SkyArtec MOSQUITO 3D PRO User manual

MOSQUITO 3D PRO - INSTRUCTION MANUAL
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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

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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

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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 ma-
nufactuere 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 acci-
dents. 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 mo-
tor,DONOTALLOWMAINBLADESTOEXCEED3000RPM.Neitherrotorheadmechanicsnorrotorbladswillwithstand
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 num-
bered 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.

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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) haveto 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 ro-
tor 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 therotor bladeholder (1).Then con-
nect the translation lever (11) with the
mounted pitchconnectors(9). Makesure
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.Afterwardsmount the transla-
tion levers (11) with the screws to the
seesaw holder (12). Shove the rotating
frame (10) over the seesaw holder (12).

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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 bla-
des (15) at both ends of the balance
bar (14) and mount the fixing screws.
Make sure the blades are aligned in
oneleveltoeach other and torotating
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).
Mountthefrontsupport(20)ontothe
lowermainframe(21).Mountbottom
main bearing (22) into the lowe main
frame (21). Mount tail support (23)
onto the lower main frame (21). Final-
ly mount battery holder (19) with the
two screws to the lower main frame
(21).

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STEP 6 - Lower body
STEP 7 - Tail rotor - open BAG 6
STEP 8 - Tail rotor frame - open BAG 7
Mount the preassembled landing gear
fromstep 4 ontothe preassembledlower
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
showntotherotorholders (26).Setin the
tail axis holding screw into the center pie-
ce (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
thebelt (36) witha cord ora wirethrough
the tail boom (48). Set the prepared tail
boom into the prepared tail frame 1 (29).
Takecare thatbefore mounting tailframe
2 (34) that the belt is in the correct posi-
tion. 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.

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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 preas-
sembled 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 servoholders(46),andtail boom
holder (47) in the order as shown. Mount
all screws as shown, but do not tighten
them now.

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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 up-
per 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). After-
wards mount the preassembled servo
support (50) with three screws to the up-
per 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 fra-
me (50).
Mount the main gear holder (59) to the
main gear (60) with three screws. Mount
the inner spacer (61) and one way bea-
ring (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
mainaxis bolt(58).Finallymount themain
axisto thepreassembled lowerbody from
step 6.
Align the preassembled tail boom from
step10 and thebelt onto themain axis.In
the next step the tail boom will be scre-
wed to the main frame so make sure that
the belt is not twisted inside the tail boom
and that main and tail rotor rotating di-
rections are correct.

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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
fromstep12.Mount the motor pinion
(66) to the motor (64). Afterwards
mount the motor (64) with two
screws by using the two motor spa-
cers (65).Finally mount the retaining
ring (67) with the screw. Make sure
that the axis is fixed through the retai-
ning 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
fromstep 14. Put the rotorheadfixing
ring (49) and the the O-stabilizer (68)
together with the rotorhead from
step 3 onto the axis and fix the rotor-
head 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 con-
nect the swashplate with the rotor-
head as shown.

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STEP 17 - Collective pitch connector mount
STEP 18 - Servo mount
Modify servos
Connect the pitch connectors (72) as
shown to the swashplate and the in-
ner ball links of the translation levers
(11). (Picture doesn´t show the rota-
ting 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 equip-
ment the servos will be in their center po-
sition. 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“).
Leavetheservos incenterposition forthe
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).

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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 pu-
shrods (74+73) into the servo arm and
connectthe otherendwith theballslink 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
usingthescrews. Makesurethat both ro-
torblades are equally tight holded by the
screw. To do so after mounting the rotor-
blades straighten them, put the helicop-
ter 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.

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STEP 21 - Tail servo mount - open BAG 16
STEP 22 - Tail support mount
End of mechanical kit assembly
Mountthetail servowith the servoho-
ling 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. Even-
tually 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); after-
wards 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 thigh-
ten its holgind screws. You can use
hot glue or component glue to fix the
bars into both ends supports (recom-
mended for 3D flights).

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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 dia-
gram 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 mi-
nutes to test everything as shown. Time spent becoming familiar
with the equipment and testing all the components can prevent dif-
ficulty.
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 con-
nected and the transmitter is turned on, follwo this step-by-step
process to check your equipment.
STEP by STEP component test:
1.Turnon the transmitter testif the transmitterisfunctioningnor-
mally. Make sure you fixed the helicopter so it won’tbe 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
suretheservoswork.Withthegyroconnectedproperlytherudder
servo should move when turning the helicopter.

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6. Complete mechanic overview

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7. Spareparts - I

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8. Spareparts - II

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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
M-10 rotor head holding set 1x part 68, 1x part 69, 1x part 49, 1x screw 2x6mm
M-11 linkage rod set 2x part 9, 2x part 71, 2x part 72, 3x part 73, 3x part 74
M-12 ccpm servo support set 2x part 54, 1x part 51, 1x part 50, 3x screw 2x5mm
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
M-25 one way bearing set 1x part 59, 1x part 61, 1x part 62, 3x screw 2x5mm
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
M-28 landing gear set 4x part 17, 2x part 16, 2x part 18, 4x screw 2x4mm
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

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10. Spareparts as in mechanical overview
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
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

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12. Additional information about helicopter mechanics.
Your MOSQUITO 3D PRO is a full F3C cabaple helicopter. But it depends on the user and its adju-
stment 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 ba-
lance 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 thecenter position - the pitch is at 0°. If youusea 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 re-
peatedly 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
alsoenlargeslightly.Thereforea coldbelt hastobetensioned alittlemore thanawarm 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 toothight,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)

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Mounted helicopter views (electrical parts not included in set)
Brushless motor mount
CCPM swashplate
Tail servo mount
Tail rotor Main axis view