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Electric Motors Winding and Repair Electric Motors Winding and Repair Discussion


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Old 07-27-2014, 09:12 PM   #1 (permalink)
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Join Date: Oct 2011
Default cobra 4130 12s

I have a cobra 4130/12 laying in my toolbox. Can this be run on 12s? Why yes or no? Alicante on would be a low head speed 700 scale heli. auw 15lbs.


Cobra 4130/12 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 12 Turn Delta
Motor Kv Value 540 RPM per Volt
No Load Current (Io) 1.85 Amps @ 20 Volts
Motor Resistance (Rm) per Phase 0.029 Ohms
Motor Resistance (Rm) Phase to Phase 0.019 Ohms
Maximum Continuous Current 65 Amps
Max Continuous Power (5-cell Li-Po) 1200 Watts
Max Continuous Power (6-cell Li-Po) 1440 Watts
Max Continuous Power (8-cell Li-Po) 1920 Watts
Motor Weight 398 grams (14.04 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
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