Mikado LOGO 20 User Manual
Manual
LOGO 20
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
© Mikado Modellhubschrauber, V2.0
Index
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...........................................1 7
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 ....... 2 4
13 Main Frame without Rotor Head .. 2 5
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 Dr ive 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 4 4
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............ 5 2
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
All parts shown in the boxes are displayed in real size.
LOGO 20
Page 2 ©Mikado Modellhubschrauber
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
disconnect the batteries. Investigate the reason and fix the problem. Do not operate the model again as long as the
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 , ensure that all screws are tightened. A single loose screw may cause 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
Page 3 ©Mikado Modellhubschrauber
Tools for Assembly & R/C Equipment
Rubber Hammer
Drill with
1.5mm bit
(.059 in)
Marker
Screwdrivers
(plus and minus)
Hex Wrenches
1.5/2.0/2.5/3.0 mm
(.055/.079/.098/.118 in)
Threadlock
Ball link pliers
Scissors
Pitch Gauge
Alle shown products are examples. You may use different brands.
Motor + Speed Controller (check the Mikado
webpages for recommended motors)
Fast Charger (Schulze isl 6-330d or isl 6-636+)
Receiver (Graupner DS 19
or SMC 19 SPCM)
Radio with Heli-Software
Manual
LOGO 20
Battery (Sanyo RC2400 or Sanyo 3000 NiMH)
Receiver Battery
(Sanyo AR500)
Gyro (Futaba GY240
or GY401)
Page 4 ©Mikado Modellhubschrauber
4x Servos
1 Main Frame
1.1 Motorplate
Bag 1 • Bag 10
1x 10x19x5 #1329
#2379
6x
M3 #2072
Manual
LOGO 20
Page 5 ©Mikado Modellhubschrauber
#1570
1 Main Frame
1.2 Elevator Lever
Bag 1 • Bag 10 • Bag 12
2x 4x8x3 mm #2397
Choose correct
countersunk screw
#2394
#1570
2x
1x
1x
Ø4,8 mm #1570
M2x8 #1902
M2x10 #1911
1.3 Motor Plate
Bag 1 • Bag 12
4x M3x10 #1953
2x
M3x14 #1955
#2375
#2379
#2376
Manual
LOGO 20
Page 6 ©Mikado Modellhubschrauber
1 Main Frame
1.3 Bearing Case for Main Shaft
Bag 1 • Bag 12
2x 19 mm #2370
#2381
4x
M3x12 #1954
Manual
LOGO 20
Page 7 ©Mikado Modellhubschrauber
2 Landing Gear
Bag 8 • Bag 12
4x M3x14 #1955
#2495
#2496
4x
4x
Align the skids and secure them
with superglue.
M3 #2074
3x7x0,5 #2012
Manual
LOGO 20
Page 8 ©Mikado Modellhubschrauber
3 Motor Installation
3 Motor Installation
Bag 1• Bag 12
2x M3 #2072
Pinion not
included in kit
#2499
2x
2x
2x
Some electric motors are constructed such that they cannot be moved
along the motor plate. If you are using
one of these motors, please use the
motor adaptor plate #2499. The plate
is not needed for Hacker motors.
Please check from the Mikado
website which pinion works best with
the motorset you have (on the Mikado webpage go to LOGO 10 and click
“Motorization”). When a wrong pinion is used, the performance of your
electric helicopter will deteriorate and
the motor or speed controller can be
damaged.
M3x8 #1915
M3x12 #1964
3x7x0,5 #2012
Do not tighten the set screw fully
until the final position of the pinion on
the motor shaft is determined. This is
done after installing the main gear.
There are two options for attaching
the pinion:
1. For securing the pinion, you may
flatten the motor shaft where the set
screw meets the motor shaft - 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 Mikado 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.
Manual
LOGO 20
Page 9 ©Mikado Modellhubschrauber
4 Main Gear
4.1 Hub
Bag 2
4x M3x8 #1915
#2410
#3000
1x
10x16x0,5 mm #2010
#2414
Manual
LOGO 20
Page 10 ©Mikado Modellhubschrauber
#2385
4 Main Gear
4.2 Rotor Shaft
Bag 2 • Bag 12
1x M2,5x8 #1940
#2414
1x
10x19x5 #1329
Manual
LOGO 20
Page 11 ©Mikado Modellhubschrauber
#2389
4 Main Gear
4.2 Rotor Shaft
Bag 2 • Bag 12
1x 3x18 #2388
Manual
LOGO 20
Page 12 ©Mikado Modellhubschrauber
4.3 Adjusting Gear Backlash
too little backlash correct backlash too much backlash
4 Main Gear
The gear backlash must be adjusted (see drawings). Excess backlash can cause premature wear of the
main gear and will lead to shorter flight
times.
Manual
LOGO 20
Page 13 ©Mikado Modellhubschrauber
#2425
5 RC Support
5.1 Battery Fixing Rings
Bag 4
#2425
#2420
5.2 RC Support
Bag 4 • Bag 12
4x M3x12 #1954
2x
38mm #2370
1x
27,5mm #2370
#2370
Manual
LOGO 20
Page 14 ©Mikado Modellhubschrauber
5 RC Support
5.3 Servo Trays
Bag 4 • Bag 10 • Bag 12
2x M3x16 #1956
2x
3x8x3 #2397
#2425
5.4 Front Battery Fixing Rings
Manual
LOGO 20
Page 15 ©Mikado Modellhubschrauber
#2424
5 RC Support
5.5 Frame
Bag 4 • Bag 12
4x 2,9x13 #2062
Manual
LOGO 20
Page 16 ©Mikado Modellhubschrauber
#981
#979
6 Wash-Out
Assembly
Bag 3 • Bag 10 • Bag 12
2x 2x8mm #980
2x M2x8 #1902
2x
4x 3x7x3 #930
2x
Ø4,8 mm #1570
3x5x2,1 #2463
#1570
2x
2x
move easily on the wash-out.
3x5x0,5 #2002
The Y-rods #981 must be able to
#972
M3x14 #1955
Manual
LOGO 20
Page 17 ©Mikado Modellhubschrauber
#1004
#997
7 Swashplate
Assembly
Bag 3
Secure all pivot bolts with
threadlock.
Important: T ighten the pivot bolts
carefully . Do not overtighten them,
as they will break off.
#1005
Manual
LOGO 20
Page 18 ©Mikado Modellhubschrauber
8 Preparation for Servo Installation
4x M2 x8 #1902
4x Ø4,8 mm #1570
4x
Rudder Servo
14-15 mm
.551-.591 in
M2 #2070
Standard Pitch 3D Pitch
18 mm
.709 in
>20 mm
>.787 in
#1570
8.1 Servo Arms
Bag 1 • Bag 12
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 standard settings and connect the push
rod at the 18 mm hole on the servo
arm. For 3D flight use 20 mm distance
instead. The ball f or the tail-rotor servo arm should be attached with a distance of 14-15 mm from the servo
arm center.
8.2 Servo Centering
Connect the servo wires to the receiver and set all channels in your
transmitter to neutral. Now attach the
servo arms perpendicular to the servos.
Manual
LOGO 20
Page 19 ©Mikado Modellhubschrauber
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.
Manual
LOGO 20
Page 20 ©Mikado Modellhubschrauber
#2401
9 Aileron Lever
9 Aileron Lever
Bag 1 • Bag 10 • Bag 12
4x 3x7x3 #930
#1570
#924
4x
4x
2x
2x
2x
2x
1x
Important: The levers f or the left and
right side are different from each
other.
3x5x0,5 #2001
M2x8 #1905
Ø4,8 mm #1570
3x5x4 #924
M3x35 #1961
Ø6x12 #2413
SW5,5x20 #2390
Manual
LOGO 20
Page 21 ©Mikado Modellhubschrauber
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