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Komodo Hobby

                                             www.komodohobby.com

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Introduction

Congratulations on your purchase of KH-278 outrunner motor kit version 2. It is a
modified outrunner motor kit designed for 3D aerobatics and parkflyer models.
KH-278 V.2 powered with 1.9mm-curved NdFeB magnets. It covers 80% inner
circumference of flux ring. By this latest design, the motor can deliver excellent
acceleration for hovering and performing aggressive 3D aerobetic maneuvers at high
efficiency rate. In addition, high quality hardened steel main shaft and precision CNC
rotor allows the motor running at high rpm without vibration. The three-screw lock
system at the top of end-bell can let you to install and change main shaft without
gluing, while pre-assembled end-bell and flux ring can let you to build the motor
easier and faster. We would say such easy-to-assemble motor kit is hard to find in
DIY motor world. We highly recommend this motor kit to beginner.

Warning

Radio Control Model and Outrunner Motor Kit are not toy!!! It contains sophisticated
small parts and is designed for hobby use only. All parts of this outrunner motor kit
have to be assembled and operated with great care. Outrunner motor can produce
very high power to turn gear or spindle propeller. It is capable of causing property
damage and all bodily harm to operator or spectators. If you are a beginner of motor
builder, please seek assemble and operational help from experienced motor builder.

Be Caution!!!

If this outrunner motor kit is not assembled and operated properly, it can destroy your
electronic speed control, receiver, batteries and relevant equipment completely.

Parts List

(QTY)

Items

(1)

Pre-assembled End-Bell and Flux Ring

(1)

23.8mm Stator

(1)

Bearing Tube

(2)

Ball Bearings

(1)

3.17mm Hardened Steel Shaft

(1)

30feets, AWG 24 Enameled Magnet Wire

(12)

NdFeB N48M Curved Magnets

(1)

Propeller Saver Hub

(2)

Propeller Saver Replacement Rings

(1)

O’ring

(3)

Connector Pairs (Male and Female)

(7)

Shrinking Tubes

(3)

M3 x 4 Screws

(2)

M3 x 8 Screws

(1)

C-Clip

Summary of Contents for KH-278

Page 1: ...Komodo Hobby Building Instruction Manual KH 278 Outrunner Motor Kit Version 2 ...

Page 2: ... recommend this motor kit to beginner Warning Radio Control Model and Outrunner Motor Kit are not toy It contains sophisticated small parts and is designed for hobby use only All parts of this outrunner motor kit have to be assembled and operated with great care Outrunner motor can produce very high power to turn gear or spindle propeller It is capable of causing property damage and all bodily har...

Page 3: ...th Pole magnets First place six South Pole magnets inside the bell and aligned it with six vent holes Then use a drop of CA to secure the position of magnet Second place six North Pole magnets in between South Pole magnets Use a small clip to adjust the magnets until all magnets placed evenly Then use a drop of CA to secure the position of magnet ...

Page 4: ... Note Since the last turn is not a complete circle you need to wind 13times to get 12turns power Make sure that every coil has same number of windings In this manual we would like to share another winding method with you This winding method can let you to use stock wire to wind a 12 16turns motor easier For the beginner you should use labels marked S1 S2 and S3 and stick on magnet wire before wind...

Page 5: ...long magnet wire for connection use afterward 3 At tooth No 2 start to wind 7times from the hub to the outer edge of hammerhead Then wind 6times back to the hub 1 Cut a 16ft magnet wire S3 2 Remain 7 8cm long magnet wire for connection use afterward 3 At tooth No 3 start to wind 7times from the hub to the outer edge of hammerhead Then wind 6times back to the hub 1 Put the magnet wire S1 to tooth N...

Page 6: ...gnet wire S3 to tooth No 6 2 At tooth No 6 wind 7times from the hub to the outer edge of hammerhead Then wind 6times back to the hub 1 Put the magnet wire S1 to tooth No 7 2 At tooth No 7 wind 7times from the hub to the outer edge of hammerhead Then wind 6times back to the hub 1 Put the magnet wire S2 to tooth No 8 2 At tooth No 8 wind 7times from the hub to the outer edge of hammerhead Then wind ...

Page 7: ...1 73 higher than Star system while the Kt Torque is 1 73 lower When you finish the winding steps above you have 6 ending of magnet wires attached to coils Use a shape model knife to scrape off the coating of these six magnet wires Then it is necessary to check any short between magnet wire and stator metal and need to check any short between magnet wires S1 S2 and S3 If you find any short between ...

Page 8: ...Komodo Hobby www komodohobby com 7 Star wye system 6 5 Solder E1 E2 E3 Together S3 S1 S2 7 8 9 1 2 3 4 6 5 Delta System Solder E3 to S1 7 8 9 1 2 3 4 Solder E1 to S2 Solder E2 to S3 ...

Page 9: ...or Now you have three soldered wires attached to coils Insert those soldered wires into shrinking tubes for insulating First drop some Locitite to bearing tube No 272 Red Loctite is one of the best choice to glue bearing tube Second insert bearing tube to stator until you get 0 9mm shoulder Then wait for the Loctite dry ...

Page 10: ...ot of main shaft 11 Place three screws at the end bell Insert a main shaft to endbell Install wound stator inside the bell and put a C clip to the slot of main shaft to secure whole motor system Place three M3 x 4 screws to end bell to secure the position of main shaft Each screw must be turned a bit each time until all screws tighten up ...

Page 11: ... propeller from hitting the ground but also let you install different brand of propeller easily Congratulation You finished the assemble work of your unique outrunner motor project Thank you for your purchase Should you have any comment of this outrunner motor kit please feel free to contact us at enquire komodohobby com GWS 5 5mm GWS 7mm APC 8mm ...

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