembled the wing of
your Alpha™ Trainer.
Step 3
Wrap supplied clear
tape around the center joint Step 2
Slide both wing panels
onto the metal tube
Step 1
Remove the shipping tape
Step 3
Attach the aileron clevis
Bottom view of wing

Section 2: Installation of the Main Landing Gear
9
Step 1
Locate the aluminum landing gear and two
8-32 x 3/4" screws. The wheels have already been
installed for you. On the bottom of the fuselage
you will find a two holes and blind nuts to accept
the screws. The landing gear will be positioned
over these holes and the screws used to secure the
landing gear to the fuselage.
Step 2
Position the landing gear over the holes. Slide one
8-32 x 3/4" screw through the corresponding hole
in the landing gear and into the blind nut. Repeat
the procedure for the remaining screw. Use a Phillips
screwdriver to tighten both of the screws.
Mount the landing gear using
two 8-32 x 3/4” screws

10
Section 3: Installing the Tail Assembly
Locate the horizontal stabilizer and vertical
stabilizer assemblies. The rudder and elevator
have been pre-hinged at the factory and the control
horns are also attached.
Remove the shipping tape holding the rudder and
elevator in place. Check both the rudder and elevator
for freedom of movement. Also check to make sure
the hinges have been glued securely.
Step 1
The vertical stabilizer has threaded rods in the bottom
that secure it to the horizontal stabilizer. Insert the
threaded rods through the predrilled holes in the
horizontal stabilizer. Secure them together using
two large washers and wing nuts. Place a drop of
threadlock on the threaded rods before tightening
the wing nuts.
Step 2
Slide the tail assembly into the slot in the rear of the
fuselage; making sure the rudder pushrod is on top of
the horizontal stabilizer. Use the two long screws and
two small washers to secure the tail assembly to the
fuselage. There is a hole in the bottom of the fuselage
to access the forward screw location. Place a drop of
threadlock on the screws before installing the screws.
Hint: Use a magnetic screwdriver when
installing the screws.
Threadlock
Threadlock
Wing Nut Large Washer
Attach the vertical stabilizer to
the horizontal stabilizer using
two washers and two wing nuts
Apply
threadlock
Apply
threadlock
Slide tail assembly into slot
at fuselage rear
Long Screw Small Washer

Section 3: Installing the Tail Assembly
11
Step 3
Connect the rudder and elevator pushrod clevises to
the preinstalled control horns. Install the clevises into
the hole furthest away from the control surface (see
illustration). Secure each clevis to the control horn by
snapping the clevis pin into the hole. Slide the clevis
keeper up onto the clevis to prevent the clevises from
accidentally opening in flight.
The rudder pushrod is
positioned above the
horizontal stabilizer
Clevis keeper
Attach clevis to
outside hole
Note: The wing can be attached to
the fuselage using either bolts or rubber
bands. Section 4B covers the installation
using wing bolts.
Step 1
Remove the covering from the holes in the fuselage
for the wing hold-down dowels using a sharp hobby
knife. Locate the two wing hold-down dowels and
using a twisting motion, carefully insert one into each
of the two holes located in the fuselage. The dowels
should be positioned so an equal amount sticks out
each side of the fuselage.
Step 2
Plug the aileron servo connector into the connector
marked "aileron" located in the fuselage. This will
connect the aileron servo in the wing to the aileron
channel of your receiver.
Step 3
Temporarily attach the wing to the fuselage by
stretching a rubber band from wing hold-down
dowels starting at the leading edge of the wing back
to the trailing edge of the wing. For now, use two
rubber bands to mount the wing in position.
Section 4A: Installing the Wing (Rubber Band)
Aileron
Charger

12
Section 4B: Installing the Wing (Bolt-On)
Note: The wing can be attached to the fuselage
using either bolts or rubber bands. Section
4A covers the attachment of the wing using
rubber bands.
Step 1
Use a sharp hobby knife to remove the covering in
the wing for the wing dowels. Mix 1/2 ounce of
30-minute epoxy and apply a small amount to
both the hole and dowel. Press the dowel into
the hole so 5/8" extends from the front edge
of the wing. Use a paper towel to clean up any
excess epoxy. Allow the epoxy to fully cure before
continuing to Step 2.
5/8"
Step 2
Remove the covering from the wing at the rear using
a hobby knife to access the holes for the wing bolts.
Use two 1/4-20 x 2" nylon bolts to secure the wing to
the fuselage as shown.
Step 3
Plug the aileron servo connector into the connector
marked "aileron" located in the fuselage. This will
connect the aileron servo in the wing to the aileron
channel of your receiver.
Step 4
Position the wing onto the fuselage. Slide the wing
forward so the dowels in the wing slide into the
adjacent holes in the fuselage.
Aileron
Charger

Section 5: Installing the Propeller and Spinner
13
Note: Due to the unique design of the Evolution
Trainer Power System and 3-bladed propeller,
it was necessary to remove the propeller for
shipping. Carefully follow these instructions
for installation of the propeller and spinner.
Step 1
Remove the prop nut and washer from the
Evolution engine, noting the position of the
washer and flywheel.
Step 2
Locate the spinner included with the Alpha™
Trainer and remove the self-tapping screws (3)
and back plate.
Step 3
With the flywheel in place, install the spinner back
plate onto the engine as shown.
Note: The flywheel is keyed into place onto
the engine’s crankshaft and should be tight
against the front engine bearing.
Step 4
Slide the propeller onto the engine with the
"E" molded on the propeller blades facing forward
as shown.

14
Section 5: Installing the Propeller and Spinner
Step 5
Install the prop washer and prop nut removed in
Step 1. Make sure to position the beveled edge of
the washer forward.
Step 6
Use an adjustable wrench to tighten the prop nut
while holding the propeller in place.
Warning: The propeller must be securely
tightened before attempting to run the
Evolution engine. Be sure to check the
propeller before each flying session.
Note: The propeller must be positioned to
allow the spinner cone to fit into the slots in
the back plate. Test fit the spinner cone before
attempting to install the self-tapping screws
of the spinner.
Step 7
Using a Phillips screwdriver, secure the spinner cone
in place with the self-tapping screws (3) provided.
Note on rubber bands: A good general
rule is using at least two rubber bands per
pound of airplane. An 8-pound plane will
use 16 rubber bands. Using more than the
recommended amount is fine, just don’t go
overboard.
When removing the rubber bands, place
them in a container with a small amount
of talcum powder. This will soak up some
of the fuel from the rubber bands, making
them last longer.

Section 6: Center of Gravity
15
The Alpha™ Trainer has been balanced at the factory.
If changes are made in battery location or a different
engine is installed, you will need to make sure the
balance of the aircraft is correct before attempting
to fly it. The balance point (center of gravity) of the
Alpha is 41/4" from the leading edge of the wing. If
you have to add weight to the nose or tail, use the
stick-on variety available at your local hobby shop.
Section 7: Control Checks
The correct servo directions are preadjusted, but it’s
a good idea to confirm the correct direction. After
charging the transmitter and receiver batteries per
the instruction included with the radio, turn on the
transmitter and airplane and check that the controls
are moving in the correct direction, as per the
illustrations below.
It is very important that you make sure the control
surfaces (rudder, elevator and ailerons) are at 0
degrees when the transmitter control sticks and trim
levers are centered. Turn on your transmitter and
receiver. Make sure the rudder, elevator and aileron
sticks are centered and the trim levers are centered.
Place a ruler against the control surfaces to see if
there is any deflection from the center (0 degrees).
Adjustments to the control surfaces can be made by
temporarily disconnecting the clevis from the horn
and threading the clevis in or out on the control rod.
Threading in causes the surface to move toward
the rod. Threading out causes the surface to move
away from the rod. Set the control surfaces, ailerons,
elevator and rudder to 0 degrees.
Reconnect the clevises to the outer hole of the control
horn of the rudder and elevator control horns. Make
sure that the clevis keepers are in place.
Elevator: Moving the
right stick down should
cause the elevator to
move upward. Pushing
the right stick up will
cause the elevator to
move down.
Aileron: Moving the
right stick to the right
should move the right
aileron up and the left
aileron down. Moving
the stick in the opposite
direction will give the
opposite result.
Rudder: Moving the left
stick to the right should
move the rudder to the
right. Moving the stick
to the left moves the
rudder to the left.
ELEVATOR
ELEVATOR
AILERON
AILERON
AILERON
RUDDER
RUDDER
Throttle: Look into the
carburetor. With the
throttle (left stick) in
the up position, the
carburetor should be
fully open. With the
throttle in the lower
position and trim lever
at the mid point, the
carburetor should be
1/16" open.
THROTTLE
1/16”
CARBURETOR
Full open
0°

16
Section 8: Preflight Checks at the Field
Important: Be sure to change both the
transmitter and receiver batteries following the
procedures described in the radio instruction
manual.
Before each flight, check the screws and nuts that
secure the metal plate holding the engine in place
on the engine mount. Also check the clevises of
each control surface for security and presence of a
clevis keeper.
Check the screws that hold the tail assembly in place,
as they can loosen during flight.
Perform a ground range check before each day’s
flying as follows:
• Do not extend the transmitter antenna. Turn the
transmitter on.
• Turn the model on.
• Slowly walk away from the model while moving
the control surfaces. The aircraft should function
properly at a distance of 75–100 feet.
• Make sure all trim levers on the transmitter are in
the proper position.
• Make sure all servos and switch harness plugs
are secure.
Section 9: Starting the Evolution Engine
Field Equipment needed
The following are included in the Hangar 9® Start-Up
Field Accessory Pack (HANSTART)
• Sturdy cardboard construction tote box
• Manual fuel pump
• Hangar 9 glow plugs (2)
• 4-way wrench
• Rechargeable glow driver with charger
• Start stick
Other Items Needed (not included in Start-Up
Field Accessory Pack)
• Fuel, 10 to 15% nitro content
(Cool Power or Powermaster recommended)
• Electric starter (optional)
Step 1
Fill the fuel tank with the proper fuel. We recommend
10% or 15% Nitro content such as Cool Power or
Powermaster fuel. Fill the tank by connecting the
fuel pump to the line connected to the remote needle
valve assembly. Disconnect the fuel line attached
to the pressure fitting of the muffler; your tank is
full when fuel begins to run out of the pressure line.
Reconnect the fuel lines to the needle valve
assembly and muffler.
Note: It is very important to reconnect the lines
to the correct place. The engine will not run
properly if they are improperly connected.

Section 10: Flying the Alpha Trainer
Section 9: Starting the Evolution Engine
17
Step 2
To prime your engine, first turn on your transmitter
and then your receiver. Move the throttle to full open
and place your finger over the carburetor opening.
Turn the propeller over by hand until you can see
fuel entering the fuel line. Move the throttle stick
full down to idle.
Caution: Always have a helper hold your plane
when starting the engine.
Step 3
Move the throttle to the low position and the throttle
trim lever to the middle position. Place the glow
driver on the glow plug and, using a start stick,
turn the propeller counterclockwise through the
compression stroke. You should feel a “bump”
against the start stick. When you feel the “bump,” flip
the propeller counter clockwise to start the engine.
Repeat the process if the engine does not start.
For first-time pilots, the thought of flying the Alpha™
Trainer through loops, rolls and perfect three-point
landings can be thrilling. Learning to fly, however,
takes time, patience, and most importantly, a good
instructor. If you’re a first time pilot, don’t try to
fly your model without an instructor. Seek an
experienced pilot for your first flight. Your local
hobby shop can put you in touch with an someone
in your area who can test fly your Alpha Trainer, and
then give you your first chance on the “sticks” with
very little risk of damage to the airplane. We cannot
overemphasize the importance of having a qualified
instructor to help you through your first flights.
The JR® Quattro radio system has a built-in trainer
system or “buddy box” option. The transmitter can
be used with any JR transmitter and a trainer cord
(JRPA130). Use of the “buddy box” for the first few
flights is highly recommended.
More experienced pilots will find the Alpha Trainer
to be a confidence-inspiring airplane. Its super
stable and slow-flight characteristics make pinpoint
landings easy. At full throttle, the Alpha Trainer
is more than capable of most sport aerobatics
maneuvers. The self-righting stability of the
model also makes it one of the easiest airplanes
you’ll ever fly.

18
Section 11: Engine Adjustments
• Fine-Tuning the High-Speed Needle
Start your engine and advance the throttle to full,
then pinch the red fuel line going to the engine. If the
engine dies immediately without an increase in rpm,
the setting is too lean. Adjust the high-speed needle
valve counterclockwise (out) 1/2 turn and repeat
the test. When the high-speed needle is adjusted
correctly, the engine should increase rpm slightly
and then quit. If the engine rpm increases more than
200–300 rpm and continues to run, the needle valve
setting is too rich. Adjust the needle valve clockwise
(in) 1/8th of a turn and repeat the test until the engine
responds correctly to the pinch test.
• Fine-Tuning the Low-Speed Needle
After fine-tuning the high-speed needle, you can
begin to test the low-speed needle. Start your
engine and go to full throttle for approximately 5–10
seconds then return to idle. Pinch the red fuel line
going to the engine. If the engine dies immediately
without an increase in rpm, the setting is too lean.
Adjust the needle valve counterclockwise (out)
1/8th of a turn and repeat the test. When the low-
speed needle is adjusted correctly, the engine
should increase rpm slightly and then quit. If the
engine rpm increases more than 200–300 rpm and
continues to run, the needle valve setting is too rich.
Adjust the needle valve clockwise (in) 1/16th of a
turn and repeat the test until the engine responds
correctly to the pinch test.
Warning: Make all adjustments to the Evolution
engine’s low-speed needle valve with the
engine stopped.
Our technicians have preset the needle valves of the
Evolution engine. Your engine should run properly
at these preset needle settings. On occasion,
depending on your location, you may find it
necessary to adjust the high-speed and low-speed
needle valves to optimize the performance of your
engine. The needle valves have limiters to allow
small adjustments to the engine.
The low-speed needle valve limiter allows 1/4 turn
of the needle valve, turning clockwise (in) will lean
the mixture while turning counterclockwise (out) will
richen the mixture to the low-speed or idle setting
of the engine. The high-speed needle valve limiter
allows one full turn of the needle valve. As with the
low-speed adjustment, turning the high-speed needle
valve clockwise (in) will lean the mixture, while
turning counterclockwise (out) will richen the mixture
of the high-speed setting of the engine.
High-Speed Needle
Adjustment
Model engines run on a mixture of fuel and air. The
high-speed and low-speed needle valves control
the ratio of fuel to air that the engine receives. If
you find that small adjustments are needed, have
an experienced modeler help you to fine-tune your
engine. Do not attempt to move the needles past the
preset stops. Low-Speed Needle
Adjustment

19
Section 12: Evolution Trainer Power System
The Evolution Trainer Power System has been
specifically designed with the first time pilot in mind.
The engine and special 3-blade propeller have been
designed to give your Alpha Trainer the optimum
performance for training new RC pilots. The engine
is designed for easy starting and reliable idle to give
you confidence in your equipment, allowing you to
concentrate on developing your piloting skills.
Benefits of the Evolution Trainer Power System
• Lower noise level than standard 10 x 6 prop; baffle
in muffler lowers noise even more
• Smaller speed envelope—the 3-bladed prop
design has a lower top speed, so overspeeding the
model is less likely; this gives the beginner more
reaction time while still providing lots of power to
climb out of bad situations
• Pre-set needle settings—ready-to-run out of the
box
• Needle valve limiters make it impossible for
beginners to adjust the needle valves incorrectly to
the point that the engine will not run
• User friendly—easy to start from first the try with
super reliable idle and no break-in needed
Warning: Before operating your engine, read
and follow all safety points. A rotating
propeller can cause serious personal injury.
Follow these instructions carefully! If this is the
first time you have run a model airplane engine, we
recommend that you seek the help of an experienced
modeler. Your local hobby shop can put you in
contact with the flying club in your area.
• Only use a "Start Stick" or electric starter to start
the engine.
• Only make adjustments to the carburetor from
behind the engine.
• Keep spectators at least 20 feet away and out of the
path of a rotating propeller.
• Wear safety glasses and hand protection when
operating model engines. Do not permit any
objects to touch a turning propeller. Remain clear
of the propeller plane of rotation.
• To stop the engine, cut off the fuel and air supply
by moving the throttle stick and trim lever down to
close the carburetor. Do not stop the propeller with
your hand or other object.
• Inspect the propeller after each flight; discard any
propeller that has nicks, scratches or any other
visible defect. Do not repair, alter or in any way
modify a propeller. Replacement propellers are
available through your local hobby retailer.
20 feet

20
Glossary of Terms
• Ailerons: Each side of this airplane has a hinged
control surface (aileron), located on the trailing
edge of the wing. Move the aileron stick on the
transmitter left, the left aileron moves up and the
right aileron moves down. Moving the left aileron
up causes more drag and less lift, causing the left
wing to drop down. When the right aileron moves
down, more lift is created, causing the right wing
to rise. This interaction causes the airplane to turn
or roll to the left. Perform the opposite actions, and
the airplane will roll to the right.
• Carburetor: By adjusting the needle valve in the
carburetor, you control the engine’s lean/rich fuel
mixture and set the engine for correct operation.
• Charger: This is the device used to charge/recharge
batteries. If Ni-Cd batteries are provided with the
radio, a charger is usually provided as well.
• Clevis: The clevis connects the wire end of the
pushrod to the control horn of the control surface.
• Clunk: Located inside the fuel tank, a clunk is
weighted and ensures that the intake line has a
steady supply of fuel regardless of the attitude of
the airplane.
• Control Horn: This arm connects the control
surface to the clevis and pushrod.
• Control Surfaces: The moveable parts of the wing
and tail that cause the aircraft to roll (aileron), pitch
(elevator) or yaw (rudder).
• Dead Stick: When the airplane is in flight
gliding without the engine running, it is called
“dead stick.”
• Dihedral: The degree of angle (V-shaped bend) at
which the wings intersect the fuselage is called
dihedral. More dihedral gives an airplane more
aerodynamic stability. Some sailplanes and trainer
planes with large dihedral dispense with ailerons
and use only the rudder to control the roll and yaw.
• Electric Starter: This is the small motor commonly
used to start the airplane’s engine.
• Elevator: The hinged control surface on the back
of the stabilizer that moves to control the airplane’s
pitch axis. Pulling the transmitter’s control stick
toward the bottom of the transmitter moves the
elevator upward, and the airplane begins to
climb. Push the control stick forward, and the
airplane begins to dive.
• Expanded Scale Voltmeter (ESV): This device is
used to check the voltage of the battery pack.
• Flight Box: The box in which you store and
transport your flying equipment.
• Flight Pack or Airborne Pack: These
interchangeable terms describe the radio
equipment that is installed on the airplane.
• Fuel Overflow Line (Vent): This line connects to
the muffler and pressures the fuel tank when the
engine is running. It also functions as an overflow
line when the fuel tank is full.
• Fuel Pickup Line: This line connects the fuel tank
to the carburetor.
• Fuselage: The main body of an airplane.
• Glow Plug Clip/Battery: A 1.2-volt battery with a
clip that is connected to your engine’s glow plug
and is used to start the engine. You remove it once
the engine is running smoothly.
• High Wing: The term describes an airplane that has
its wing mounted on the top of the fuselage.
• Hinge: Flexible pieces used to connect the control
surface to the flying surface. All hinges must be
glued properly and securely to prevent the airplane
from crashing. (This has already been done for you
on the Alpha™ Trainer.)
• Horizontal Stabilizer: The horizontal flying surface
of the tail gives the airplane stability while in flight.
• Leading Edge: The front of a flying surface.
• Main Landing Gear: The wheel and gear assembly
the airplane uses to land, is attached to the bottom
of the fuselage.