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O.S. - OSMG9505 OSM51010906 51010906 531028500266 4531028500266
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O.S. .05 Brushless Outrunner Motor 3805-1200
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O.S. .05 Brushless Outrunner Motor 3805-1200
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Instruction Manuals: Manual 1 (2 MB)
Parts Saver Eligible:Yes

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O.S. .05 Brushless Outrunner Motor 3805-1200 Add to Wish List
105.02  Buy Now 4.94  
O.S. .05 Brushless Outrunner Motor 3805-1200 Add to Wish List
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O.S. .05 Brushless Outrunner Motor 3805-1200 Add to Wish List
311.76  Buy Now 18.12  

Tech Notes
This is the .05 OMA-3805-1200 Brushless Electric Motor from O.S. Motors.


For .05 size airplanes
Stainless steel prop shaft
Rigid rear mounting design
Two year limited warranty through Hobby Services beginning at date of


.05 Brushless Electric Motor with Backplate,
3.5mm Gold Plated Male Plugs attached to leads,
Three 3.5mm Female Plugs with Shrink Wrap, and
Instruction Sheet


20 - 40A Brushless ESC
Slow flyer type electric propeller from 9x6 to 11x7 in size
depending on specific aircraft


Rated Power: 250W
Rated Voltage: 11.1mm
Rated Current: 20A
Maximum Current (5 sec): 30A
No Load Current: 1.1A
Phase Resistance: 65.1 miliohms
Maximum Efficiency: 80%
kV: 1200
Turns: 22
Poles: 14
Shaft Diameter: 0.16" (4mm)
Shaft Length: 0.46" (11.7mm)
Weight: 2.7oz (76g)
Lead Wire Length: 1.96" (50mm)
Lead Wire Gauge: 17AWG
Length of Motor Can: 1.1" (27.5mm)
Diameter of Motor Can: 1.45" (37mm)
Prop Washer Diameter: 0.75" (19mm)
Thickness of Motor Mount: 0.118" (3mm)
Width of Motor Mount: 1.96" (50mm)
Height of Motor Mount: 1.96" (50mm)


Nomenclature is defined as follows:
0MA means 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

jxs 11/14/12

– If you need more information, use these O.S. resources –
Click Here: Manufacturer's Product Web Page
Email: enginesupport@hobbico.com
Web Site: http://www.osengines.com/
Phone: 217-398-8970
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