Race-Ready Tamiya 42157 - Transpeed BL 8.5T Brushless Motor for RC Cars  [42157]

Tamiya 42157 - Transpeed BL 8.5T (12mm Rotor)
Price:
CAD$156.95
Brand:
Tamiya
Model:
42157
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Pro-level torque and speed for club racing

The Tamiya 42157 Transpeed BL 8.5T (12mm Rotor) motor is engineered to deliver strong torque and rapid acceleration for competitive RC car racing. Its 12mm rotor gives a compact, high-torque package that helps maintain consistent lap times under demanding track conditions.

Essential features of the Transpeed BL 8.5T

  • High Torque: The 12mm rotor supplies the torque needed for aggressive acceleration and hill attacks.
  • Brushless Efficiency: Built for longer life and lower upkeep than brushed alternatives, reducing downtime between sessions.
  • Compatibility: Designed for use with Tamiya Volac Brushless systems, including Item 42127 and Item 42144.
  • Advanced Performance: Suited to experienced drivers who want precise throttle response and sustained top speed.

Specifications

  • Motor Type: Brushless
  • Rotor Diameter: 12mm
  • Turns: 8.5T
  • RPM: 31680
  • KV Rating: 4400
  • Power: 292W
  • Efficiency: 93%

The Tamiya 42157 Transpeed BL 8.5T motor is a practical upgrade for competitive racers who want consistent torque and speed. Its proven compatibility with Tamiya Volac systems makes installation straightforward for seasoned builders.

No. The Tamiya 42157 Transpeed BL 8.5T is optimised for torque and straight-line control, so it is not the ideal pick for drift setups that favour lower torque and smoother throttle response.
You will need to solder power leads and fit compatible connectors; the motor does not include wiring or an ESC. It pairs with Tamiya Volac Brushless controllers for plug-in compatibility.
Yes, the brushless design and efficient thermal profile make it suitable for repeated race heats, but monitor temperature and allow cooling between runs to preserve performance.

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