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Steve Webb Models
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OS-EP Brushless Motor .40 to .50 Size

O.S. REF: OMA-5020-490 Brushless Motor (.40 to .50 size 2 stroke equivalent)

Legendary O.S. quality in a brushless electric motor! This one is intended as a replacement of .40 .50 class 2 stroke and .70 class 4 stroke engines, using 5 or 6 cell Li-Po packs and will provide strong, linear power.

This new range of brushless motors features a unique. O.S. designed cooling system, a strengthened centre body and large ball bearings. The propeller driver has been machined from stainless steel for both strength and durability.

Each motor is balanced during manufacture for optimum running and reliability.

Supplied with a rear mount and 4mm gold connectors as standard accessories.


  • Weight: 350g
  • Resistance: 23 mOhms
  • Max Current: 90A for 10 secs
  • Current Range: 50 60A
  • ESC Timing Degrees: 20 30 Degrees
  • Bearings: 3
  • Turns: 16
  • KV RPM: 490
  • Power Output: 1110W
  • Nominal Voltage: 18.5 22.2v (5 6S Li-po)
  • No Load Current: 1.5A
  • Max Efficiency: 85%
  • Shaft Length: 11.5mm
  • Shaft dia: 6mm


£111.99 Each

Out of stock.
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