E-FLITE Jenny JN-4 Slow Flyer User manual

Specifications
Wingspan: 32-inch (810mm)
Length: 26-inch (660mm)
Wing Area: 304 sq in (19.6 sq dm)
Weight wbattery: 7.5–8 oz (210–225 g)
Radio: 3-channels with 2 sub-micro servos
Jenny JN-4 Slow Flyer ARF
Assembly Manual

2 E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
Introduction
The Curtiss JN-4 “Jenny” first entered service during WWI as
a primary trainer for the fledgling U.S. Army Air Corps.
After the war, surplus Jenny’s found fame with enterprising
barnstormers who crisscrossed the countryside performing
air shows and giving awe-struck passengers their first taste of
flight. E-flite®captures the magic of this golden era in the
history of flight with this superb Jenny replica. In addition to
its outstanding scale detail, E-flite has given this Jenny excellent
slow flight characteristics that make it perfect for indoor flight.
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.
Table of Contents
Specifications.........................................................................1
Introduction............................................................................2
Using the Manual...................................................................2
Contents of Kit/Parts Layout....................................................3
Required Radio Equipment......................................................3
Motor Setup...........................................................................4
Optional Accessories..............................................................4
Note on Lithium Polymer Batteries ...........................................4
Required Tools and Adhesives.................................................4
Warning................................................................................4
Warranty Period ....................................................................4
Limited Warranty ...................................................................5
Damage Limits .......................................................................5
Safety Precautions ..................................................................5
Questions, Assistance, and Repairs .........................................6
Inspection or Repairs ..............................................................6
Warranty Inspection and Repairs ............................................6
Non-Warranty Repairs ...........................................................6
Safety, Precautions, and Warnings ..........................................7
Motor Installation ...................................................................7
Rudder and Elevator Installation ............................................10
Radio Installation..................................................................12
Wing Installation..................................................................15
Landing Gear Installation......................................................18
Wing Rigging Installation......................................................19
Control Throws.....................................................................21
Center of Gravity .................................................................22
Range Test Your Radio ..........................................................22
Preflight ...............................................................................23
Flying the Jenny JN-4 Slow Flyer...........................................23
2007 Official AMA National Model Aircraft Safety Code ......24

3E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
Contents of Kit/Parts Layout
Large Replacement Parts
EFL1901 Wing (Top and Bottom)
EFL1902 Fuselage
EFL1903 Cowling
EFL1904 Tail Set
EFL1905 Main Landing Gear w/Wheels
EFLM1960 Carbon Fiber Tube, 6-inch (152mm),
8mm OD, 6mm ID: Park 250
Small Replacement Parts
EFLA213 E-flite/JR/Horizon Decals
Required Radio Equipment
You will need a minimum 4-channel transmitter, crystals, micro
receiver, and two sub-micro servos. You can choose to purchase
a complete radio system that includes all of these items or, if
you are using an existing transmitter, just purchase the other
required equipment separately. We recommend the crystal-free,
interference-free Spektrum™DX6 2.4GHz DSM®6-channel
system.
Complete Radio System
SPM2460 DX6 DSM 6CH Park Flyer
Alternate Radio System
SPM2710 DX7 DSM2 7CH System with AR6100 Microlite 6-
Channel Receiver
Or Purchase Separately
JSP30610 6-Channel UltraLite Rx w/o Crystal, Positive Shift
JR/AIR (72MHz)
JSP30615 6-Channel UltraLite Rx w/o Crystal, Negative Shift
Fut/HRC (72MHz)
JRPXFR** FM Receiver Crystal (JR only, not AR6000)
Or
SPM6000 AR6000 DSM 6-Channel Park Flyer Receiver
SPM6100 AR6100 DSM2 Microlite 6-Channel Receiver (must
be used with the DX7)
And
EFLRS60 6.0g Super Sub-Micro S60 Servo (2)

4 E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
Motor Setup
EFLM1130 Park 250 Outrunner, 2200Kv
EFLA1010 10A Brushless ESC
THP4802SJPL 480mAh 2-Cell 7.4V Li-Po, JST
GWSEP6050B Electric Propeller, 6x5 Slow-Flyer
EFLC3005 Celectra 1- to 3-cell Li-Po Charger
Optional Accessories
EFLA110 Power Meter
HAN172 Hangar 9 Digital Servo and
Rx Current Meter
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.
Required Tools and Adhesives
Tools & Equipment
EFLA250 Park Flyer Tool Assortment, 5-piece
Or Purchase Separately
EFLA257 Screwdriver, #0 Phillips (or included
with EFLA250)
Hobby knife
Felt-tipped pen
Square
Sandpaper
Adhesives
EFLA208 Foam CA 1oz/Activator 2oz Pack
RTV silicone
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 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.

5E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
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.
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.

6 E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
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.
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.

7E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
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.

8 E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
Motor Installation
Required Parts
• Fuselage • Receiver
• Park 250 Brushless motor • Electronic speed control (ESC)
• 11/2-inch (38mm) motor tube
Required Tools and Adhesives
• Phillips screwdriver • RTV silicone
• Double-sided tape • Foam-safe CA
• Sandpaper
1. Locate the 11/2-inch (38mm) motor tube. Follow the
instructions to glue (using RTV silicone) the motor to the
motor tube. Be careful not to get glue inside the motor
bearing.
2. Lightly sand the motor tube once the adhesive used to
glue the motor to the motor tube has fully cured.
3. Remove the two screws holding the cowl to the
fuselage and slide the cowl away from the fuselage.

9E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
4. Slide the motor assembly into the fuselage.
5. Slide the cowl back in position and attach it to the
fuselage. Attach the propeller to the motor following the
instructions provided with the motor.
6. Position the motor so is does not rub against the cowl.
Apply a few drops of foam-safe CA to the intersection of
the fuselage and motor tube.
7. Once the CA has cured, remove the propeller and
cowl. Apply foam-safe CA to the tube at the front of the
motor box.

10 E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
8. Plug the leads from the motor to the speed
control. Attach the speed control using double-sided
tape as shown.
9. Use double-sided tape to secure the receiver
inside the fuselage. Position the antenna wires
according to your radio manual. Never shorten the
receiver antenna wire, as this will greatly reduce the
range of your radio system.
10. Turn on the transmitter and bring the throttle trim
and stick to the low throttle position. Plug the battery into
the speed control and check the operation of the motor.
It should rotate counterclockwise when viewed from the
front of the aircraft. Use the instructions provided with
your ESC to make corrections to the direction of rotation
of the motor if necessary.

11E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
Rudder and Elevator Installation
Required Parts
• Rudder/Fin • Elevator/Stabilizer
• Micro control horn (2) • Micro control horn backplate (2)
Required Tools and Adhesives
• Square • Foam-safe CA
• Sandpaper
1. Position the rudder/fin tab into the slot in the
stabilizer/elevator. The yellow side of the stabilizer/
elevator faces the rudder/fin. Use a square and foam-
safe CA to glue the two items together, making sure the
rudder/fin is square to the stabilizer/elevator.
2. Slide a micro control horn into the slot in the elevator
from the bottom.
3. Slide the micro control horn backplate onto the control
horn from the opposite side of the elevator as the horn.
Apply a few drops of foam-safe CA onto the backplate to
secure it to the horn.

12 E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
4. Repeat Steps 2 and 3 to install the rudder
control horn.
Note: The rudder horn is opposite the elevator horn.
5. Position the assemble onto the fuselage. Check the
alignment as shown in the drawing. The rudder must
be parallel to the cabane struts. If not, lightly sand the
fuselage where the elevator rests and check the alignment
again. Once the alignment is correct, use foam-safe CA
to glue the assembly to the fuselage.
Rudder parallel to cabanes

13E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
Radio Installation
Required Parts
• Assembled fuselage Sub-micro servo (2)
• Micro pushrod connector (2) • 2mm x 4mm machine screw (2)
• Micro pushrod connector backplate (2)
Required Tools and Adhesives
• Hobby knife • Phillips screwdriver
1. Use a hobby knife to enlarge the outer hole in
the servo arm. Slide the micro pushrod connector into
the hole.
2. Secure the micro pushrod connector using a micro
pushrod connector backplate.
3. Mount the elevator servo in the fuselage using the
screws provided with the servo.
4. Slide the elevator pushrod wire through the center hole
in the control horn. Place a small bend in the pushrod
wire to apply light tension to keep the pushrod wire from
popping out of the horn.

14 E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
5. Check to make sure the elevator and stabilizer
are parallel.
6. Slide the pushrod wire through the connector. With the
elevator centered, thread a 2mm x 4mm machine screw
in the connector and tighten it to secure the pushrod wire.
7. Repeat Steps 1 through 6 to install the rudder servo
and linkage.

15E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
8. Reinstall the cowl and propeller. If the motor rubs on
the cowl, enlarge the holes for the screws that secure the
cowl so it can be repositioned enough so the motor does
not rub the cowl.
9. Use hook and loop tape to secure the battery
inside the cowl. The battery can be moved forward or
backward to adjust the Center of Gravity.
Note: We have found the model to balance out when
using a Thunder Power 480 2-cell battery with the
equipment listed in this manual. Using a 730 2-cell
battery will move the CG forward just a small amount
and will not affect the flight characteristics.

16 E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
Wing Installation
Required Parts
• Wing (top and bottom) • Outer strut (2)
• Inner strut (front) (2) • Inner strut (rear) (2)
• 2mm x 4mm sheet metal screw (8)
Required Tools and Adhesives
• Phillips screwdriver • Foam-safe CA
• Hobby knife • Felt-tipped pen
1. Position the bottom wing on the fuselage. Line the
holes in the wing up with the holes in the cross supports
in the fuselage. Use four 2mm x 4mm sheet metal screws
to attach the bottom wing to the fuselage. Do not over-
tighten the screws and damage the wing.
2. Slide the outer struts through the bottom wing. Note
the direction of the strut. The rear has an angle, while the
front is straight.
3. Use a hobby knife to make two small holes in the
mounting points of the cabane struts. Make the hole in
the rear mounting pads at this time.

17E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
4. Use a felt-tipped pen to mark the holes made in the
previous step. This will help in sighting the holes through
the wing.
5. Attach the rear of the top wing using two 2mm x
4mm sheet metal screws. Mark the locations for the front
screws through the wing on the mounting pads. The
cabane struts may require some adjustments to line up
with the holes in the wing.
6. Repeat the procedure from Steps 3 and 4 to make the
holes on the mounting pads at the front of the cabane
struts. Attach the wing using a total of four 2mm x 4mm
sheet metal screws.
Note: The alignment of the wings is very important for
smooth, predictable flight. Take your time during the next
few steps to ensure you do not build a warp into the
wing platform at any time.

18 E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
7. Apply foam-safe CA to the strut where it will come
in contact with the bottom wing. Push the strut tight
against the wing.
8. Apply foam-safe CA to the ends of the struts where
they come in contact with the top wing. Slide the struts
into position and hold the strut while the CA cures.
9. Locate the inner struts. Select a front and rear strut.
The rear strut has a greater angle than the front as shown
in the photo below.
10. Position the inner struts between the top and bottom
wing. Use foam-safe CA to glue the struts to the wings.
11. Repeat Steps 9 and 10 to install the remaining
inner struts.

19E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
Landing Gear Installation
Required Parts
• Airframe • Landing gear
• Wheel (2) • Wheel retainer (2)
Required Tools and Adhesives
• Foam-safe CA
1. Locate the landing gear. Position the gear with the
main axle toward the front of the plane.
2. Press the front of the gear into the opening in the
fuselage.
3. Press the rear of the gear into the slot in the wing and
into the fuselage.

20 E-flite Jenny JN-4 Slow Flyer ARF Assembly Manual
4. Slide a wheel onto the axle. Use a wheel retainer to
secure the wheel.
Hint: Use medium foam-safe CA on the retainer if it
is not snug on the axle. Use care not to glue the wheel
to the axle.
Wing Rigging Installation
Required Parts
• Airframe • Rigging thread
Required Tools and Adhesives
• Foam-safe CA
Note: Installing the rigging will add to the appearance
and strength of your airplane, but you will not be able to
remove the wings without cutting the rigging. The rigging
is required if you plan on any type of aggressive flying
with your Jenny.
1. Pass the rigging thread through the hole in the outer
strut as shown.