O.S. .40 Brushless Motor (490kV)

Discontinued Online
This item is discontinued and no longer available for purchase. You may want to search our site for a similar item.
This is the O.S. .40, 490kV Brushless Motor. With the introduction of these brushless motors, O.S. reaffirms its standing as R/C's most innovative and respected resource for all model power needs. Designed by O.S. engineers to be the new "gold standard" in electric power, these motors offer the same legendary quality and reliability that have made O.S. glow engines famous worldwide for 75 years. Pilots loyal to outstanding O.S. performance but eager to fly electric will soon have the ideal option powering electric airplanes using new O.S. brushless motors!

O.S. brushless motors feature a ventilation system that increases efficiency and allows the motors to generate additional power. The key to this system is a unique centrifugal fan design. The fan draws air through specially angled ventilation holes, across the windings and over the magnets for greatly improved cooling.

Other performance features of O.S. brushless motors include:
  • Recommended for 4-stroke 70 size, or 2 stroke 40-50 size airplanes
  • A thick can design that resists distortion
  • Three high-quality bearings
  • Rigid and secure rear mounting design
  • Shortened motor length for easy installation in short cowls
  • A stainless steel prop shaft
  • Supplied back plate, prop shaft, and gold-plated female plugs

Rotor Diameter: 50mm
Magnet Length: 20mm
Output: 490kV
Watts: 1110
Weight: 350g (12.3oz)

Application Information
 Propeller Size  ESC  Max Electric Current  LiPo Cell
 14x8  80A  45A  6S
 14x10  80A  55A  6S
 15x8E  80A  50A  6S
 15x10E  80A  60A  6S
 15x10E  80A  42A  5S
 16x8E  80A  58A  6S
 16x10E  80A  51A  5S


This product was added to our catalog on September 19, 2011.