Mikado LOGO 20 User manual

© Mikado Modellhubschrauber, V2.0
www.mikado-heli.de
Mikado Modellhubschrauber • Friedrich-Klausing-Straße 2 • 14469 Potsdam • Germany
Phone +49 (0)331 23749-0 • Fax +49 (0)331 23749-11 • www.mikado-heli.de
LOGO 20
Manual

Manual
LOGO 20
Page2 ©MikadoModellhubschrauber
Index
All parts shown in the boxes are displayed in real size.
1 Main Frame .........................................5
1.1 Motorplate 5
1.2 Elevator Lever 6
1.3 Motorplate 6
1.4 Bearing Case for Main Shaft 7
2 Landing Gear...................................... 8
3 Motor Installation ...............................9
4 Main Gear ..........................................10
4.1 Main Gear Hub 10
4.2 Main Rotor Shaft 11
4.3 Adjusting Gear Backlash 13
5 RC Support .......................................14
5.1 Battery Fixing Rings14
5.2 RC Support14
5.3 Servo Tray 15
5.4 Front Battery Fixing Rings 15
5.5 Frame 16
6 Wash-Out ...........................................17
7 Swashplate .......................................18
8 Preparation for Servo Installation .19
8.1 Servo Arms 19
8.2 Servo Centering 19
8.3 Elevator and Aileron Servos (2x) 20
8.4 Tail Servo 20
9 Aileron Lever ....................................21
10 Control Rods ..................................22
10.1 Length of Control Rods 22
10.2 Elevator and Aileron Linkages 22
11 Swashplate Guide Bracket...........24
12 Installation of Wash-Out Hub .......24
13 Main Frame without Rotor Head..25
14 Tail Rotor .........................................26
14.1 Tail Rotor Shaft 26
14.2 Vertical Fin 27
14.3 Tail Pitch Slider 28
14.4 Tail Rotor Lever 29
14.5 Tail Rotor Hub 30
15 Tail ....................................................31
15.1 Tail Boom Assembly 31
15.2 Tail Boom Holder 32
15.3 Tail Drive Pulley 33
15.4 Control Rods 34
15.5 Tail Assembly 35
15.6 Tail Rotor Blades 36
15.7 Horizontal Fin 36
15.8 Tail Support 37
16 Finished Main Frame.....................38
17 Main Rotor Head ............................39
17.1 Blade Grips 39
17.2 Mixing Arms 39
17.3 Yoke 40
17.4 Seesaw 41
17.5 Flybar Control Bridge 42
17.6 Flybar 43
17.7 Flybar Paddles 44
17.8 Final Assembly 45
17.9 Rotor Head Linkage 46
17.10 LOGO 20 Finished 48
18 RC Installation................................49
19 Decals..............................................51
20 How to Avoid Interference ............52
21 RC Programming ...........................53
22 Rotor Blades...................................60
22.1 Balancing of Rotor Blades 60
22.2 Static Balancing 60
23 Final Pre-Flight Check ..................61
23.1 Direction of Main and Tail Rotation 61
23.2 Blade Tracking Adjustment 61
24 Control Movements.......................62
24.1 Pitch/Throttle 62
24.2 Rotor Head 62
24.3 Elevator 63
24.4 Aileron 63
25 Overview .........................................64
25.1 Chassis 64
25.2 Rotor Head 65
25.3 Tail Boom/Tail Rotor 65
26 Tuning/Accessories.......................66

Manual
LOGO 20
Page3 ©MikadoModellhubschrauber
Safety Instructions
OPERATING YOUR MODEL SAFELY
Operate the helicopter in spacious areas with no people nearby.
!Warning: Do NOT operate the helicopter in the following places and situations
(or else you risk severe accidents):
• in places where children gather or people pass through
• in residential areas and parks
• indoors and in limited space
• in windy weather or when there is any rain, snow, fog or other precipitation
If you do not observe these instructions you may be held reliable for personal injury or property damage!
Always check the R/C system prior to operating your helicopter.
When the R/C system batteries get weaker, the operational range of the R/C system decreases. Note that you
may lose control of your model when operating it under such conditions.
Keep in mind that other people around you might also be operating a R/C model.
Never use a frequency which someone else is using at the same time. Radio signals will be mixed and you will
lose control of your model.
If the model shows irregular behavior, bring the model to a halt immediately. Turn off all power switches and
disconnectthebatteries.Investigatethe reason and fix theproblem.Donotoperatethemodel again as long asthe
problem is not solved, as this may lead to further trouble and unforeseen accidents.
!Warning: In order to prevent accidents and personal injury, be sure to observe the following:
Before flying the helicopter,ensurethatallscrewsare tightened.Asingleloosescrew maycause a major accident.
Replace all broken or defective parts with new ones, as damaged parts lead to crashes.
Never approach a spinning rotor. Keep at least 10 meters/yards away from a spinning rotor blades.
Do not touch the motor immediately after use. It may be hot enough to cause burns.
Perform all necessary maintenance.
PRIOR TO ADJUSTING AND OPERATING YOUR MODEL, OBSERVE THE FOLLOWING
!Warning: Operate the helicopter only outdoors and out of people’s reach as the main rotor operates at high rpm!
!Warning: While adjusting, stand at least 10 meters/yards away from the helicopter!
Novice R/C helicopter pilots should always seek advice from experienced pilots to obtain hints with assembly
and for pre-flight adjustments. Note that a badly assembled or insufficiently adjusted helicopter is a safety hazard!
In the beginning, novice R/C helicopter pilots should always be assisted by an experienced pilot and never fly
alone!
Throttle channel should be in motor OFF position while powering up.
When switching the R/C system ON or OFF, always proceed in the following order:
When switching ON:
• Position the throttle control stick (on transmitter) to a position where the LOGO 10 motor does not operate.
•Turn on the transmitter.
• Turn on the receiver.
• Connect the motor battery.
• Operate your model.
When switching OFF:
• Turn off the motor (move throttle control to a position where motor does not operate).
• Wait until the rotor head has stopped spinning.
• Disconnect the motor battery.
• Turn off receiver.
•Turn off transmitter.

Manual
LOGO 20
Page4 ©MikadoModellhubschrauber
Tools for Assembly & R/C Equipment
Scissors
Rubber Hammer
Drill with
1.5mm bit
(.059 in)
Marker
Screwdrivers
(plus and minus)
Hex Wrenches
1.5/2.0/2.5/3.0mm
(.055/.079/.098/.118in)
Radio with Heli-Software
4x Servos
Receiver Battery
(Sanyo AR500)
Battery (Sanyo RC2400 or Sanyo 3000 NiMH)
Receiver (Graupner DS 19
or SMC 19 SPCM)
Gyro (Futaba GY240
or GY401)
Fast Charger (Schulze isl 6-330d or isl 6-636+)
Motor + Speed Controller (check the Mikado
webpages for recommended motors)
Alle shown products are examples.You may use different brands.
Ball link pliers
Threadlock
Pitch Gauge

Manual
LOGO 20
Page5 ©MikadoModellhubschrauber
#2379
1x 10x19x5 #1329
6x M3 #2072
1 Main Frame
1.1 Motorplate
Bag 1 • Bag 10

Manual
LOGO 20
Page6 ©MikadoModellhubschrauber
2x 4x8x3 mm #2397
2x Ø4,8 mm #1570
1x M2x8 #1902
1x M2x10 #1911
4x M3x10 #1953
2x M3x14 #1955
#2379
#2375
#2394
#2376
#1570
#1570
1 Main Frame
1.2 Elevator Lever
Bag 1 • Bag 10 • Bag 12
1.3 Motor Plate
Bag 1 • Bag 12
Choose correct
countersunkscrew

Manual
LOGO 20
Page7 ©MikadoModellhubschrauber
2x 19 mm #2370
4x M3x12 #1954
#2381
1 Main Frame
1.3 Bearing Case for Main Shaft
Bag 1 • Bag 12

Manual
LOGO 20
Page8 ©MikadoModellhubschrauber
#2495
#2496
4x M3x14 #1955
4x M3 #2074
4x 3x7x0,5 #2012
2 Landing Gear
Bag 8 • Bag 12
Align the skids and secure them
with superglue.

Manual
LOGO 20
Page9 ©MikadoModellhubschrauber
2x M3 #2072
2x M3x8 #1915
2x M3x12 #1964
2x 3x7x0,5 #2012
#2499
3 Motor Installation
3 Motor Installation
Bag 1• Bag 12
Someelectricmotors are construc-
ted such that they cannot be moved
alongthemotorplate.Ifyouareusing
one of these motors, please use the
motoradaptorplate#2499.Theplate
is not needed for Hacker motors.
Please check from the Mikado
website which pinion works best with
the motorset you have (on the Mika-
dowebpagego toLOGO10 andclick
“Motorization”). When a wrong pini-
on is used, the performance of your
electrichelicopterwill deteriorate and
the motor or speed controller can be
damaged.
Do not tighten the set screw fully
untilthefinalpositionofthepinionon
the motor shaft is determined.This is
done after installing the main gear.
There are two options for attaching
thepinion:
1. For securing the pinion, you may
flatten the motor shaft where the set
screwmeetsthe motorshaft-without
making a flat surface on the motor
shaft.
2. Alternatively, you may screw the
set screw directly onto the motor
shaft. For this it is required that the
set screw has an appropriate rim for
engaging in the motorshaft (all Mika-
do pinions have this rim). Note,
however, that after attaching the set
screw once, this rim becomes blunt
so that the screw may not be used
again.
Pinionnot
included in kit

Manual
LOGO 20
Page10 ©MikadoModellhubschrauber
#3000
4x M3x8 #1915
1x 10x16x0,5 mm #2010
#2410
#2414
4 Main Gear
4.1 Hub
Bag 2

Manual
LOGO 20
Page11 ©MikadoModellhubschrauber
1x M2,5x8 #1940
1x 10x19x5 #1329
#2414
#2385
4 Main Gear
4.2 Rotor Shaft
Bag 2 • Bag 12

Manual
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Page12 ©MikadoModellhubschrauber
1x 3x18 #2388
#2389
4 Main Gear
4.2 Rotor Shaft
Bag 2 • Bag 12

Manual
LOGO 20
Page13 ©MikadoModellhubschrauber
4 Main Gear
4.3 Adjusting Gear Backlash
The gear backlash must be adju-
sted (see drawings). Excess back-
lashcancauseprematurewear ofthe
maingearandwillleadtoshorterflight
times.
too little backlash correct backlash too much backlash

Manual
LOGO 20
Page14 ©MikadoModellhubschrauber
#2370
#2420
#2425
#2425
4x M3x12 #1954
2x 38mm #2370
1x 27,5mm#2370
5 RC Support
5.1 Battery Fixing Rings
Bag 4
5.2 RC Support
Bag 4 • Bag 12

Manual
LOGO 20
Page15 ©MikadoModellhubschrauber
2x M3x16 #1956
2x 3x8x3 #2397
#2425
5 RC Support
5.3 Servo Trays
Bag 4 • Bag 10 • Bag 12
5.4 Front Battery Fixing Rings

Manual
LOGO 20
Page16 ©MikadoModellhubschrauber
4x 2,9x13 #2062
#2424
5 RC Support
5.5 Frame
Bag 4 • Bag 12

Manual
LOGO 20
Page17 ©MikadoModellhubschrauber
2x 2x8mm #980
2x M2x8 #1902
2x Ø4,8 mm #1570
4x 3x7x3 #930
2x 3x5x2,1 #2463
2x M3x14 #1955
2x 3x5x0,5 #2002
#979
#981
#1570
#972
6 Wash-Out
Assembly
Bag 3 • Bag 10 • Bag 12
The Y-rods #981 must be able to
move easily on the wash-out.

Manual
LOGO 20
Page18 ©MikadoModellhubschrauber
#1004
#997
#1005
7 Swashplate
Assembly
Bag 3
Secure all pivot bolts with
threadlock.
Important:Tightenthepivotbolts
carefully.Donot overtightenthem,
asthey willbreak off.

Manual
LOGO 20
Page19 ©MikadoModellhubschrauber
14-15 mm
.551-.591 in
>20 mm
>.787 in
18 mm
.709 in
4x M2x8 #1902
4x Ø4,8 mm #1570
4x M2 #2070
#1570
8 Preparation for Servo Installation
8.1 Servo Arms
Bag 1 • Bag 12
8.2 Servo Centering
Now you must decide which pitch
range you wish to use. For different
flying styles, different pitch ranges
must be used. For normal flight with
some aerobatics, choose the stan-
dard settings and connect the push
rod at the 18 mm hole on the servo
arm.For3Dflight use20mmdistance
instead.The ball for the tail-rotor ser-
vo arm should be attached with a di-
stance of 14-15 mm from the servo
arm center.
Connect the servo wires to the re-
ceiver and set all channels in your
transmittertoneutral. Now attachthe
servo arms perpendicular to the ser-
vos.
Rudder Servo Standard Pitch 3D Pitch

Manual
LOGO 20
Page20 ©MikadoModellhubschrauber
8 Preparation for Servo Installation
8.3 Elevator and Aileron Servos (2x)
8.4 Tail Servo
The use of Futaba servos requires that you take
away a bit of material from the chassis.
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