Cobra C-4130/20 Brushless Motor, Kv=300
Cobra C-4130/20 Brushless Motor, Kv=300
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 4130 series motors have a 6.0mm shaft for extra strength, as well as oversize ball bearings to support the shaft and provide a long life. There are two internal bearing measure 12mm x 6mm x 4mm and the outer bearing measures a massive 17mm x 6mm x 6mm! 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 4.0mm bullet connectors already installed.

Included with every Cobra 4130 Series Motor is a complete accessory package which contains the following items:

● Heavy Duty 3mm Thick Cross Style Motor Mount
● Four M4x8mm Motor Mount Screws
● Bolt-On style threaded prop adapter with 8mm shaft and M8x1.0mm thread
● 3 Prop Adapter retaining screws
● Retaining Collar with Set Screw
● Three female 4.0mm bullet connectors
● Three pieces of heat-shrink tubing

Click here for the Cobra C-4130/20 Propeller Data Chart

Cobra 4130/20 Motor Specifications
 Stator Diameter 41.0 mm (1.614 in)
 Stator Thickness 30.0 mm (1.181 in)
 Number of Stator Slots 12
 Number of Magnet Poles 14
 Motor Wind 20 Turn Delta
 Motor Kv Value 300 RPM per Volt
 No Load Current (Io) 0.77 Amps @ 20 Volts
 Motor Resistance (Rm) per Phase 0.069 Ohms
 Motor Resistance (Rm) Phase to Phase 0.046 Ohms
 Maximum Continuous Current 52 Amps
 Max Continuous Power (6-cell Li-Po) 1150 Watts
 Max Continuous Power (8-cell Li-Po) 1540 Watts
 Max Continuous Power (10-cell Li-Po) 1920 Watts
 Motor Weight 396 grams (13.97 oz.)
 Outside Diameter 49.8 mm (1.961 in.)
 Shaft Diameter 6.00 mm (0.236 in.)
 Motor Body Length 61.8 mm (2.433 in.)
 Overall Shaft Length 84.5 mm (3.327 in.)
 Motor Timing 5-10 degrees
 PWM Frequency 8 KHz