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B20-40-31L Brushless Inrunner Motor 1850kv

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B20-40-31L Brushless Inrunner Motor 1850kv

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B20-40-31L Brushless Inrunner Motor 1850kv

Dimensions: 20mm x 40mm
KV: 1850 rpm/v
Max current: 8A
Max Power: 170W
Idle current: 0.5A
Resistance: 0.26Ω
Shift: Φ2.0mm
Weight: 63g
Suggested ESC: 15A
Cell count: 3-5SLipo
Bolt holls spacing: 16mm
Bolt thread: M2.5*4
Gold Connector: Φ3.5

  • Kv(rpm/v) 1850.00
  • Max Current (Motor) (A) 8.00
  • Resistance (mh) 0.00
  • Max Voltage (V) 19.00
  • Power (W) 170.00
  • Shaft A(mm) 2.00
  • Length B (mm) 40.00
  • Can Diameter C(mm) 20.00
  • Can Length D(mm) 39.00
  • Total Length E(mm) 56.00

Dimension Diagram Guide

  • attributeset-10


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Gord | Verified Buyer

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  • Overall

Customer Rated

Apr 30, 2014

The unit appears to be well put together. Comes with bullet connectors and heat shrink which is useful. Bench testing at close to or over its rated capacity with a 5x5 prop, the unit appears strong and remained cool to the touch. Only issue is the shaft is NOT 2mm. It is 1 mm with a ground flat. This caused issues as I was anticipating receiving a motor w 2mm shaft size and had prop adapters to suit.

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