Description
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 the kit:
- 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-2221/8 Propeller Data Chart
| Stator Diameter | 22.0 mm (0.866 in) |
| Stator Thickness | 21 mm (0.827in) |
| Number of Stator Slots | 12 |
| Number of Magnet Poles | 14 |
| Motor Wind | 8 Turn Delta |
| Motor Kv Value | 1860 RPM per Volt |
| No Load Current (Io) | 1.59 Amps @ 8 Volts |
| Motor Resistance (Rm) per Phase | 0.049 Ohms |
| Motor Resistance (Rm) Phase to Phase | 0.033 Ohms |
| Maximum Continuous Current | 45 Amps |
| Max Continuous Power (3-cell Li-Po) | 500 Watts |
| Motor Weight | 88.0 grams (3.10 oz.) |
| Outside Diameter | 27.7 mm (1.091 in.) |
| Shaft Diameter | 4.00 mm (0.157 in.) |
| Motor Body Length | 37 mm (1.457 in.) |
| Overall Shaft Length | 54.0 mm (2.126 in.) |
| Motor Timing | 5-10 degrees |
| PWM Frequency | 8 KHz |
