Radikal N640
Page 2
INTRODUCTION
Thank You
Warning!
Flight Checklist
General Guidelines
Pre-Assembly Information
Thank you for purchasing this new class of helicopters. By incorporating the use of blade sizes up to 640mm allowing 700 class flight
characteristics in a smaller, you’ve made the right choice by going for an economical yet extremely high performance helicopter.
This R/C helicopter is not a toy! It is a precision machine requiring proper assembly and setup to avoid accidents. It is the responsibility of
the owner to operate this product in a safe manner as it can inflict serious injury otherwise. It is important for the user/pilot to be respon-
sible for the damage the model is capable of inflicting on one’s self and others around the model during its operation. Century Helicopter
Products, affiliated individuals, and shops/sellers hold no accountability for the operation or use of this model. It is recommended that
if you are in doubt of your abilities; seek assistance from experienced radio control modelers and associations. Although the helicopter
is considered small in size, you must be very cautious during the operation of the model as serious damage, injury, or death can occur.
Apply thread lock to all metal to metal thread contact points. Do not apply CA (cyanoacrylate) glue or thread lock to ny-lock nuts (metal
nuts with plastic inserts). Diagrams indicated by bounding boxes for screws, bearings, etc. are illustrated at a 1-to-1 ratio. All other il-
lustrations are not drawn to scale. Throughout this manula, you will find building tips. Please follow the tips and use common sense when
building.
Upon opening the kit, all the major component parts are bagged for ease of assembly which correspond to the sections of the manual.
Various assemblies have been pre-assembled however, only as a reference assembly. Final assembly is up to the user. Installation onto
the particular parts, screws and nuts required for each step are packaged in the same bag as the parts. Be careful when opening each
bag as not to lose any hardware. Care has been taken in filling and packing of each bag however mistakes do happen. If there is a parts
shortage or missing hardware, please contact us directly or contact your place of purchase.
Century Helicopter Products
1740-C Junction Ave.
San Jose, CA. 95112
U.S.A.
www.centuryheli.com
Make sure your transmitter battery is fully charged.
Turn on the transmitter FIRST prior to turning on anything else on the model.
Inspect all parts before each flight to ensure no damage has occurred.
Check all nuts, bolts, and screws to be sure they are securely fastened.
Verify all parts are installed correctly and in proper working condition.
Make sure you have control of the model prior to engaging the motor or engine.
Allow all the components to initialize and test all controls.
Fly the model and be sure the model is capable of a proper hover prior to performing aerobatics.
Land the model and shut off the motor or engine.
Turn off or unplug any battery(ies) on the model BEFORE turning off your transmitter.
