Tamiya 42158 Transpeed BL 9.5T Brushless Motor Precision Race Spec 12mm Rotor  [42158]

Tamiya 42158 - Transpeed BL 9.5T (12mm Rotor)
Price:
£83.67
Brand:
Tamiya
Model:
42158
Condition:
Brand New
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Race Ready Precision with Tamiya 42158

Designed for competitive drivers, the Tamiya 42158 brushless motor delivers consistent torque and controllable throttle response ideal for circuit racing. The 12mm rotor keeps the package compact while supporting sustained output.

Choose Your RPM Curve

With windings from 6.5T to 9.5T available, you can select the motor character that best suits your car and track. Different windings shift the RPM and KV balance to prioritise acceleration or top speed as required.

Recommended for Advanced Setups

These motors are intended for users comfortable with precise electrical work, including soldered connections and ESC configuration. They are not recommended for drift disciplines and are optimised for use with Tamiya Volac Brushless or Volac Brushless BL2 ESCs.

Specifications

  • Motor Type: Brushless
  • Rotor Diameter: 12mm
  • Windings Available: 6.5T, 7.5T, 8.5T, 9.5T
  • RPM Range: 29,520 - 41,040
  • KV Range: 4,100 - 5,700
  • Efficiency: Up to 93%
  • ESC Compatibility: Tamiya Volac Brushless, Volac Brushless BL2

The Tamiya 42158 provides a reliable combination of torque and efficiency for racers who can manage advanced installation and tuning. Correct ESC pairing and setup deliver the most predictable results.

How should I match gearing to this motor?

Use gearing that keeps the motor within its efficient RPM band for your chosen winding. Test different pinion sizes to find the best compromise between acceleration and top speed.

What are common setup mistakes to avoid?

Avoid loose solder joints, inadequate cooling, and mismatched ESC timing. Small installation errors can cause poor performance or overheating.

Is this motor legal for club racing classes?

Check your local club rules for permitted windings and KV limits, but the motor itself is commonly used in allowed competitive classes when configured within regulations.

How often should I inspect the motor?

Inspect bearings, connectors and mounting after each race day and perform a more thorough check every few events to ensure no wear or damage affects performance.

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