Cobra C-2820/14 840Kv Brushless Motor
Cobra Brushless motors offer the perfect blend of Power, Durability and Value for your model aircraft. Featuring over-sized bearings and robust construction, these high-quality motors offer exceptional performance for R/C, Control-line and Free-Flight applications.
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 2820 series motors have a 5mm shaft for extra strength, as well as oversize ball bearings to support the shaft and provide a long life. The internal bearing measures 11mm x 5mm x 5mm and the outer bearing measures a massive 16mm x 5mm x 5mm! 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.
Included with every Cobra 2820 Series Motor is a complete accessory package which contains the following items:
● Heavy Duty 3mm Thick Cross Style Motor Mount
● Four M3x6mm Motor Mount Screws
● Bolt-On style threaded prop adapter with 4 screws
● Three female 3.5mm bullet connectors
● Three pieces of heat-shrink tubing
Click here for the Cobra C-2820/14 Propeller Data Chart
| Cobra 2820/14 Motor Specifications | |
|---|---|
| Stator Diameter | 28.0 mm (1.102 in) |
| Stator Thickness | 20.0 mm (0.787 in) |
| Number of Stator Slots | 12 |
| Number of Magnet Poles | 14 |
| Motor Wind | 14 Turn Delta |
| Motor Kv Value | 840 RPM per Volt |
| No Load Current (Io) | 1.00 Amps @ 10 Volts |
| Motor Resistance (Rm) per Phase | 0.071 Ohms |
| Motor Resistance (Rm) Phase to Phase | 0.047 Ohms |
| Maximum Continuous Current | 36 Amps |
| Max Continuous Power (3-cell Li-Po) | 400 Watts |
| Max Continuous Power (4-cell Li-Po) | 530 Watts |
| Motor Weight | 140 grams (4.94 oz.) |
| Outside Diameter | 35.0 mm (1.378 in.) |
| Shaft Diameter | 5.00 mm (0.197 in.) |
| Motor Body Length | 40.0 mm (1.575 in.) |
| Overall Shaft Length | 60.0 mm (2.362 in.) |
| Motor Timing | 5-10 degrees |
| PWM Frequency | 8 KHz |
| MPN | C-2820-14 |
|---|
