SKYARTEC MOSQUITO 3D PRO Instruction & assembly manual Specifications: This micro R/C helicopter has the most advanced capabilities. 120 degree CCPM control, collective main and tail rotors, belt tail drive and brushless motor ensure top performance. MAX MAIN ROTOR RPM: 3000 MOTOR: SKYARTEC 4100KV MAIN ROTOR DIAMETER: 520mm LENGTH: 485mm WEIGHT: 360-380g RTF SKYARTEC USA, INC. copyright September 2006. All rights reserved. SKYARTEC USA, INC. 18107 Valley Blvd. City of Industry, CA 97144 www.skyartec.com page -1-
TABLE OF CONTENTS 1. Introduction 3 2. Gerneral information 3 3. Required items 3 4. Assembly instruction 4 5. Connection and diagnostics for the electronic components 13 6. Complete mechanical overview 14 7. Spareparts I 15 8. Spareparts II 16 9. Spareparts III & detail description 17 10. Spareparts as in mecanical overview 18 11. Canopy decals 11 13. Additional information about helicopter mechanics 20 page -2-
1. Introduction Congratulations on the purchase of SKYARTEC s Helicopter MOSQUITO 3D PRO. The MOSQUITO 3D PRO is ideal for beginners, intermediate and expert pilots looking for a small size full 3D capable helicopter. The MOSQUITO requires a 6 channel computer radio that supports 120 degree CCPM operation. Please check with your favorite retailer or manufactuere ro verify compatibility of your radio system of choice. 2. General information WARNING! This radio controlled model is not a toy! It is a precision machine requiring proper assembly an dsetup to avoid accidents. It is the responsibility of the owner to operate this product in a safe manner as it can inflict serious injury. The helicopter is unassembled and require following the assembly steps as shown in this manual tu ensure a proper flight. As the manufacturer, we assume no liability for the use of this product. Rules of R/C -Always turn your transmitter on before powering the model. -Always turn off the model by disconnecting the helicopter battery prior to turning off the transmitter. -Always start the helicopter with throttle in the low position. -Always perform a pre-flight inspection for safe operation. Attention! If you purchased your MOSQUITO without SKYARTEC 4100KV motor and are going to mount any other brushless motor, DO NOT ALLOW MAIN BLADES TO EXCEED 3000RPM. Neither rotorhead mechanics nor rotorblads will withstand rotary forces above 3000RPM. 3. Required items Items needed to fly the MOSQUITO 1x Radio 6 channel 1x Receiver 6 channel 4x Micro servos 1x Micro gyro 1x Brushless motor 4100RPM/Volt 1x Brushless speed controller 25A+ with BEC 1x Battery 11.1 V LI-ION or LIPO 1x Battery charger LI-ION or LIPO Items needed to assemble the MOSQUITO 1x Set of screwdrivers 1x Screw locking glue (e.g. Threadlock) 1x hobby cutting knife Before assembling your MSOQUITO, please mind that the parts are prepacked into several bags. These bags are numbered and are to be opened as displayed in section 4 in order to ease the assembly steps. Some of the spareparts, such as aluminium parts or main rotor blades are not inside those bags but single packed. page -3-
4. Assembly instruction The set contains various labeled bags in order to simplify assembling steps. Please open the bags step by step in order to ease the assembly. Bags are marked S-1 to S- 18 according to the assembly steps. STEP 1 - Rotor blade holder - open BAG 1 STEP 2 - Pitch compensator- open BAG 2 Rotor blade holder (1), pitch bearing (4+5), spacer (6) and o-ring (7) have to be assembled to the one end of the pitch axis (8). Add the screw-lock glue before mounting the screw as shown. After assembling those parts to the one end, push the axis through the rotor head (2) and assebmle the other side of the rotor holder. Use two screwdrivers to tighten the holding screws. Finally mount the top (3) to the rotor head. Take the preassembled rotor head from step 1 and mount the pitch connectors (9) to the rotor blade holder (1). Then connect the translation lever (11) with the mounted pitch connectors (9). Make sure to mount them onto the ball link at the middle of the lever. Afterwards mount the balance piece (13) into the rotorhead (2) and screw the seesaw holder (12) to the rotorhead. Afterwards mount the translation levers (11) with the screws to the seesaw holder (12). Shove the rotating frame (10) over the seesaw holder (12). page -4-
STEP 3 - Steering blades - open BAG 3 STEP 4 - Landing gear - open BAG 4 STEP 5 - Lower main frame - open BAG 5 Mount the balance bar (14) centerd into the preassembled rotor head from step 2 and secure it with the screw on both sides of the rotor head. Afterwards mount the steering blades (15) at both ends of the balance bar (14) and mount the fixing screws. Make sure the blades are aligned in one level to each other and to rotating frame (10). Mount the landing bars (16) into the the landing gear (18). Set in the four screws which hold its position, but do not tighten them until mounting the entire gear onto the main body later on. Mount the four tip-ends (16) into the bars ends (16). Mount the front support (20) onto the lower main frame (21). Mount bottom main bearing (22) into the lowe main frame (21). Mount tail support (23) onto the lower main frame (21). Finally mount battery holder (19) with the two screws to the lower main frame (21). page -5-
STEP 6 - Lower body STEP 7 - Tail rotor - open BAG 6 STEP 8 - Tail rotor frame - open BAG 7 Mount the preassembled landing gear from step 4 onto the preassembled lower main frame from step 5. Mount the four holding screws as shown in the picture. Center the landing bars (16) between the two landing gears (18). Fix the previously set in landig-bar holding screws. Mount both tail pitch levers (25) to both tail rotor holders (26) as shown. Mount one tail rotor holder and bearing (27) to the tail rotor centerpiece (24) by using the screw-lock glue. Afterwards mount the other side the same way, also using the screw-lock glue. Finally mount the tail rotor blades (28) as shown to the rotor holders (26). Set in the tail axis holding screw into the center piece (24), but do not thighten it now. Mount bearing (30A) into tail frame 1 (29) and the other bearing (30B) into tail frame 2 (34). Set tail axis (33+32) and the tail belt guide roller (31) and the roller bearing (37) into tail frame 1 (29). Pull the belt (36) with a cord or a wire through the tail boom (48). Set the prepared tail boom into the prepared tail frame 1 (29). Take care that before mounting tail frame 2 (34) that the belt is in the correct position. Put both tail frame parts together and mount the three screws. Afterwards mount the tail fin (35) with two screws. Make sure that while thighten them the tail boom is in its correct position. page -6-
STEP 9 - Tail rotor competion - open BAG 8 STEP 10 - Tail boom support - open BAG 9 Mount the bolt (39) into the pitch shifter (38). Mount the pitch shifter (38) to the preassembled tail rotor from step 7 by using the bolts (43). Shove the preassembled tail rotor from step 7 over the tail axis (33) until ithe centerpiece (24) is aligned with the axis s end. Lock the tail axis with previously set in screw at the centerpiece (24). Mount the ball link (42) to the L-lever (40). Mount the L-lever (40) using the L-lever spacer (41) to the tail frame from step 8 and also over the bolt (39). Mount to the other end of the tail boom (48) the tail rod guides (44), cross wing (45), tail servo holders (46), and tail boom holder (47) in the order as shown. Mount all screws as shown, but do not tighten them now. page -7-
STEP 11 - Upper main frame - open BAG 10 STEP 12 - Main axis - open BAG 11 STEP 13 - Mount tail boom Mount the motor support (52) to the upper main frame (55) with two screws. Then mount the swashplate support (51) and the upper bearing (54A) to the servo support (50). Mount the middle bearing (54B) into the servo support (50). Afterwards mount the preassembled servo support (50) with three screws to the upper main frame (55). Finally mount the two belt guide rollers (53) and the bearings (XX) by using screw lock glue as shown to the upper main frame (50). Mount the main gear holder (59) to the main gear (60) with three screws. Mount the inner spacer (61) and one way bearing (62) into the main gear holder (59). Afterwards mount the complete main gear by using the main axis bolt (63) to the main axis (56). Mount the belt gear (57) to the main axis (56) using another main axis bolt (58). Finally mount the main axis to the preassembled lower body from step 6. Align the preassembled tail boom from step 10 and the belt onto the main axis. In the next step the tail boom will be screwed to the main frame so make sure that the belt is not twisted inside the tail boom and that main and tail rotor rotating directions are correct. page -8-
STEP 14 - Main frame mount - open BAG 12 STEP 15 - Rotor head mount - open BAG 13 STEP 16 - Cyclic control connectors - open BAG 14 Mount the preassembled upper main frame from step 11 and the tail boom with two screws to the lower body from step 12. Mount the motor pinion (66) to the motor (64). Afterwards mount the motor (64) with two screws by using the two motor spacers (65).Finally mount the retaining ring (67) with the screw. Make sure that the axis is fixed through the retaining ring and that there is no game at the main axis in the axial direction. Mount the swashplate (70) to the main axis of the preassembled body from step 14. Put the rotorhead fixing ring (49) and the the O-stabilizer (68) together with the rotorhead from step 3 onto the axis and fix the rotorhead from step 2 with the main axis bolt (69) and tighten the fixing ring (49) screw. Use the steering connectors (71) by passing them through (69) to connect the swashplate with the rotorhead as shown. page -9-
STEP 17 - Collective pitch connector mount STEP 18 - Servo mount Modify servos Connect the pitch connectors (72) as shown to the swashplate and the inner ball links of the translation levers (11). (Picture doesn t show the rotating frame in order to easy the view) Mount the servos as shown on the picture with a double side adhesive foam tape. A long half servo arm may have to be created by cutting a full or cross arm. After testing the radio equipment the servos will be in their center position. Remove the servo retaining screw and the orignial servo arm. Replace the original arm with one of the long half arms. Some servo arms require widening the hole in the arm in order for them to accept the Mosquitos pushrods (74) using a #55 drill bit (1.34mm or 0.052 ). Leave the servos in center position for the following step. 1&2 Trim both servo mounting flanges from each of the three servos. Before installing your will need to remove the pushrods form the swashplate of the helicopter. Keep the pushrods on the side until you install the correct servo arms (next step). page -10-
STEP 19 - Pushrod mounting STEP 20 - Rotor blade mount - open BAG 15 Premount the pushrods (74+73) by screwing the metal rod (74) into the to the ball link connectors (73). You may need to widen the ball link connectors (73) tip a little in order to ease the metal rod (74) mounting by using a cutting knive. Turn it a little inside the mounting hole to widen it. After mount the three pushrods (74+73) into the servo arm and connect the other end with the balls link of the swashplate (70). Make sure that all connectors are at the same length and that the centered servo arm position will also center the swashplate s travel from high to low pitch position. Mount the main rotor blades (75) by using the screws. Make sure that both rotorblades are equally tight holded by the screw. To do so after mounting the rotorblades straighten them, put the helicopter to the floor and fold both rotorblades towards you. Check if the main axis itself will turn in any direction. If so, adjust the rotor blade holding screws tightness until folding both rotorblades will not force the main axis to turn in any way. page -11-
STEP 21 - Tail servo mount - open BAG 16 STEP 22 - Tail support mount End of mechanical kit assembly Mount the tail servo with the servo holing screws (not included in this kit) as shown to the servo holders (46). Use mount the ball link (78) to the servo arm as shown. Mount the two ball link connectors (77) to both ends of the tail servo rod (76). Connect the tail servo rods ends with the ball links at the servo and at the tail frame. Eventually adjust the position of the servo holders (46), so that the center tail servo position will result in the center position of the pitch shifter (38); afterwards thighten the servo holder screws. Finally clip the tail servo rod (76) into the two tail rod guides. Mount both tail support bars (79) as shown. Align the crosswing and thighten its holgind screws. You can use hot glue or component glue to fix the bars into both ends supports (recommended for 3D flights). page -12-
5. Connection and diagnostics for the electronic components This diagram represents the overall connections for wiring the MOSQUITO correctly (if using Futaba or Hitec). This diagram includes the separate connections pictured in the follwing page. Testing and preparation of radio equipment Please don t skip this section!! Before modifying or installing any radio gear, plase take a few minutes to test everything as shown. Time spent becoming familiar with the equipment and testing all the components can prevent difficulty. 1. Intall the crystals into the transmitter and receiver. Be certain that the channel frequency matches. 2. Note that all electroincs plug into the receiver with the wires as pictured (orange wire faces receiver label). Follow the diagram for each electronic connection. Once the electronics system is connected and the transmitter is turned on, follwo this step-by-step process to check your equipment. STEP by STEP component test: 1. Turn on the transmitter test if the transmitter is functioning normally. Make sure you fixed the helicopter so it won t be able to take off in any case of malfunction. Mind your hands when you connect the battery! 2.Plug the battery into your speed controller. Wait for the speed controller and gyro to initialize before moving the helicopter. 3. Move the aileron, elevator pitch and rudder channels to make sure the servos work. With the gyro connected properly the rudder servo should move when turning the helicopter. page -13-
6. Complete mechanic overview page -14-
7. Spareparts - I page -15-
8. Spareparts - II page -16-
9. Spareparts III and detail description set - no set description parts included M-01 mosquito canopy 1x part 79 M-02 mosquito decal set 1x part 80 M-03 main rotor blades 2x part 75, 2x screw 2x10mm M-04 flybar paddle 2x part 15, 2x screw 2x5mm M-05 tail rotor blade 2x part 28 M-06 main rotor holder 4x part 1 M-07 main rotor holder set 2x part 1, 2x part 5, 2x part 4, 2x part 6, 2x screw 2x6mm M-08 main rotor center set 1x part 2, 2x part 7, 2x part 8, 1x part 3, 1x screw 2x4mm M-09 mixing arm set 1x part 13, 1x part 12, 1x part 10, 2x part 11, 2x screw 2x4mm, 2x screw 2x4mm, 2x screw 3x3mm 1x part 68, 1x part 69, 1x part 49, 1x screw 2x6mm M-10 rotor head holding set 2x part 9, 2x part 71, 2x part 72, 3x part 73, 3x part 74 M-11 linkage rod set 2x part 54, 1x part 51, 1x part 50, 3x screw 2x5mm M-12 ccpm servo support set M-13 lower main frame set 1x part 23, 1x part 22, 1x part 21, 1x part 20, 1x part 19, 4x screw 2x10mm, 2x screw 2x4mm M-14 upper main frame set 1x part 47, 1x part 52, 1x part 55, 1x screw 2x10mm, 2x screw 2x8mm, 1x nut M2 M-15 tail rotor frame set 1x part 29, 1x part 34, 1x part 31, 1x part 37, 5x screw 2x12mm M-16 tail pitch shifter set 2x part 43, 1x part 38, 1x part 39, 1x part 40, 1x part 41, 1x part 42, 1x screw 2x10mm, 1x nut M2 M-17 tail rotor holder set 1x part 24, 2x part 25, 2x part 26, 2x part 27,2x screw 2x4mm, 1x screw 3x3mm, 2x screw 2x8mm, 2x screw 2x8mm M-18 main rotor pitch shaft set 3x part 8, 6x part 7 M-19 swashplate 1x part 70 M-20 motor mount set 2x part 65, 2x screw 3x16mm M-21 main shaft set 2x part 56, 1x part 67, 1x screw 3x3mm M-22 main shaft gear set 1x part 60, 1x part 57 M-23 main shaft bolt set 5x part 63 (equal 58) M-24 main gear 1x part 60 1x part 59, 1x part 61, 1x part 62, 3x screw 2x5mm M-25 one way bearing set M-26 tail belt drive set 2x part 53, 1x part 57, 1x part 58, 2x screw 2x12mm, 2x nut M2 M-27 landing gear 2x part 18, 4x screw 2x4mm 4x part 17, 2x part 16, 2x part 18, 4x screw 2x4mm M-28 landing gear set M-29 tail boom set 2x part 48, 2x part 46, 2x screw 2x8mm M-30 tail boom brace 2x part 78 M-31 tail linkage set 4x part 77, 2x part 76, 1x part 42 M-32 stabilizer wing set 1x part 35, 2x part 44, 1x part 45, 1x screw 2x10mm, 1x nut M2 M-33 flybar rod 2x part 14 M-34 tail shaft set 3x part 33, 1x part 32 M-35 tail shaft bearing set 2x part 30, 1x part 33, 1xpart 32 M-36 motor 1x motor 64 M-37 gear set 3x gear 66, (8T, 9T, 10T) M-38 tail belt 1x part 36 page -17-
10. Spareparts as in mechanical overview No Description No Description No Description No Description 1 rotor blade holder 21 lower main frame 41 L-lever spacer 61 inner spacer 2 rotor head 22 bottom main bearing 42 ball link 62 one way bearing 3 top 23 tail support 43 bolt 63 bolt 4 pitch bearing 24 tail rotor centerpiece 44 tail rod guides 64 motor 5 pitch bearing 25 tail pitch lever 45 cross wing 65 motor spacer 6 spacer 26 tail rotor holder 46 tail servo holder 66 motor pinion 7 o-ring 27 bearing 47 tail boom holder 67 retaining ring 8 pitch axis 28 tail rotor blade 48 tail boom 68 O-stabilizer 9 pitch connectors 29 tail frame 1 49 rotorhead fixing ring 69 bolt 10 rotating frame 30 bearing 50 servo support 70 swashplate 11 translation lever 31 tail belt guide roller 51 swashplate support 71 steering connector 12 seesaw holder 32 tail axis gear 52 motor support 72 pitch connector 13 balance piece 33 tail axis 53 belt guide roller 73 ball link connector 14 balance bar 34 tail frame 2 54 bearing 74 pushrod 15 steering blades 35 tail fin 55 upper main frame 75 main rotor blades 16 landing bars 36 belt 56 main axis 76 tail servo rod 17 tip-ends 37 roller bearing 57 belt gear 77 ball link connector 18 landing gear 38 pitch shifter 58 bolt 78 ball link 19 battery holder 39 bolt 59 main gear holder 79 tail support bar 20 front support 40 L-lever 60 main gear 11. Canopy decals Your MOSQUITO 3D pro comes along with a PVC canopy and a decal set. There are two stickers to be placed onto the tail boom wings, the other stickers serve for the Canopy. The stickers should be mounted as shown in the following picture page -18-
12. Additional information about helicopter mechanics. Your MOSQUITO 3D PRO is a full F3C cabaple helicopter. But it depends on the user and its adjustment abilities to gain a maximum performance and long spareparts lifetime. In the following we provide some useful informations about above mentionend. A - Tight screws: As a helicopter depends like any flying object on proper mechanic funtion, you should make sure before each flight that it s screws are tightened. The most important places are where most forces stress the connection such as the rotorhead, motor, belt drive and tail frame screws. If a screw which is fitted into the plastic parts is overtightened, please exchange that sparepart. B - Balance main rotor blades: As any machince produced rotor blade will slightly differ in weight and lentgh it is necessary to balance the blades. You might use a so called rotor blade balance, but a long screw, two washers and nuts do it as well. Mount both blades directly to each other, straighten them and place the long screw ends onto a U shaped item, so that the blades can freely swing. One of the two blades will now, as it is more heavy than the other, swing downwards. To compensate the misbalance just add small stripes of tape at the outer end of the lighter rotor blade. C - Main rotor pitch You will need to buy a pitch gauge in order to check the pitc. There are some carton shapes to cut out on the internet, but thats not really working out. Mount the pitch gauge and make sure that - when the three servos are in the center position - the pitch is at 0. If you use a computer radio, you can adjust the pitch through the radio. In any other case - the hover pitch is to be adjusted around 9, depending on the battery + electronics weight you mounted to the MOSQUITO. D - Main rotor blades tracking: As the pitch of both rotor blades is changeable through the CCPM mechanic it is really necessary that their track (or parallel pitch) is equalized. In order to adjust the tracking (thats to be done by adjusting one of the two pitch connectors (9) ) it is necessary to slowly rotate the blades. Before doing that, make sure that there is one of the rotorblades marked with a colored tape near the tip of the rotorblade. While letting them rotate at slow speed you need to look directly into the rotation layer (wear eye protection glasses!). You will see now if the white-color-white flickering (as you repeatedly see the colored and the uncolored blade) will match in its position or not. If not, adjust the rotorblade s pitch connector until you reach a satisfatory result. C - Tail belt tensioning The MOSQUITO s tail belt is fibre-reinforced in order to withstand the forces. A long service life is only guaranteed if the belt s tension is properly adjusted. As the belt will warm up while flying, it will also enlarge slightly. Therefore a cold belt has to be tensioned a little more than a warm one. Please check the tension at the guide rollers (53) by pressing with your finger on it. You shouldn t be able to push it more than 3mm away from that guide roller. Please also check the state of your belt for missing teeth or other damages regularly and replace it. D - Gear spacing It is important to have the gear mesh (teeth) set correctly. If it mesh too thight, it will rob power and may overheat the motor. If it is too loose, it will probalby strip the gears. A good way of setting gear mesh is to insert some very thin paper between pinoin and spur gear as you tighten the motor mount screws. (See picture) page -19-
Mounted helicopter views (electrical parts not included in set) CCPM swashplate Brushless motor mount Tail servo mount Tail rotor Main axis view page -20-