Protech ZOOM 425 ccpm Specifications Page 45
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• FlightPower lithium-polymer batteries
• Common Sense RC lithium-polymer batteries
(milliohms is a measure of internal resistance; LOWER IS BETTER)
If you are buying batteries not on this list, then you should ask the manufacturer for the internal
resistance of the cells. If the batteries do not have an internal resistance as low as the cells on
this list, then it is probably not suitable for helicopter use.
If you intend to fly aerobatics, do NOT use commercial battery packs. Most of these packs use
a flat springy metal to connect the battery terminals and the springy metal will melt at high
(50-60+) currents. Be sure to use your own inline-soldered battery packs if you intend to do
hard aerobatics with your helicopter.
Lithium-polymer batteries are NOT recommended for helicopter beginners. They are fragile
and incur damage easily, and when they are damaged they can IGNITE up to ten minutes
later.
There was a story posted on RC Groups about a guy who crashed his plane powered by Li-
Pos, and he put it in his SUV. Several minutes later someone told him his SUV was on fire. He
posted pictures of the totaled SUV, and the interior was completely burned.
NOTE: The 17mm-long N20 motor used on some micro helicopter tails (some Piccolo models,
all Hummingbirds, etc) will burn out quickly (5-20 mins) if the motor is run on 8 cells. Be sure to
use only 7 cell battery packs to extend the tail motor life.
6.3.2. Battery connectors
Heavy-duty battery connectors are recommended to minimize power loss.
The following connectors work well for the Corona/ECO/Logo:
• 4mm gold-plated Corally "bullet" connectors
• Astroflight "Zero-Loss" 50 amp connectors
• W.S. Deans Ultra connectors
• W.S. Deans micro connectors (micro helis)
• JST BEC connectors (micro helis)
If you use the 4mm bullet connectors, you may want to use one male and one female plug on
the battery otherwise you may plug in the ESC backwards, which will definitely damage it.
The Astroflight connectors are expensive but they are polarized and of extremely high quality
and highly recommended.
These connectors may have some problems:
• Anderson's PowerPoles
• Sermos Connectors
• Tamiya connectors
Helicopter Parts Selection
32
- Guide v17 1
- Toshiyasu Morita 2
- Mark Pearson 2
- Table of Contents 4
- List of Tables 12
- 1.2. Repairs are expensive 14
- 2.5. Summary of skills 15
- 3.2. Clones 18
- 3.2.1. Design problems 19
- 3.4.1. Lite Machines Corona 21
- 3.4.4. Ikarus ECO Lite 22
- 3.4.5. Ikarus ECO 8 22
- 3.4.6. Ikarus ECO 16 22
- 3.4.10. JR Voyager E 23
- 3.4.12. Mikado Logo 10 24
- 3.4.13. Mikado Logo 20 24
- 3.4.14. MS Composit Hornet FP 24
- 3.4.15. MS Composit Hornet CP 25
- 3.4.16. MS Composit Hornet II 25
- 3.4.17. Maxir SE 25
- 3.4.19. Quick Quick EP 10 26
- 3.4.20. Quick Quick EP 16 26
- 3.4.22. Align T-Rex 450X 27
- 3.4.24. ARK X-400 27
- 4.1. Beginner configurations 30
- 4.2.2. T-Rex 450XL 32
- 4.2.3. Zoom 400 32
- 4.2.4. Logo 10 - brushless 32
- 4.2.5. ECO 8 - brushed 33
- 4.2.6. ECO 8 - brushless 33
- 5.1. Corona upgrade paths 34
- 5.2. Piccolo upgrade paths 35
- 6.1. Control system 37
- 6.2. Servos 41
- 6.2.2. Tail (rudder) servo 42
- 6.3.1. Batteries 43
- 6.3.2. Battery connectors 45
- General recommendation 47
- 6.3.4. Wire 48
- 6.4. Motors and related items 49
- 6.4.1.2. FP Piccolo motors 50
- 6.4.1.6. Hornet CP motors 51
- 6.4.1.7. Maxir SE motors 51
- 6.4.1.8. Zoom 400 motors 51
- 6.4.1.10. ARK X-400 motors 52
- 6.4.1.11. Voyager E motors 52
- 6.4.1.12. Robbe Eolo motors 52
- 6.4.1.13. ECO 8 motors 52
- 6.4.1.14. ECO 16 motors 54
- 6.4.1.15. Viper 70 motors 54
- 6.4.1.16. Logo 10 motors 54
- 6.4.1.17. Logo 14 motors 55
- 6.4.1.18. Logo 20 motors 55
- 6.4.1.19. Quick EP 10 motors 55
- 6.4.1.21. Summary 56
- 6.4.2. Pinion 57
- 6.4.3. Motor connectors 57
- 6.4.4. Main motor ESC 57
- 6.4.5. Tail motor ESC 60
- 6.5. Other 61
- Helicopter Parts Selection 62
- 7.2. Helicopter tools 64
- 7.2.5. Tachometer 65
- 7.3. Adhesives 66
- 7.4. Charging equipment 67
- 7.4.3. Power supplies 69
- 7.5. Electronic instruments 71
- 7.5.2. Wattmeter 72
- Chapter 8. Simulators 73
- 8.3. Easyfly 75
- 8.4. Aerofly Professional 75
- Simulators 77
- 8.9. ClearView 81
- 8.10. PreFlight 81
- 8.11. PhoenixRC 82
- 8.13. Summary 83
- 8.14. Simulator practice 84
- Chapter 9. Transmitters 85
- 9.3. Transmitter tray 88
- 9.5. Transmitter manuals 89
- 10.1.1. Building 90
- 10.1.2. Threadlock 90
- 10.1.3. Gear lubrication 90
- 10.1.4. Frame assembly 90
- 10.1.5. Stripped threads 90
- 10.1.6. Breaking-in motors 91
- 10.1.7. Carbon dust 91
- 10.1.8. Capacitors 91
- 10.1.9. Motor diode 92
- 10.1.10. Ball links 92
- 10.1.11. Motor shaft 92
- 10.1.13. Canopy painting 93
- 10.1.14. Tail servo 93
- 10.1.15. Mounting component 93
- 10.1.16. Ball in swashplate 93
- Pro) only 95
- Making CA joints 96
- 11.1. Channel assignments 102
- 11.2. Component placement 104
- 11.3. Wire routing 105
- 11.4. Soldering technique 105
- 13.1. Center of gravity setup 109
- 13.2. Swashplate setup 109
- 13.2.2.3. Swashplate leveling 111
- 13.2.3.1. Normal mode setup 111
- 13.2.4.7. Check for binding 114
- 13.2.5.4. Check for binding 114
- 13.4. Main motor setup 117
- 13.5. Tail rotor setup 122
- 13.5.4.1. GY240 setup 123
- 13.5.4.2. GY401 setup 124
- 13.5.4.4. Yaw-rate gyro setup 126
- 13.5.5.1. GY240 setup 127
- 13.5.5.2. Yaw-Rate Gyro setup 128
- 14.5. Liability insurance 133
- 15.1. The skills required 134
- 15.2.3. Use white blades 135
- 17.3. Safety notes 139
- Chapter 18. Tail-In Hovering 140
- 20.1. Introduction 145
- 20.2. Inverted T 145
- 20.3. 90 degree yaw 145
- 20.4. 180 degree yaw 145
- 21.1. Using idle-up mode 147
- 21.3. Banked forward turns 147
- 21.4. Backwards flight 148
- 21.5. Banked backwards turns 148
- 22.1. Figure eights 150
- 23.1. Single pirouette 151
- 24.4. Add flybar weights 153
- 26.1. Vibration problems 155
- 26.2. Tail control problems 157
- 26.3. Throttle/ESC problems 161
- 26.4. Swashplate problems 162
- 26.5. Glitching 162
- 26.6. Other problems 163
- Mikado Logo 10 165
- Ikarus ECO 8/16 165
- Align T-rex 450X/450XL 167
- ARK X-400 167
- Motor vendors 167
- ESC vendors 168
- Servo vendors 168
- BEC manufacturers 169
- Main rotor blades 169
- Carbon fiber tubes and rods 169
- Other suppliers 169
- Hobby associations 170
- Useful webpages and forums 170
- Aerobatics 170
- Magazines 171
- Helicopter theory 171
- 28.1. General questions 172
- 28.2. Transmitters 173
- 28.4. Gyros 177
- 28.5. Helicopter setup 177
- Chapter 29. Helicopter Myths 178
- 30.1. How helicopters work 179
- 30.1.2.1. Throttle stick 180
- 30.1.2.2. Rudder stick 180
- 30.1.3.3. non-CCPM 181
- 30.1.5. The rotorhead 184
- 30.1.7. How gyros work 185
- 30.1.8.1. GY401 setup 188
- 30.1.8.2. GY240 setup 191
- 30.1.10. How ESCs work 192
- 30.1.10.3. Governor mode 193
- 30.1.10.4. Timing Advance 193
- 30.1.11. How batteries work 194
- 30.1.12. How motors work 194
- 30.1.12.1. Brushed motors 195
- 30.1.12.2. Brushless motors 197
- 30.1.12.3. Coreless motors 198
- 30.2. Motor selection guide 199
- 30.2.1.3. Motor efficiency 200
- 30.2.1.4. Motor rated RPM 200
- 30.2.2.1. Motor size 200
- 30.2.2.2. Motor weight 200
- 30.2.2.5. Cooling options 201
- Table 30.5. Heatsinks 201
- 30.2.3. Other characteristics 202
- 30.3. Motor selection table 203
- 30.4. Pinion selection guide 212
- 30.4.3. Shaft sizes 213
- 30.4.4. Pinion notes 213
- 30.5. Pinion selection tables 214
- 30.6. Servo selection guide 217
- 30.6.2.1. Size 218
- 30.6.2.2. Mounting lugs 218
- 30.6.2.3. Servo weight 218
- 30.6.2.4. Speed and Torque 218
- 30.6.2.5. Gear type 218
- 30.8. Battery info 220
- 30.11. Useful equations 225
- Glossary 227
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