Wingspan: 39.7 in (1000mm) Overall Length: 44.8 in (1130mm) Wing Area: 548.7 sq. in. (35.4 sq. dm.) Flying Weight: 37.0 oz (1050 g) Wing Loading 30.0g /sq.dm Motor Size: 3536-KV900 Radio: 4+ channel radio system (Required) Servos: (4*9g) servos CG (center of gravity): 3-3/4 to 4 in (95-100mm) back from the leading edge of the top wing Prop Size: 11x7 electric propeller Speed Control : 40-amp brushless Recommended Battery: 11.1V(3S) 2200 mAh LiPo (Required) Instruction Manual
Transcript
Wingspan: 39.7 in (1000mm)
Overall Length: 44.8 in (1130mm)
Wing Area: 548.7 sq. in. (35.4 sq. dm.)
Flying Weight: 37.0 oz (1050 g)
Wing Loading 30.0g /sq.dm
Motor Size: 3536-KV900
Radio: 4+ channel radio system (Required)
Servos: (4*9g) servos
CG (center of gravity): 3-3/4 to 4 in (95-100mm) back
from the leading edge of the top wing
Prop Size: 11x7 electric propeller
Speed Control : 40-amp brushless
Recommended Battery: 11.1V(3S) 2200 mAh LiPo (Required)
InstructionManual
1
TABLE OF CONTENTS
INTRODUCTION
IMPORTANT!!!Two of the most important things you can do to preserve the radio controlled aircraft hobby are to avoid fl ying near full-scale aircraft and avoid fl ying near or over groups of people.
PROTECT YOUR MODEL, YOURSELF & OTHERS… FOLLOW THESE
IMPORTANT SAFETY PRECAUTIONS
Thank you for your purchase of HK Arcus, a aerobatic Pattern Biplane, perfect for honing your precision flying skills. Features the light and durable EPO material, the efficient motor and the advanced propeller couple with the 3S Lipo battery make this biplane high power to weight ratio for ultra performance and vertical climb.
After opening the box, you will be greeted by the sleek lines of this gorgeous aircraft come together on your work bench. Fortunately, all of the time consuming work has been done for you, the bolt together assembly allows this plane to be flight ready in less than 15 minutes.
Before beginning the assembly please read this instruction thoroughly to gain an understanding of the sequence of steps and a general awareness of the recommended assembly procedures.
1. Your HK Arcus should not be considered a toy, but rather sophisticated, working model that functions very much like a full-size airplane. Because of its performance capabilities, if not assembled and operated correctly, could possibly cause injury to yourself or spectators and damage to property.2. You must assemble the model according to the instructions. Do not alter or modify the model, as doing so may result in an unsafe or unflyable model. In a few cases the instructions may differ slightly from the photos. In those instances the written instructions should be considered as correct.3. If you are not an experienced pilot or have not flown this type of model before, we recommend that you get the assistance of an experienced pilot in your R/C club for your first flights. If you’re not a member of a club, your local hobby shop has information about clubs in your area whose m e m b e r s h i p i n c l u d e s e x p e r i e n c e d p i l o t s .4. While this kit has been flight tested to exceed normal use,if the plane will be used for extremely high stress flying, such as racing, or if an motor larger than one in the recommended range is used, the modeler is responsible for taking steps toreinforce the high stress points and/or substituting hardwaremore suitable for the increased stress. We, as the kit manufacturer, provide you with a top quality, thoroughly tested kit and instructions, but ultimately the quality and fly ability of your finished model depends on how you build it; therefore, we cannot in any way guarantee the performance of your completed model, and no representations are expressed or implied as to theperformance or safety of your completed model.
The following items are required for assembling the ArcusARF:
ORDERING REPLACEMENT PARTS
Replacement parts for the HOBBYKING Arcusare available using the part numbers in the Replacement Parts List that follows. Parts are available
If additional assistance is required for any reason, contact Product Support by HK TEAM at www.hobbyking.com
Swivel ball link plier #2Phillips screw driver
KIT INSPECTION
Before starting to build, inspect the parts to make sure they are of acceptable quality. If any parts are missing or are not of acceptable quality, or if you need assistance with assembly, contact HK Product Support Team. When reporting defective or missing parts, use the part name exactly as they are written in the KIT CONTENTS list.
REPLACEMENT PARTS LIST
Order No. Description
KIT CONTENTS
1
2
4
5
6
7 8 9
10
3
1. Top wing2. Lower wing3. Fuselage (With thespinner)4. Horizontal stabilizer5. Main landing gear6. Propeller7. Interplane struts8. Screw set 9. Linkage rods10. Rear landing gear
2
52769
52770
52771
52772
52773
52774
52775
52776
52777
52778
Fuselage
Main Wing （TOP)
Main Wing （Lower)
Horizontal stabilizer
Cowl
Spinner set
Interplane Struts
Landing gear strut
Wheel set
Wheel pant
52779
52780
52781
52782
52783
52784
Tail wheel assembly
Linkage
Screw set
Sticker
Motor shaft
Out-Runner brushless motor
through hobbyking.com
3
CHARGE THE BATTERY PACKS
Before you begin assembling your Hobbyking Arcus, thoroughly read the instruction manual included with the battery charger. Also familiarize yourself with the following lithium polymer battery cautions. When satisf ed with your understanding of the battery charge process and safe handling of LiPo batteries, charge your f ight battery so it will be ready to use when your assembly is complete.
LITHIUM BATTERY HANDLING AND USAGE
WARNING!! Read the entire instruction sheet included with your battery charger. Failure to follow all instructions could cause permanent damage to the battery and its surroundings, and cause bodily harm!
� O NLY use a Li-Po approved charger. NEVER use a NiCd/NiMH peak charger!
� NEVER charge in excess of 4.20V per cell.
� O NLY charge through the “charge” lead. NEVER charge through the “discharge” lead.
� NEVER charge at currents greater than 1C.
� ALWAYS set charger’s output volts to match battery volts.
� ALWAYS charge in a fi reproof location.
� NEVER trickle charge.
� N EVER allow the battery temperature to exceed 150° F (65° C).
� N EVER disassemble or modify pack wiring in any way or puncture cells.
� NEVER discharge below 3.0V per cell.
� N EVER place on combustible materials or leave unattended during charge or discharge.
� ALWAYS KEEP OUT OF REACH OF CHILDREN.
ASSEMBLE THE MODEL
The general maintenanceNote: Before using CA or Epoxy glue, please test fit the parts before applying the glue to make sure the parts fit properly together.
The fuselage assembly
1. .
Equip the left fuselage half with the parts as shown in the picture and glue both fuselage halves together
2.
.
Attach the tail wheel to the rear landing gear assembly as shown in the picture and install the rear landing gear to the fuselage using two screws
3. .
Install the swivel ball on the rudder horn and glue the horn to the rudder using foam safe glue
4. .
Glue in the magnets for the cowling and battery hatch
5. .
Before installation of the motor and propeller, connect the ESC to the motor
6. .
Attach the sheet metal to the battery hatch and put the hatch into place
4
1.
. Attach the installation parts (interplane strut
mounting base, swivel ball mounting plate, wing mounting washers) to the lower wing using Epoxy
7.
.
Glue the servo mounting brackets into place using thick CA. Add a drop of CA to the screw mounting holes and let cure to strengthen the plywood before mounting the servos into place
2.
.
Install the control surface horns to the lower wings using Epoxy and mount the aileron servos in the servo bays using Epoxy
4.
.
Install the strut mounting bases, the swivel ball mounting plates and the wing mounting washers to the top wing using Epoxy
3. .Install the lower wing mounting nose using Epoxy
The main wing assembly
5
1. Insert the CF rod into the stabilizer joiner fully and a small drip of CA is needed to fix the rod firmly in it.
2. Attach the swivel ball to the hole of the elevator control horn as the picture shows.
3. .
Test fit and then attach both joining parts to the Stabilizer using Epoxy
The main landing gear assembly
1.
.
Put together the wheel pants clips using CA. Secure the gear axles with the nylon nuts provided and fit the wheels into the wheel pants and the wheel pants to the clips. Put the wheel assembly onto the axles, align the wheel pants and secure them by using four wood screws on each side on the inside of the strut. Put a washer on each axle in between the pants and the wheel before securing the wheels using the collars
The fitted assembly
6
The horizontal stabilizer and the elevator assembly
1.
.
When installing the landing gear, make sure to insert the steering arm into the socket on the bottom of the rudder. Then secure the gear assembly using two wood screws
The general assembly
2.
.
To install the main landing gear onto the fuselage, fit it into the gear mounting saddle with the wheel pants facing towards the nose of the plane and secure it using four wood screws
2.
.
Snap the left stabilizer half into place and make sure that the elevator connector is properly in place on both halves before fully inserting the stabilizer into place
1.
.
Snap the horizontal stabilizer into place by inserting the right stabilizer half into the mounting slot first. Make sure to slide it all the way to the front and bottom of the slot
Install the horizontal stabilizer
1.
.
To install the aileron control rods, insert the Z-bend of the respective rod into the outermost hole of the servo horn and secure the rod using the provided clip. Then attach the other side of the rod to the swivel ball on the control surface horn
Install the landing gears
Install the wings
7
PA 2.3X10MM(2)
PA 2.3X10MM(4)
2.
.
To install the lower wing, key the mounting nose into the slot at the front of the wing mounting bay on the fuselage. Pull the servo cables through the hole in the fuselage into the receiver bay, then fully attach the wing to the fuselage, making sure the cables are not torn and/or prevent the wing from properly sitting in the wing mounting bay. Secure the wing using two wood screws
3. To install the interplane struts, use the strut with the“Arcus” logo on the right side and the strut with the“H.KING” logo on the left side. Use 4 wood screws provided for each strut to attach them to both wings
2.
.Note: You can wiggle the wing several times to makesure the wing is properly fitted into place.
Install the top wing by keying the screw mounting base in the socket on the bottom of the wing. Use two wood screws to secure it
8
PA 2.3X10MM(2)
PA 2.3X10MM(2)
PWA 2.3X8MM(4)
PWA 2.3X8MM(4)
1.
.
Connect the servo cables and the ESC cable to the receiver and secure the receiver with the Velcro tape. Slide the battery into the battery bay as shown in the picture
PREPARE FOR FLIGHT
1. Before getting started, bind your receiver to yourtransmitter. Please refers to your Transmitter Manualfor the operation procedures. Make sure all the control sticks are in neutral position(Rudder, elevator andailerons) and the throttle in the OFF position. Turn on the transmitter make sure all the trims and the sub trims(For computerized TX) are in neutral position, and then power on the ESC for the control system testing.
!!!Caution: To prevent personal injury, do not install the propeller onto the motor shaft in the process to bind your RX to your TX and to test all the control channels until the manual tell you to do it.
2. Move the sticks on the transmitter to make sure allof the surfaces are moving in right direction, please refer the following pictures. If the control surfaces deflect in the opposite directions , please reverse your control directions according the guide of Tx’s instruction. And then make sure the servo arms are moving proportional with the sticks to ensure the servo functions well.
Aileron: Bank Left
Aileron: Bank Right
Rudder: Yaw Left
Rudder: Yaw Right
Elevator: Climb
Elevator: Descend
Check the control direction(Mode 2)
The receiver and the battery department
9
1. Important ESC notification, make sure the throttle stick and the trim are in the lower position before connect the battery to the ESC to avoid the motor starts inadvertently.2. The motor and the ESC comes pre-connected, please make sure the motor rotates in the right direction. The motor on the Arcus should rotates counter clockwise from the front view. If incorrect swap any two of the three motor wires.
!!!Caution: To prevent personal injury, do not install the propeller onto the motor shaft in the processtesting the motor direction.
3. The motor has an optional brake setting, the brake of the ESC comes with the model has been programmedoff as we recommend the model to be flied with brakeoff. However, the brake could be accidently switched onif the motor battery is connected to the ESC whilst the throttle stick is set at full. To switch the brake off, Turn on the transmitter, push the throttle to the highest position,connect the battery to the ESC, then wait two seconds to enter the programming mode. The are two series of four beeps, pull the stick to the lowest position during the second four beeps. 4. Battery selection and configuration. We recommend the 11.1V 1P 25C 2200mAh to 2600mAh (180g-240g)Lipo battery. If using another battery, the battery must be at least a 11.1V 1P 25C
2200mAh to 2600mAh battery, your battery should be approximately the same capacity,weight and can even fit into the Arcus battery hatch.
1. Mechanically adjust the linkage rod to align the surface with the tails and the wing by turn the swivel ball linkage brackets before trimming and aligning. Align the ailerons and the elevator with the trailing edge of the wings and horizontal stabilizer and align the rudder with the vertical fin.
1. Connect one end of the interplane control rod to the swivel ball, turn the brackets and make sure the equal turns at both ends of the linkage. Then align the top wing ailerons well.
High rate Ailerons 20mm up/down 25%Expo Elevator 24mm up/down 25%Expo Rudder 16mm left/right 15 %Expo
2. We recommend to us a computerized TX or a TX with the dual rates configuration. Adjust ATV/Travel adjustment on your on your transmitter until you obtain the following control surface travel.
Ailerons
Operate the motor
Dual rates
Connect the ailerons
10
Rudder
!!!Caution: Disconnect the battery from the ESC before installing the propeller. Before testing the propeller, make sure the tail of the plane is firmly grippedon the ground and ensure there are no people or any other fragile objects in the range of the propeller.
1. Key the spinner backplate onto the hex nuts of the motor shaft.
2. Install the adaptor ring onto the shaft before installing the propeller to the motor shaft and make sure the dimension of the propeller towards the front of the plane.
3. Install the propeller holder.
4. Install the propeller fixer. Tighten the fixer by hand but make sure do not over tight it.
FLYING THE HK ARCUS
Note: The C.G. (Center of Gravity)is the location onthe wings, measured back from the most leading edge of the top wings on both sides of the fuselage, where the model balances. In addition to the control surfacethrows, the C.G. has a great effect on the way the model flies. If the C.G. is too far aft (tail heavy), the model will be too responsive and difficult to control.If the C.G. is too far forward (nose-heavy), the modelwill be too stable and not responsive enough. Follow the instructions to make sure the model is balanced properly and the C.G. is in the correct location.
1. The recommended C.G. location for your model is ( from the most leading edge of the top wing as the picture shows whilst with the batterypack installed.2.When balancing your model, support the plane on the relative point at the bottom of the top wing with you fingers or a commercially available balancing stand.
95-100mm/3 3/4-4in)
Install the propeller Check the C.G. (Center of Gravity)
Although the Arcus is an extremely plane made of durable foam, this biplane with four ailerons configuration make it more responsive but floating even with the low rate and is therefore not recommended for beginner pilots. But the plane is easy to fly for pilots with moderate experience, if you have notpreviously flown a pattern or a 3D plane but be familiar with other conventional plane it is strongly suggestedyou learn to fly with that one first.
11
Always choose a wide-open space for flying your plane. It is ideal for you to fly at a sanctioned flying field. If you are not flying at an approved site, always avoid flying nearhouses, trees, wires and buildings. You should also be careful to avoid flying in areas where there are many people, such as busy parks, schoolyards, or soccer fields. Consult laws and ordinances before choosing a location to fly your aircraft. After takeoff, gain some altitude. Climb to a safe altitude and begin to trim the model till it’s tracks well through all aspects of flight, including high speed passes, inverted flight, loops, and point rolls.
1. Land the model when you hear the motor pulsing (LVC) or if you notice a reduction in power. If using a transmitter with a timer, set the timer so you have enough flight time tomake several landing approaches.
2. Recharge the battery and repair the model as needed. The model’s three point landing gear allows the model to land on hard surfaces. Align model directly into the wind and fly down to the ground. Fly the airplane down to the ground using 1/4-1/3 throttle to keep enough energy for proper flare. Before the model touches down, always fully decrease the throttle to avoid damaging the propeller or other components. The key to a great landing is to manage the power and elevator all the way to the ground and set down lightly on the main landing gear. After a few flights you will find the model can be set down lightly on the mains and you can hold the tail wheel off balancing the model on the mains till it slows and gently settles the tail.
Repairs to the foam should be made with foam safeadhesives such as hot glue, foam safe CA, and 5 min epoxy. When parts are not repairable, see the Spare Parts List for ordering by item number. Always check to make sure all screws on the aircraft are tightened.
As a precaution, an operational ground range test should be performed before the first flight each time you go out. Performing a range test is a good way to detect problems that could cause loss of control such as low batteries, defective or damaged radio components, or radio interference. This usually requires an assistant and should be done at the actual flying site you will be using.
First turn on the transmitter, then install a fully-charged battery into the fuselage. Connect the battery andinstall the hatch.
Remember, use care not to bump the throttle stick, otherwise, the propeller will turn and possibly cause damage or injury.
Note: Please refer to your Transmitter Manual that came with your radio control system to perform a ground range check. If the controls are not working correctly or if anything seems wrong, do not fly the model until you correct the problem. Make certain all the servo wires are securely connected to the receiver and the transmitter batteries have a good connection.
Find a flying site clear of buildings, trees, power lines and other obstructions. Until you know how much area will be required and have mastered flying your plane in confined spaces, choose a site which is at least the size of two to three football fields – a flying field specifically for R/C planes is best. Never fly near people– especially children who can wander unpredictably.
Monitor and limit your flight time using a timer (such as one on a wrist watch or in your transmitter if available). When the batteries are getting low you will usually notice a performance drop before the ESC cuts off motor power, so when the plane starts flying slower you should land. Often (but not always) power can be briefly restored after the motor cuts off by holding the throttle stick all the way down for a few seconds.
To avoid an unexpected dead-stick landing on your first flight, set your timer to a conservative 4 minutes. When your alarm sounds you should land right away.When you learn how much flight time you are gettingyou can adjust your timer accordingly.
Find a suitable flying site
Perform a range check
Monitor your flight time
Take off
Until you have become comfortable with flying yourArcus , do not fly if the wind speed is greater than10mph.
One final check before takeoff: always double-check the flight control response to your inputs from the transmitter before every flight. Be sure the ailerons, elevator and rudder respond correctly and that none of the controls have inadvertently become reversed.
And make sure the spinner and the propeller are firmly in place before every flight.
Place the model on your “runway” with the nose pointing into the wind-this will reduce the speed that must be reached and automatically provide the assist for the take off, make the takeoff and steering easier. Slowly advance the throttle, adding rudder correction as needed to keep the model rolling straight. When the plane becomes light continue to apply throttle until you are at full-power, all this will happen in a few seconds. When sufficient liftoff speed has been reached gradually and slowly apply up elevator, allowing the model to leave the ground.
Flying
Landing
Note: If during a rough landing, the propeller become stuck and cannot rotate, the battery and the ESC will become very hot. Immediately move the throttle down to cease the power input, if you fail to do so, the motoror the ESC may be damaged.
After flight
12
TROUBLESHOOTING
Extra propeller noiseor extra Vibration.
Reduced flight time oraircraft underpowered.
Control surface does not move, or is slow to respond to controlinputs.
Controls reversed.
- Motor loses power.- Motor power pulsesthen motor loses power.
LED on receiver flashes slowly.
- Damaged spinner, propeller, motor, or motor mount.- Loose propeller and spinner parts.- Propellor installed backwards.
- Replace or repair damaged parts and adjust controls.- Do a check of connections for loose wiring.
Do the Control Direction Test and adjust controlsfor aircraft and transmitter.
- Do a check of batteries, transmitter, receiver, ESC, motor and wiring for damage (replace as needed).- Land aircraft immediately and Recharge flight battery.
- Check connection from ESC toreceiver.- Check servos for damage.- Check linkages for binding.
