Cobra C-5330/18 Brushless Motor, Kv=250

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.

To serve the needs for larger size models, Cobra has introduced the new 53mm Motor Series. The Cobra 5330 motors have an 8.0mm shaft for extra strength, as well as oversize ball bearings to support the shaft and provide a long life. There are two internal bearing which measure 16mm OD x 8mm ID x 5mm thick and the outer bearing measures a massive 22mm x 8mm x 7mm! The stators are made with 0.20mm laminations for maximum efficiency and minimum Eddy Current losses. Also included on the motor are ultra-flexible 12 AWG motor leads with high-temp silicone rubber insulation with the ends stripped and pre-tinned, ready to solder on the connector of your choosing.

Included with every Cobra 5330 Series Motor is a complete accessory package which contains the following items:

● Heavy Duty 4mm Thick Cross Style Motor Mount
● Four M4 x 10mm Motor Mount Screws
● Bolt-On style threaded prop adapter with 10mm shaft and M10 x 1.5mm thread
● Four M3 x 14mm Prop Adapter mounting screws

Click here for the Cobra C-5330/18 Propeller Data Chart

Cobra 5330/18 Motor Specifications
Stator Diameter	53.0 mm (2.087 in)
Stator Thickness	30.0 mm (1.181 in)
Number of Stator Slots	12
Number of Magnet Poles	14
Motor Wind	18 Turn Delta
Motor Kv Value	250 RPM per Volt
No Load Current (Io)	2.01 Amps @ 20 Volts
Motor Resistance (Rm) per Phase	0.036 Ohms
Motor Resistance (Rm) Phase to Phase	0.024 Ohms
Maximum Continuous Current	70 Amps
Max Continuous Power (6-cell Li-Po)	1550 Watts
Max Continuous Power (8-cell Li-Po)	2070 Watts
Max Continuous Power (10-cell Li-Po)	2590 Watts
Motor Weight	649 grams (22.89 oz.)
Outside Diameter	63.0 mm (2.480 in.)
Shaft Diameter	8.00 mm (0.315 in.)
Motor Body Length	60.5 mm (1.99 in.)
Overall Shaft Length	94.3 mm (3.32 in.)
Motor Timing	5-10 degrees
PWM Frequency	8 KHz

For more information about this product and the rest of the Cobra Motors product line, please check out the Cobra Brushless Motors web site.