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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 seperate compartments to protect the motor, accessory pack and cross mount.
The Cobra 3510 series motors have a 5.0mm 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.
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 theaded prop adapter with 3 screws
? Retaining Collar with Set Screw
? Three female 3.5mm bullet connectors
? Three pieces of heat-shrink tubing
Cobra C-3515/18 Motor Specifications
Stator Diameter ................................... 35.0 mm (1.378 in)
Stator Thickness .................................. 15.0 mm (0.591 in)
No. of Stator Arms ....................................................... 12
No. of Magnet Poles ...................................................... 14
Motor Wind .................................................. 18 Turn Delta
Motor Kv .................................................... 740 RPM / Volt
No-Load Current (Io) ........................ 1.01 Amps @ 14 Volts
Motor Resistance (Rm) Per Phase ..................... 0.065 Ohms
Motor Resistance (Rm) Phase to Phase ............. 0.043 Ohms
Max Continuous Current ....................................... 36 Amps
Max Continuous Power on 3S Li-Po ...................... 400 Watts
Max Continuous Power on 4S Li-Po ...................... 530 Watts
Max Continuous Power on 5S Li-Po ...................... 660 Watts
Max Continuous Power on 6S Li-Po ...................... 790 Watts
Weight ............................................... 178 Grams (6.28 oz)
Outside Diameter .................................. 43.0 mm (1.693 in)
Shaft Diameter ..................................... 5.00 mm (0.197 in)
Body Length ......................................... 41.0 mm (1.614 in)
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