Brushless, Sensorless Motor The lightest 200W Motor Designed for Helicopters and maximum power to weight ratio applications, Ultrafly’s C/13/XXH brushless, sensorless “outrunner” motor is a unique self cooled motor. It can transfer 200 watts of power from only 45g in weight. The fan design keeps the core at a cool 90 C degree temperature with 180 watt constant power application. It can survive in a low air circulation environment in a Helicopter or a boat. The 4 different KV configurations (2050, 2350, 2750,3350) provide a very wide range of applications. Its high-quality construction and precise CNC tooling enable this motor to operate at higher RPM without serious vibration. The C series motor will fit in many 300/400 size gearboxes with its shaft diameter and mounting screw holes being comparable to a 400 size motor. Used with the appropriate gear ratio, the C series motor can turn propellers ranging from 4 inch to 12 inch diameter. You can power it with NiCd or NiMH batteries having 7-12 cells, or with a 2-6 cell Li-Po battery. See the motor application reference table below for more details. Specifications Shaft Diameter: 2.3mm Shaft Length: 12mm Motor Diameter: 25.2mm Motor Length: 43.4mm Motor Weigh: 45.5g (1.60oz) Distance of Mounting Holes: 16mm & 17mm Mounting Screw: M3x3mm Maximum Input Power: 200watt Maximum RPM: 50,000 Maximum Operating Core Temperature: 120°C
| Motor | Application Type | Battery | Gear Ratio | Propeller | | C/13/20H | Pylon models or boat | 7-8cells | Direct | 4.75x4.75, 5x5 | | C/13/24H | 250-340g 3D models | 3S Lipo | 3 to 1 | APC 9x4.7 or 10x4.7SF | | C/13/24H | 400-600g Sports/speedy model, 600g Hi-wing model | 3S Lipo, 8-10 cells | 2.38 to 1 | APC 7x5E or 8x6E | | C/13/24H | 340-500g Sports park flyer-750g Hi-wing model | 3S Lipo, 8-10 cells | 3 to 1 | APC 8x8E, 9x4.7SF 9x6SF or 10x4.7SF | | C/13/28H | 250-450g 3D models | 3S Lipo | 3 to 1 | APC 10x4.7SF | | C/13/28H | 400-700g Sports Models | 8-10 cells | 3 to 1 | APC 8x8E 9x6SF or 10x4.7SF | | 900g Hi-wing Model, Glider | | | C/13/28H | 400-550g 3D Models | 8-10 cells, 3S Lipo | 3.89 to 1 | APC 11.4.7SF | | 1kg Hi-wing, Glider model | | | C/13/28H | -600g Heli-450g 3D Heli | 8-12 cell, 3-4S Lipo | Direct | Heli | | C/13/33H | 500-800g Sports models | 8 cells or 3S Lipo | 3 to 1 | APC 9x6E or 9x7.5E | | C/13/33H | 1kg Hi-Wing/Glider | 8-10cells, 3S Lipo | 3.89 to 1 | APC 10x 5E or 10x6 folding prop | | C/13/33H | 700g Heli or 550g 3D Heli | 8-12cells, 3-4S Lipo | Direct | APC 9x6SF or 10x4.7SF |
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If you purchase a
brushless motor, you will also need a
brushless controller of equal or greater
current rating. In general, its better to
get the higher current controller because it
can be used with larger motors in future. |
Cautions:
Speed Control: You must use a
brushless, sensorless speed control.
Cooling: You must provide
proper cooling to avoid exceeding the 100°C
limit. Overheating will damage the magnets and windings, and is not covered
under warranty.
Over current: Please use a current
meter to control the battery cell count and the propeller size. When changing
propeller size or battery type, you must measure the current. You must limit
current to the specifications above, or less, to avoid damage to the motor.
Reduce prop size or battery cell count to reduce current.
Max input watt:
The structural design of every motor will limit its heat dissipation. Watt input
is proportional to heat generated. The maximum watt input for:
- B series = 180
watts
- C series = 200
watts
- D series = 160
watts
Do not exceed this limit or you may burn out the motor.
Rotation: Switch any two of the
three wires between the speed controller and motor to reverse motor direction.
NEVER reverse polarity from battery to speed controller. |
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Download Ultrafly C13 Brushless Manual
View Ultrafly Motor Chart
