HAWK III Instruction Manual SPECIFICATIONS ☛ MAIN ROTOR DIAMETER ☛ TAIL ROTOR DIAMETER ☛ OVERALL LENGTH ☛ HEIGHT ☛ ENGINE ☛ BALL BEARINGS 49.5 in. 9.3 in. 46 in. 16.2 in.
Table of Contents Table of Contents .......................................................................................................................................... 1 Introduction .................................................................................................................................................. 2 Required Items for Assembly .......................................................................................................................
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.
Necessary Items “Not Included” in the kit. Piezo Gyro Glow Remote Adapter CN2222 CN2017 *Optional Tune Muffler CN3033 32-38 Helicopter Engine 6 Channel Helicopter Radio or Equivalent. Necessary Tools for Assembly and Adjustments Main Blade Pitch Gauge w/PaddleGauge CN2026 5.
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.
STEP 1-2 Main Rotor Head Damper Rubber x 2 [HI3181] STEP 1 From parts bag 1, press in the Damper Rubbers and the Guide Pins into the Head Block. Install one M3x10 oilite bearing onto each side of the seesaw shaft and insert into the Head Block. Fasten the two M3x6 self tapping screws. Rotor head Block [HI3160A] M3x6 Self Tapping Screw x2 Optional Seesaw Ball Bearings CNBB1030 x 2 Guide Pins x 2 2.
STEP 3-4 Main Blade Grip Assembly Note, the long ball is installed pointing away from the top of the blade grip. 5x13 Ball Bearing x 2 [CNBB1350] Main Rotor Blade Grip [HI3184] STEP 3 From parts bag 1, install one Long Ball and one Short Ball into the Bell Mixer, insert the Side View slide tube into the bell mixer arm (Note: the oilite bearings are pre-installed) and secure onto the blade grip with one M3x16 Socket Cap screw and Bell Mixer M3x7 Flat washer.
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. Loosely tighten the control arms. Using a ruler, check the distance between the end of the flybar and the control arm and adjust until the lengths are the same and there is no free play between the control arms and the rotor head.
STEP 7-8 Start Shaft STEP 7 M5x10 Flat Washer SemiAssembled From parts bag 2, the Start Shaft Guide Blocks are pre-assembled. Slide the Starter Shaft through one of the block assemblies with the M5x11 Ball Bearing facing up and slide the spring and 5mm Washer onto the shaft.
STEP 9-10 Output Shaft & Counter Gear STEP 9 M3x4SS Set Screw (small hex key) From parts bag 2, assemble the Tail Transmission Output Gear. Install the ERing then slide two Ball Bearings onto the Tail Rotor Output Shaft. Insert one 3x4mm Set Screw using threadlock into the gear, note where the flat spot is on the shaft and slide the gear on and tighten the set screw ( Make sure the set screw is positioned over the flat spot ).
STEP 11-12 Auto Rotation, Main Gear & Elevator Bellcrank Main Shaft [HW3053] STEP 11 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. Insert the bottom end through the auto rotation gear assembly aligning the holes and secure the Main Shaft using one 3x16mm Socket Cap Screw and one 3mm Locknut.
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. Attach the starter shaft assembly with four 3x12mm Self Tapping Screws1 ( observe the correct direction of the block assemblies ).
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.
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.
STEP 16-17 Clutch, Fan & Engine Mounting STEP 16 From parts bag 3. Remove all parts from the engine crankshaft until you can see the front ball bearing, install the 9x14mm Flat washer (or washer provided by engine manufacturer), insert the Ball Bearings into the clutch bell assembly and place on the crankshaft.
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. Test fit the assembly into the Fuel Tank and make sure that the clunk reaches the end but moves freely and the vent tube is near the top of the tank but does not touch.
STEP 20-21 Upper & Lower Frames STEP 20 Attach the lower frame assembly to the upper frame assembly with four 3x16mm Socket Cap Screws and four 3x7mm Washers using threadlock. Upper Frame Assembly STEP 21 Assemble the Lower Cooling Fan Shroud over the head of the engine using parts from bag 3, assemble the two halvesusing five 2.6x10mm Self Tapping Screws. Install the engine assembly into the lower side frames using four 3x16mm Socket Cap Screws and four 3x7mm Large Flat Washers.
STEP 22-23 Final Rotor Head Assembly & Muffler STEP 22 Completed Rotor Head Assembly from Step 5 Slide the washout assembly from Step 6 onto the main shaft and snap the elevator lever arm onto one of the single front ball on the swashplate. Slide the completed rotor head assembly from Step 5 onto the shaft and align the hole in the head block with the hole in the top of the main shaft and insert one 3x16mm Socket Cap Screw and 3mm locknut (from Bag 2) to secure the two.
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. Alternately for the 4-channel radio, a "Y" harness ( optional) can be used with Step 25 plugged into the throttle channel on the radio (provides more torque to collective).
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 ). Attach the rudder, aileron and elevator servos noticing the orientation in to top servo tray.
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. Attach the landing gear to the main mechanics using four 3x16mm Phillips Machine Screws and locknuts.
STEP 28-30 Tail Rotor Output Assembly STEP 28 From parts bag 7, the Tail Pitch Plate and Tail Pitch Ball Links are preassembled. (Note: apply some JB weld to the outside of the lock ring to avoid the assembly loosening.) Put this assembly aside for now.
STEP 31-32 Tail Rotor Hub & Tail Rotor Grips STEP 31 From parts bag 7, install the Tail Rotor Hub on to the tail rotor drive shaft, (position the hub so the hole is aligned over the hole in the shaft ) and secure with one 3x4 mm Set Screw using threadlock. Using one 3x16mm Socket Cap Screw, attach one Ball Bearing on each side of the hub assembly using threadlock ( apply the threadlock to the threads in the hub to avoid getting threadlock into the bearings).
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. Glue the guides into position using Zap Ca on the brass tube.
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 ( make sure the flat spot is aligned with one of the set screws ) using Tail Boom threadlock. Position the Assembly output gear assembly into the right gear box half Flat Spot (insure the 2 bevel gears are meshed properly and the ball bearings are fully seated in their recesses ) and liberally grease the gears before closing the gearbox.
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. The slots on the end of the tailboom will self align with molded pins inside the upper side frame.
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. Also some servos offer different horn placements for fine tuning.
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. For those that are using either the airplane version or an analog radio some of the following information will still apply.
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. By this time the radio will have been charged overnight. Recheck that all the servo trims are centered.
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 helicopter 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.
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. For the Collective/Throttle using an Airplane radio, the two controls are made by the same servo.
STEP 41-43 Rotor Head Linkages & Elevator Linkage Pushrod Ix2 Step 41 Pushrod Cx2 Pushrod Ax2 Pushrod J x 2 When attaching all pushrods, make sure same length pushrods are actually the same length from the beginning otherwise it will be difficult later to figure out where the linkage problems are coming from. The entire rotor head is set up the same way for both types of radios.
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. Trim the excess of the screw off flush with the nut.
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. With the radio on, and the throttle stick centered and the trim in the center, press the servo horn onto the servo so the ball is at 90 degrees to the servo ( the hovering position ).
STEP 44-45 Canopy & Decals The Canopy has a line molded into the plastic to follow when trimming the windshield part out, be careful, trim the innermost line leaving the 6mm band for attaching the windshield. Using a sharp hobby knife carefully scribe a line several times into the plastic until you cut through the material.
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. Follow the numbered steps, for those who purchased the ARF with Engine and Muffler skip over steps 16, 17, 21.
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 For piezo gyros: mount inside the canopy Install the gyro using double sided foam tape ( supplied with gyro ) put a full strip along the bottom of the gyro unit and press onto the surface. For a good bond make sure both surfaces are clean and dry.
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. Recheck the neutral position again as this a vital point in the correct calibration of the PG-01T unit.
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 & Throttle Curve Adjustments Check that all servos move in the correct directions, see the diagram on pg 36.
Pitch Curve Hovering - ( linear ) Normal Flight Mode 5 Pitch Range 10 9 Throttle Curve Adjustments After several tanks of fuel the engine will be run-in, at this time you can modify throttle settings but remember that the smoother the engine the less adjustment required. Not all engine / muffler / fuel combinations are the same which will shift some of the values shown below.
Tail Rotor Setup What separates airplane radio equipment from the helicopter version is in the control of the individual curves discussed earlier and in the Revo-mixing. Take a moment to consider the helicopter hovering in front of you. 1 Nose rotates left at hover. Problem: Not enough pitch in tail rotor to match torque setting of engine. Action: Increase pitch by shortening the rudder pushrod. Pilot 2 Nose rotates right at hover.
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.
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. Items to recheck: 1) Servo direction for the throttle channel.
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.
Bag 1 Rotorhead Block Offset Plate Tie Bar Center Hub Bearing Holder Spacer M3x6x1.
Hawk III Replacement Parts CN2230H HW3000 HI3001 HW3005 HI3007 HI3009 HI3010 HW3011 HW3017 HI3020 HW3024 HI3031A HI3032A HI3035A HI3040 HW3042 HW3045 HW3050 HW3053 HW3054 HI3056 HW3057 HW3059 HW3062 HW3063 HW3064C HI3067 HW3070 HW3073 HI3074 HI3075 HI3078 HI3087 HI3089 HI3096 HW3098 HI3099 HI3102A HI3106 HI3107 HI3112 HI3115 HI3122 CRASH KIT -(Main Blades, Main Shaft, Tail Boom, Feathering Shaft and Flybar) HARDWARE PACK STARTER CONE SET STARTER SHAFT SET STARTER SHAFT BEARING BLOCKS COOLING FAN CLUTCH BEL
Century Optional Upgrades Carbon Graphite Whip Antenna Don’t ever need to cut your receiver antenna anymore, kit comes with a hollow fiber tube and CNC base mount. allows you to insert antenna into the tube. Antenna will be better protected and look so cool too! CN2124 Antenna Hex Start Systems CNC Machined Aluminum Servo Arm Pack (Hawk, Falcon & Phoenix) To completely eliminate slop on control surfaces.
Century Hawk Upgrades Head Button (Hawk, Falcon & Phoenix) Left hand threaded black or Purple anodized large head button for easy stopping of the rotor head.
