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Century Helicopter Products Hawk III Instruction Manual

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HAWK III
HAWK III
Instruction Manual
MAIN ROTOR DIAMETER
TAIL ROTOR DIAMETER
OVERALL LENGTH
HEIGHT
ENGINE
BALL BEARINGS
Century Helicopter Products
SPECIFICATIONS
Designed and Developed in USA
1st Edition October, 1999
49.5 in.
9.3 in.
46 in.
16.2 in.
32 ~ 38
29

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  • Page 1 HAWK III HAWK III Instruction Manual SPECIFICATIONS MAIN ROTOR DIAMETER 49.5 in. TAIL ROTOR DIAMETER 9.3 in. OVERALL LENGTH 46 in. HEIGHT 16.2 in. ENGINE 32 ~ 38 BALL BEARINGS Century Helicopter Products Designed and Developed in USA 1st Edition October, 1999...

  • Page 2: Table Of Contents

    Table of Contents Table of Contents ............................1 Introduction ..............................2 Required Items for Assembly ........................3 Building Guide for Hawk III kit & ARF version ..................4 Main Rotor Head Step 1-2 ..........5 Bell Mixers & Main Rotor Grips Step 3-4 ..........

  • Page 3: Introduction

    Building Instructions for the HAWK III helicopter kit Introduction Congratulations on your purchase of Century Helicopter Product's 30 size RC helicopter model. The Hawk helicopter is ideal for beginners new to the hobby through to intermediate pilots and aircraft modelers wanting to get involved in RC helicopters. This kit will accept both airplane and helicopter radios and includes necessary hardware and instructions, be sure to check with us or your local dealer for compatible components.

  • Page 4: Required Items For Assembly

    Necessary Items “Not Included” in the kit. Glow Remote Adapter CN2222 Piezo Gyro CN2017 *Optional Tune Muffler 32-38 Helicopter Engine 6 Channel Helicopter Radio or Equivalent. CN3033 Necessary Tools for Assembly and Adjustments Main Blade Pitch Gauge 15% or 30% 12Volt Start Battery Needle Nose Plier w/PaddleGauge...

  • Page 5: Building Guide For Hawk Iii Kit & Arf Version

    Hawk III Construction Manual This manual has been written for both versions of the Hawk III helicopter: the regular 30 kit CN1000 and the 30 assembled version CN1006 & CN1007. The main portion of the manual covers the full construction of the kit, for those modelers who have purchased the Assembled kits they have only to do the final assembly along with the pushrod setup as detailed below.

  • Page 6: Main Rotor Head Step 1-2

    STEP 1-2 Main Rotor Head Damper Rubber x 2 STEP 1 [HI3181] From parts bag 1, press in the Damper Rubbers and the Guide Pins into the Head Block. Install one M3x10 oilite bearing onto each Rotor head M3x6 Self side of the seesaw Block Tapping Screw...

  • Page 7: Bell Mixers & Main Rotor Grips Step 3-4

    STEP 3-4 Main Blade Grip Assembly 5x13 Ball Main Rotor Note, the long ball is installed pointing Bearing x 2 Blade Grip away from the top of the blade grip. [CNBB1350] [HI3184] STEP 3 From parts bag 1, install one Long Ball and one Short Ball Repeat 2 into the Bell Mixer, insert the...

  • Page 8: Flybar & Final Head Assembly Step 5

    STEP 5-6 Flybar, Paddles & Washout STEP 5 From parts bag 1, slide and center the Flybar through the seesaw arm assembly. Install one Steel ball onto each flybar control arm with one 2mm screw, slide the Spacer, Flybar Control Arm on the flybar.

  • Page 9: Start Shaft Assembly Step 7-8

    STEP 7-8 Start Shaft M5x10 Flat Semi- Washer STEP 7 Assembled From parts bag 2, the Spring Start Shaft Guide Blocks [HW3005] M2x5 Self Tapping are pre-assembled. Slide Screw the Starter Shaft through one of the block assem- M2x5 Flat blies with the M5x11 Ball Washer Bearing facing up and...

  • Page 10: Tail Transmission Output Shaft & Counter Gear Step 9-10

    STEP 9-10 Output Shaft & Counter Gear Tail Transmission STEP 9 M3x4SS Set Screw Output Shaft (small hex key) [HW3059] From parts bag 2, assemble the Tail Transmission Output Gear. Install the E- Ring then slide two Ball Bearings onto E - Ring the Tail Rotor Output Shaft.

  • Page 11: Main Gear, Main Shaft & Elevator Bellcrank Step 11-12

    STEP 11-12 Auto Rotation, Main Gear & Elevator Bellcrank Main Shaft STEP 11 Short end [HW3053] The Main Gear is pre-assembled with the Auto-Rotation Bearing installed. From parts bag 2, the Main Shaft has two holes one farther from one end of the shaft, this end is the bottom of the shaft.

  • Page 12: Upper Side Frames Step 13

    STEP 13 Upper Side Frames STEP 13 From parts bag 2, install two 4x5mm Set Screws on the Mast Stopper then slide the mast stopper on the main shaft,only assemble at this time. Slide one M8x19 Ball Bearing on each end of the main shaft against the mast stopper and auto rotation assembly.

  • Page 13: Upper Frame Assembly Step 14

    STEP 14 Upper Frame Assembly STEP 14 From parts bag 2, insert two long Hex Spacers at the specified locations in the diagram, note that the front hex spacer is installed into the forward-most hole. Install the upper left side frame, taking care that the bearings are aligned with the mating recesses and secure the frames with four 3x35mm Socket Cap Screws through the main shaft bearing block positions and four M3 locknuts.

  • Page 14: Collective & Aileron Levers Step 15

    STEP 15 Collective and Aileron Levers STEP 15 From parts bag 2, press in two M6x10 ball bearings into the front side frames for the collective axle. Attach the front Collective Arm Spacer (hex) and the Collective Axle (6mm dia) to the Right Collective arm (notice that the axle is attached at the middle hole) using two 3x10mm Socket Cap Screws using threadlock.

  • Page 15: Clutch, Clutch Bell, Fan, Shroud & Engine Mount Step 16-17

    STEP 16-17 Clutch, Fan & Engine Mounting STEP 16 Engine From parts bag 3. Thrust Washer or M9x14 FW Remove all parts from the engine crankshaft until you can see the front Engine ball M5x13 Flat ball bearing, install the 9x14mm Flat bearing Washer washer (or washer provided by engine...

  • Page 16: Fuel Tank & Lower Frames Step 18-19

    STEP 18-19 Fuel Tank & Lower Frames STEP 18 From parts bag 3, insert the two pieces of aluminum tubing through the large cap, rubber stopper and small cap, bend the long aluminum tube upwards ( make sure the tube comes to the top of the fuel tank ) and attach the short piece of fuel line and clunk to the short straight piece of tubing.

  • Page 17: Upper & Lower Frame Assembly Step 20-21

    STEP 20-21 Upper & Lower Frames STEP 20 Upper Frame Attach the lower frame assembly to Assembly the upper frame assembly with four 3x16mm Socket Cap Screws and four 3x7mm Washers using threadlock STEP 21 M3x7 Flat Assemble the Lower Washers x 4 Cooling Fan Shroud over the head of the engine using parts...

  • Page 18: Final Rotor Head Assembly & Muffler Step 22-23

    STEP 22-23 Final Rotor Head Assembly & Muffler STEP 22 Completed Rotor Slide the washout assembly from Step 6 onto Head Assembly from the main shaft and snap the elevator lever arm Step 5 onto one of the single front ball on the swash- plate.

  • Page 19: Servo Frame - Airplane Step 24

    STEP 24 Servo Tray (Airplane Radio) The Hawk helicopter is designed to operate with either a 4 channel airplane radio or a 5 channel helicopter radio. Step 24 shows the single collective/throttle servo location for an airplane radio whereas if you are using a helicopter radio skip to Step 25.

  • Page 20: Servo Frame - Helicopter Step 25

    STEP 25 Servo Tray (Heli-Radio) Helicopter Radio 5 Channel Setup STEP 25 From parts bag 5, assemble the servo tray using four 3x16mm Phillips Machine Screws. This is a good time to install the collective and throttle servos from the inside of the left vertical support. ( Note, use the rubber grommets provided with the servos, you can use the screws that came with your servos or the screws provided in the kit ).

  • Page 21: Landing Gear & Tail Output Shaft Step 26-27

    STEP 26-27 Landing Gear & Tail Drive Shaft STEP 26 From parts bag 6, assemble the landing gear by attaching the Aluminum Skids through the Struts, securing them with four 3x5mm Set Screws. Set the distance from the rear of the skid to the strut at 35mm.

  • Page 22: Tail Rotor Output Assembly Step 28-30

    STEP 28-30 Tail Rotor Output Assembly Tail Pitch Ball Links x 2 STEP 28 M2x8 Pin x 2 6x10 Ball From parts bag 7, the [HI3089] Bearing x 2 Tail Pitch Plate and Tail [CNBB1060] Pitch Ball Links are pre- assembled.

  • Page 23: Tail Rotor Hub & Grips Step 31-32

    STEP 31-32 Tail Rotor Hub & Tail Rotor Grips Tail Rotor Hub M3x4SS Set STEP 31 [HW3098] Screw From parts bag 7, install the (small hex key) Tail Rotor Hub on to the tail rotor drive shaft, (position the 3x10 Ball hub so the hole is aligned Bearing x 2 over the hole in the shaft )

  • Page 24: Tail Guide & Drive Shaft Step 33-35

    STEP 33-34 Tail Guide & Tail Gearbox STEP 33 From Bag 7, insert three tail drive shaft Guides on to the Brass Tail Drive Housing, found in the bottom of the box (Note that one guide has a larger center hole than the others, slide this one to the center of the brass tube ), add the remaining two onto the ends.
  • Page 25 STEP 35 Tail Gearbox STEP 35 M3x12 Socket Cap Attach the tail output Screw x 2 gear assembly on to the drive shaft with two 4x4mm Set Screws ( M3x10 Socket make sure the flat spot Cap Screw is aligned with one of the set screws ) using Tail Boom threadlock.

  • Page 26: Tail Boom, Drive & Strut Step 36-37

    STEP 36-37 Tailboom & Horizontal Fin STEP 36 Attach the tail boom assembly to the main mechanics by sliding the tailboom tube into the hole in the rear of the upper frame using five 3x25mm Socket Cap Screws and M3 Locknuts, slowly press the tailboom in, being careful to engage the drive wire the flattened end into the tail rotor output gear shaft.

  • Page 27: Pushrod Setup Step 38

    STEP 38 Pushrod Setup and Adjustments STEP 38 Make up all the control pushrods according to the specified lengths shown in the drawing. These are full scale drawings so you can easily match each pushrod to the page. Please note that these dimensions listed from end to end of the plastic rod-ends are to be taken as correct. Fine tuning may be required as the picture size may change when printed.

  • Page 28: Radio, Servo And Adjustments

    Initial Radio Setup There are various different radios on the market, each having it's own special setup requirements, we have picked the top three brands to give you the basic setup parameters for the computer class radios. Not all features are available on all radios, use values for functions that do apply.
  • Page 29 Servo Setup & Adjustments In the steps 37 through 42 over the next few pages the pushrod hardware will be mounted to the servos horns and ultimately the pushrods themselves. Each step is well described but lets take a few moments to cover a few basic points on setting up individual servos.

  • Page 30: Servo Setup And Pushrods Step 39-45

    STEP 39 Aileron & Collective Linkage ( Helicopter Radio ) STEP 39 The Aileron linkage controls the side to side tilt of the swashplate which in turn causes the helicop- ter to pitch to the left or right ( hence roll cyclic pitch ). Attach two steel balls with two 2mm nuts at a distance of 10-11mm from the center of the servo ( this range may vary depending on your particular radio ) and 12-15 degrees ahead of the center of the servo using threadlock.
  • Page 31 STEP 40 Aileron & Collective/Throttle Linkage (Airplane Radio) STEP 40 The Airplane setup for the Aileron servo is exactly the same as the Helicopter setup, use the same settings as in Step 34. The Collective linkage slides the swashplate up and down causing the blades to increase or decrease in pitch causing the helicopter to go up or down.
  • Page 32 STEP 41-43 Rotor Head Linkages & Elevator Linkage Pushrod I x 2 Step 41 When attaching all pushrods, make sure same length pushrods are actually the same Pushrod length from the beginning otherwise it will C x 2 be difficult later to figure out where the linkage problems are coming from.
  • Page 33 STEP 44 Elevator & Rudder Linkage ( Helicopter & Airplane radio ) Elevator Servo Pushrod E As the elevator stick is moved upwards the elevator pushrod will move backwards tilting the swashplate forewards. Install one steel ball into the servo arm from the bottom secured with one 2mm nut.

  • Page 34: Main Blades & Canopy Step 46-48

    STEP 42-43 Throttle Linkage & Main Blades Step 42 From Bag 4, attach one steel ball one 2mm nut, to both the Throttle servo horn and the Throttle Extension from Step 17 using threadlock. Position the ball at 10mm from the center of the servo and in the outermost hole on the metal throttle arm.
  • Page 35 Step 45 M3x6 Self Tapping Screw x 2 The two holes for the rear canopy mount have to be moved to 14mm from the rear and bottom edge as Hawk III shown. Attach the canopy using two Canopy Retaining Screws. HI3131D...

  • Page 36: Arf Supplemental Instructions

    ARF Supplemental Instructions These instructions are to supplement the regular Hawk III instruction manual and to assist as some disassembly is required to install all necessary components. Open the large bags containing the landing gear, mainshaft, and inside sealed bags and the rotor head, lay out these components for easy identification.

  • Page 37: Radio Components & Balancing

    Radio Components & Balancing Gyro Having completed all the assembly for the helicopter, all that remains is mounting the radio receiver, receiver battery and the gyro. For mechanical gyros: mount below the main shaft on the gyro tray Gyro Tray Mechanical For piezo gyros: mount inside the canopy Gyro...

  • Page 38: Setup And Installation Gyro

    Setup and Installation of PG-01T Gyro (purchased separately) Installation 1. First of all, please connect the rudder servo to your receiver. Turn on the transmitter and receiver. It is particularly important that the rudder trim (mechanical and electronic) are set to the neutral position and the servo horn is installed in the neutral position on the helicopter.

  • Page 39: Radio Setup - Pitch & Throttle Curve Settings

    Final Adjustments - Radio Setup Now that the servo installation into the helicopter is finished the following pages should be reviewed. As various types of radios can be used to setup the helicopter, some of the following information may not apply. Servo Direction (Servo Reversing) Pitch &...

  • Page 40: Pitch Curve

    Pitch Curve Hovering - ( linear ) Normal Flight Mode Throttle Curve Adjustments After several tanks of fuel the engine will be run-in, at this time you can modify throttle settings but remem- ber that the smoother the engine the less adjustment required.

  • Page 41: Tail Rotor Setup

    Tail Rotor Setup For each flight mode setting, there will be different Revo-mixing amounts. For forward flight the settings What separates airplane radio equipment from the will be lower than hovering due to the aerodynamic helicopter version is in the control of the individual forces effecting the helicopter.

  • Page 42: Starting The Engine

    Before Flying your Hawk 30 Helicopter Before each flight, check that all bolts and screws are tight. Simply flying your helicopter, will loosen any screws which are not threadlocked or secured with a lock nut. First Flights For the beginner pilot, a training pod is strongly recommended to assist in learining to hover the helicopter with substantially reduced risk of crashing.
  • Page 43 Starting the engine for the first time. The model engine is the single most difficult part of model helicopters to the beginner, second only to learning to fly. For this reason we have taken the time to go through starting the engine the first time with you to help you to understand the basic operation and tuning of the engine.

  • Page 44: Basic Hovering - Pre Flight Checkup & Log

    Basic Hovering Hovering When all is set, ready and checked, attach your training gear/pod and start the engine. (1) Place the helicopter pointing into the wind and stand behind the model about 15' away. (2) Always watch the nose of the helicopter, move the rudder left and the nose will move left. (3) Start by increasing the throttle slowly until the helicopter rises 2-6 inches off the ground then set it back down.
  • Page 45 Hawk III Bag Parts List Washout Arm Assembly Bag 1 Slide Tube Rotorhead Block Short Ball Offset Plate Bag 2 M3x16 Socket Cap Screw Mast Stopper Tie Bar M3x7 Flat Washer Left Upper Sideframe Bearing M8x19x6 Center Hub Swashplate Right Upper Sideframe...

  • Page 46: Parts List By Bag

    HI3115 SERVO MOUNT FRAME SET BB1812A BALL BEARING 12X18X16 HI3122 LANDING STRUTS (PLASTIC) Hawk & Hawk III Upgrade Parts CN2206 CNC Machined Flybar Control Arms (2) CN0427A Hex start system w/hex adapter - 5mm CN2207 CNC Machined Washout Mixing Arms (2)

  • Page 47: Replacement Parts List

    Century Optional Upgrades Carbon Graphite CNC Machined CNC Machined Finish Dual Ball Bearing Tail Whip Antenna Blade Grips & Aluminum Cap & Washer One Piece Servo Steel Hawk Pack Falcon Don’t ever need to cut your receiver Boy! these caps and washers antenna anymore, kit comes with a (Hawk, Falcon &...
  • Page 48 CN2226 Hardened s. shaft CN2213 Machined Mount mechanical, photocopying, recording or otherwise, CN2028E (Extension Purple) without the prior written permission of the CN2202 Turbo cooling fan CN2137 Die Cut Mount publisher, Century Helicopter Products. CN2209 (Cone Purple)

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