Note: Serial number CB1305140001 and later uses 2.5mm screws instead of 2.0mm screws on the bolt on prop adapter.

Cobra Brushless Motors offer performance and value for Sport Flyers and Competition pilots alike. They are built from high quality components, and are designed to give years of top-level performance. All Cobra Motors are shipped in a custom designed package that features protective foam on all six sides of the box, with 3 separate compartments to protect the motor, accessory pack and cross mount.

The Cobra 2221 series motors have a 0.157 inch (4.00mm) shaft for extra strength, as well as oversize ball bearings to support the shaft and provide a long life. The stators are made with 0.20mm laminations for maximum efficiency and minimum Eddy Current losses. Also included on the motor are ultra-flexible motor leads with high-temp silicone rubber insulation and 3.5mm bullet connectors already installed.

To complete the package, a complete hardware accessory kit is included with every Cobra Motor. Included in this hardware kit are the following items:

● Heavy Duty 3mm Thick Cross Style Motor Mount
● Four M3x6mm Motor Mount Screws
● Bolt-On style threaded prop adapter with 3 screws
● Retaining Collar with Set Screw
● Three female 3.5mm bullet connectors
● Three pieces of heat-shrink tubing


Click here for Cobra C-2221/16 Propeller Data Chart


Cobra C-2221/16 Motor Specifications

Stator Diameter ................................... 22.0 mm (0.866 in)
Stator Thickness .................................. 21.0 mm (0.827 in)
No. of Stator Arms ....................................................... 12
No. of Magnet Poles ...................................................... 14
Motor Wind ................................................... 16 Turn Delta
Motor Kv .................................................... 940 RPM / Volt
No-Load Current (Io) .......................... 0.75 Amps @ 12 Volts
Motor Resistance (Rm) Per Phase ..................... 0.126 Ohms
Motor Resistance (Rm) Phase to Phase ............. 0.084 Ohms
Max Continuous Current ...................................... 25 Amps
Max Continuous Power on 3S Li-Po ...................... 280 Watts
Weight .............................................. 88.0 Grams (3.10 oz)
Outside Diameter .................................. 27.7 mm (1.091 in)
Shaft Diameter ..................................... 4.00 mm (0.157 in)
Body Length ......................................... 37.0 mm (1.457 in)
Overall Shaft Length .............................. 54.0 mm (2.126 in)



Items Included in Hardware Package





Cobra Motor Packaging