2
35% Extra 300 ARF Assembly Manual
2
Intro
Pulling from the success of its predecessor, designer Mike
McConville built on strengths of the popular 35% Extra 260
to create the new Extra 300, which is undoubtedly his best
Extra design yet.
With improved aerodynamic design, and a completely
reengineered structure, the Extra 300 offers straight and true
flight performance in an airframe designed to stand up to the
most extreme acrobatic routines.
Ideal for IMAC competition, freestyle flying or extreme 3D,
the Extra will not disappoint.
Finished in a new trim scheme from the creative mind of
Mike Hilderbrandt, the Extra is as visible in the air as it is
beautiful on the tarmac.
All guess work has been taken out of this ARF— the most
popular engine and exhaust choices are covered in this
manual.
The Hangar 9® 35% Extra 300 sets a new standard for giant
—scale: ease of assembly and world class performance.
Enjoy your new 300 and many happy landings.
Product Support
For technical assistance with this product, please contact the
appropriate Horizon Product Support office.
Specifications
Wingspan
105 in (2.7 m)
Length
98.0 in (2.5 m)
Wing Area
2003 sq in (129.2 sq dm)
Weight
27.0–30.0 lb (12.2–13.6 kg)
Transmitter & Servos
4-channel (or greater) with 8 servos
Engine
100cc - 120cc gas engine
WARNING: Read the ENTIRE instruction manual to
become familiar with the features of the product before
operating. Failure to operate the product correctly can result
in damage to the product, personal property and cause
serious injury.
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.
Do not attempt disassembly, use with incompatible
components or augment product in any way without the
approval of Horizon Hobby, Inc. This 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 serious injury.
Table of Contents
Intro ................................................................................. 2
Product Support .............................................................. 2
Specifications ................................................................... 2
Included Parts ................................................................. 3
Contents of Kit and Parts Number .................................... 4
Safety Precautions and Warnings .................................... 4
35% Extra 300 Operating Recommendations .................. 5
Important Information Regarding Warranty ..................... 5
Using the Manual ............................................................. 5
Aileron Servos Installation ............................................... 7
Elevator Servo Installation ............................................. 11
Rudder Installation ......................................................... 13
Tail Wheel Assembly Installation .................................... 14
Rudder Servo Installation .............................................. 15
Main Gear and Wheel Pants Installation ......................... 17
Engine and throttle Servo Installation ............................ 19
In-Cowl Mufflers Installation .......................................... 22
Canisters Installation ...................................................... 23
Tuned Pipe Installation .................................................. 25
Receiver and Ignition Battery Installation ....................... 28
Ignition Module, Switch and Regulator Installation ........ 29
Fuel Tank, Fill and Over Flow Installation ........................ 31
Cowl Mounting ............................................................... 33
Pilot Installation ............................................................. 33
Receiver, Switch and throttle Servo
Regulator Installation .................................................. 34
Satellite Receivers Installation ....................................... 36
Center of Gravity ............................................................ 37
Control Throws .............................................................. 37
Applying Decals ............................................................. 38
Preflight ......................................................................... 39
Range Test Your Radio ................................................... 39
Safety Do’s and Don’ts for Pilots .................................... 39
Daily Flight Checks ......................................................... 39
Warranty and Repair Policy ............................................ 40
Warranty Services .......................................................... 40
Compliance Information for the European Union ........... 41
2011 Official Academy of
Model Aeronautics Safety Code ................................. 42
Notice
All instructions, warranties and other collateral
documents are subject to change at the sole discretion
of Horizon Hobby, Inc. For up-to-date product
literature, visit http://www.horizonhobby.com and click
on the support tab for this product.
Meaning of Special Language
The following terms are used throughout the product
literature to indicate various levels of potential harm
when operating this product:
NOTICE
: Procedures, which if not properly followed, create
a possibility of physical property damage AND a little or no
possibility of injury.
CAUTION
: Procedures, which if not properly followed,
create the probability of physical property damage AND a
possibility of serious injury.
WARNING
: Procedures, which if not properly followed,
create the probability of property damage, collateral damage,
and serious injury OR create a high probability of superficial
injury.
