O.S - Brushless Motor OMA 5010-810 image

O.S - Brushless Motor OMA 5010-810

Manufacturer: O.S Engines Product Code: OSMG9538

9538 Brushless Motor OMA 5010-810

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For airplanes using a four-stroke .52 cu in (8.5 cc) engine
Centrifugal fan design with angled ventilation holes draws air through the motor and across the windings and magnets for improved cooling


.52 Brushless Electric Motor with Backplate, four Phillips Head
Mounting Screws, 4mm Gold Plated Male Plugs attached to leads,
three 4mm Female Plugs with Shrink Wrap, Prop Adapter and
Instruction Sheet



90A brushless ESC


Rated Power: 700W
Rated Voltage: 14.8V
Rated Current: 45A
Maximum Current (10 sec): 80A
No Load Current: 1.8A
Phase Resistance: 24.5 milliohms
Maximum Efficiency: 85%
kV: 810
Poles: 14
Shaft Diameter: 0.24" (6mm)
Shaft Length: 0.46" (11.7mm)
Weight: 8.3oz (234g)
Lead Wire Length: 4.3" (110mm)
Length of Motor Can to Back plate: 1.7" (42.5)
Diameter of Motor Can: 1.98" (50mm)
Length/rear of Motor Can to Prop Washer: 2.3" (58mm)
Prop Washer Diameter: 1.06" (27mm)
Thickness of Motor Mount: 0.20" (5mm)
Width of Motor Mount: 2.7" (68mm)
Height of Motor Mount: 2.7" (68mm)

Performance for this motor with different props and LiPo cells is as follows (all data with 80A ESC):

Prop Size Current LiPo Cells Wattage Thrust RPM

12 x 8E 51A 4S 857W 3.2kg 10,300
12 x 10E 54A 3S 680W 1.7kg 7.380
13 x 6.5E 55A 4S 924W 3.7kg 10,150
13 x 8E 62A 4S 1,042W 3.7kg 9,930
13 x 10E 78A 4S 1,310W 3.6kg 9,370
14 x 7E 70A 4S 1,176W 4.0kg 9,650
14 x 10E 54A 3S 680W 2.7kg 7,380
15 x 7E 79A 4S 1,327W 3.6kg 7,900
10 x 5E 42A 3S 529W 1.8kg 12,200
10 x 7E 53A 3S 668W 2.6kg 11,500
11 x 5.5E 54A 3S 680W 2.4kg 11,500
11 x 7E 62A 3S 781W 2.7kg 10,900
12 x 6E 66A 3S 832W 2.8kg 10,400
12 x 8E 75A 3S 945W 2.5kg 9,300


Nomenclature is defined as follows:
0MA denotes 0.S. airplane motor
First two digits are the rotor diameter
Second two digits are the length of the magnets
Last digits indicate the kV of the motor