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E-flite Piper L-4 Grasshopper ARF Assembly Manual

Recommended Radio Equipment

You will need a minimum of a 4-channel transmitter, 

receiver and four 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 using four 6.0-Gram Super Sub-Micro 

servos from Spektrum.

If you own a Spektrum radio, just add an AR6300 

DSM2

 receiver and four 6.0-Gram Super Sub-Micro 

servos. The SPMAR6300F flight pack works perfectly 

for this application. We show the installation of the 

AR6300 receiver in the manual.

Transmitter

SPMR6600 

 DX6i 6-Channel Full Range 

w/o Servos or Receiver

Receiver and Servos

SPMAR6300F 

 AR6300 DSM2 Nanolite 

6-Channel Receiver FlightPack

Servos only

SPMDSP60J 

 6.0-Gram Super Sub-Micro 

Digital Programmable Servo 

JST (4)

Receiver only

SPMAR6300 

 AR6300 DSM2 Nanolite 

6-Channel Receiver, Air

Also required

SPMYHJST3UL 

 3-inch Y-Harness JST Ultra 

Lightweight

SPMEXJST3UL 

 3-inch JST Extension Ultra 

Lightweight

OR

SPMEXJST6UL 

 6-inch Y-Harness JST Ultra 

Lightweight  (2)(Optional for 

computer radios)

Optional Accessories

EFLA110 

Power Meter

EFLC3005 

 Celectra

 1- to 3-Cell  

Li-Po Charger

EFLC505 

 Intelligent 1- to 5-Cell  

Balancing Charger

Brushless Outrunner Setup

EFLM1130 

 Park 250 Brushless Outrunner 

Motor, 2200Kv

GWSEP6050 

6 x 5 Slow Flyer Propeller

EFLA1010 

 10-Amp Pro Brushless ESC

EFLB4302SJ 

 430mAh 2S 7.4V 20C Li-Po, 

20AWG JST

Optional battery:

THP7302SJPL2 

 730mAh 2S 7.4V 20C  

Pro Lite V2 Li-Po, JST

Required Tools and Adhesives

Tools & Equipment

Cardstock 

Clear tape

Hobby scissors 

Hobby knife (#11 blade)

Low-tack tape 

Medium grit sandpaper

Pencil 

Pin vise

Pliers 

Ruler (EFLA264)

Hex wrench: .050-inch

Phillips Screwdriver: #00, #0

Flat blade screwdriver: 1.5mm

Drill bit: 1/16-inch (1.5mm), 5/64-inch (2mm)

Adhesives

Medium CA

Threadlock

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.

Covering Warning

The Piper L-4 Grasshopper is built very light to achieve 

the best flight performance possible. When using an 

iron or heat gun to shrink the covering or to tighten 

up any wrinkles, it is very important that care is 

taken not to warp any of the surfaces. It is possible to 

induce warps into the surfaces during this procedure. 

We suggest taking your time and care to make sure 

that no warps are caused as this will affect the flight 

performance of the airplane.

During the course of building your model we suggest 

that you use a soft base for the building surface. 

Such things as a foam stand, large piece of bedding 

foam or a thick bath towel will work well and help 

protect the model from damage during assembly. 

This is not shown in the assembly photographs to 

display the detail of the actual building of the model.

Your L-4 Grasshopper has been assembled using the 

techniques that keep the weight as low as possible 

for the best flight performance. Please handle the 

airframe with care during assembly and during 

transportation to keep from damaging it accidentally.

The Spektrum trademark is used with permission 

of Bachmann Industries, Inc.

Summary of Contents for Piper L-4 Grasshopper ARF

Page 1: ...cations Wingspan 38 2 in 970mm Length 23 7 in 600mm Wing Area 210 sq in 13 5 sq dm Weight w o Battery 8 00 8 70 oz 227 247 g Weight w Battery 9 00 9 70 oz 255 275 g Piper L 4 Grasshopper ARF Assembly...

Page 2: ...l 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 tr...

Page 3: ...screwdriver 1 5mm Drill bit 1 16 inch 1 5mm 5 64 inch 2mm Adhesives Medium CA Threadlock Note on Lithium Polymer Batteries Lithium Polymer batteries are significantly more volatile than alkaline or Ni...

Page 4: ...he fuselage 3 The landing gear will fit snugly into the slot in the fuselage If you do not plan to remove the landing gear at any time then we suggest that you tack glue it in the slot with medium CA...

Page 5: ...e servo rails 5 Use a 0 Phillips screwdriver and the screws provided with the servos to secure them in the fuselage Receiver and Speed Control Installation Required Parts Fuselage assembly Receiver Ad...

Page 6: ...accessed later 6 Use hobby scissors to cut another piece of hook and loop tape to the size of your speed control Apply the hook and loop tape to the speed control and place the speed control in the m...

Page 7: ...dder pushrod into the tube inside the fuselage 2 Insert the bend in the pushrod wire through the outer hole of the rudder control horn 3 Slide a micro pushrod keeper over the end of the pushrod wire 4...

Page 8: ...pushrod wire for the rudder Secure the servo horn on the rudder servo so it is perpendicular to the rudder servo 11 Use a ruler to make sure the rudder and fin are in alignment with each other Always...

Page 9: ...rewall using the two 5mm plywood spacers and two 2mm x 16mm sheet metal screws A 0 Phillips screwdriver will be required to tighten the two screws Note that there are two different hole location dista...

Page 10: ...the motor is centered in the opening of the cowl and that the propeller does not rub against the cowl The cowling should be slid just far enough back that it does not cover the battery tray on the bot...

Page 11: ...screws 2 The motor shaft must be repositioned to accept the propeller adapter Follow the instructions provided with the motor to reposition the motor shaft Use care not to damage the motor Always use...

Page 12: ...o over the orange prop in a smooth curved pattern to get a simulated wood finish on the propeller Use low tack tape to keep the cowl in position while drilling the holes 10 Position the cowling so the...

Page 13: ...en Windscreen support 2 Required Tools and Adhesives Hobby scissors Medium CA Clear tape 1 Route the Y harness to the root ribs of the fuselage as shown 2 Use medium CA to glue the windscreen supports...

Page 14: ...panel Place the aileron servo on the cover so the servo arm is aligned with the edge of the cover and centered in the slot as shown Make sure the servo does not hang over the edges of the servo cover...

Page 15: ...ws provided with the servo and a 0 Phillips screwdriver to secure the servo to the servo mounting blocks 8 Use a 00 Phillips screwdriver to remove the servo horn from the aileron servo Use a pin vise...

Page 16: ...ps screwdriver to secure the cover in the wing 15 Insert the Z bend on the 23 8 inch 61mm aileron pushrod wire through the center hole of the aileron control horn The wire should be inserted through t...

Page 17: ...cket in the fuselage 3 Continue sliding the wing into position guiding the aileron servo lead in the fuselage Now is a good time to plug the aileron leads into the Y harness The wing will fit tight ag...

Page 18: ...ff of the top windscreen Use clear tape at the front and rear to hold the windscreen on Control Throws 1 Turn on the transmitter and receiver of your model Check the movement of the rudder using the t...

Page 19: ...hangs level or slightly nose down This is the correct balance point for your model You might find that you need to shift the battery slightly to either the front or back of the fuselage to achieve th...

Page 20: ...o starting your aircraft turn off your transmitter then turn it back on Do this each time you start your aircraft If any critical switches are on without your knowledge the transmitter alarm will soun...

Page 21: ...ditional 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...

Page 22: ...ehold waste disposal service or where you purchased the product Age Recommendation 14 years or over Not a toy Not intended for use by children without direct adult supervision 2009 Official Academy of...

Page 23: ...ront of the line In the case of airshows demonstrations straight line must be established An area away from the line must be maintained for spectators Intentional flying behind the line is prohibited...

Page 24: ...Printed 08 09 16025 2009 Horizon Hobby Inc 4105 Fieldstone Road Champaign Illinois 61822 USA 877 504 0233 horizonhobby com E fliteRC com...

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