Credit: Henry Strange and Edward He

TLDR - ONYX RCR Motor

If you impatiently dropped over $1,200 on a motor that’s really worth $300-like the QS 273 150mm 3T, 3.5T, especially the NBPower version-just know I’m gonna struggle to respect you in the morning. And let’s be real, I’ll probably hit you with a “No sticking around for breakfast for you.”

So here’s the deal: if you’re getting a QS 273, make sure it’s the V4 with 6 awg phase wire and 200mm dropout, and if it’s a QS 260, go for the V4 with 6 awg phase wire and 155mm dropout. Don’t play yourself.

273 150mm Motor

The 150mm 273 motor isn’t a game-changer for the ONYX RCR, but the 200mm 273 is. The 150mm, nicknamed “12k,” rose to fame in 2020 with bikes like the Stealth Bomber. Clones are out there-spot them by checking the copper wire, stator, and windings.

Year Version Shaft Dropout Magnet AWG Volt Amps Nm
2020 273 V3 10mm 150mm 40mm 8 72 110 170

QS 205, 260, 273 Motor

Each new motor revison sees improvements in operating temperatures, output performance, materials, and overall manufactuing.

QS 205 Motor

Year Version Shaft Dropout Magnet AWG Volt Amps Nm IP
2015 205 V1 9mm 135mm 35mm 10 72 60 100 54
2017 205 V2 10mm 150mm 50mm 8 72 90 140 54
2018 205 V3 10mm 150mm 50mm 8 72 110 170 54
2022 205 V3Ti 10mm 150mm 50mm 8 72 150 190 65

QS 260 Motor

Year Version Shaft Dropout Magnet AWG Volt Amps Nm IP
2024 260 V4 12mm 155mm 40mm 6 72 240 220 65

QS 273 Motor

Year Version Shaft Dropout Magnet AWG Volt Amps Nm IP
2020 273 V3 14mm 200mm 50mm 6 72 200 260 54
2025 273 V4 14mm 200mm 50mm 6 72 300 310 65

CTY2 205 V3Ti Motor

The CTY2 version of the 205 V3Ti motor features three 8mm phase wire service ports, along with hall sensor and temperature sensor service ports. It is roughly 60% as powerful as the RCR V3Ti motor.

Year Version Shaft Dropout Magnet AWG Volt Amps Nm IP
2022 205 V3Ti CTY2 10mm 150mm 40mm 8 60 90 120 65

The motor models listed below link to their respective QS MOTOR product pages.

205 Motor

Year Motor Link
2017 205 V2 135mm
2018 205 V3 150mm
2022 205 V3Ti 150mm
2022 205 V3Ti 150mm (CTY2)

260 Motor

Year Motor Link
2024 260 V4 155mm

273 Motor

Year Motor Link
2020 273 V3 200mm
2025 273 V4 200mm

Motor Magnet Height

The “h” designation for magnet size refers to the magnet’s height in millimeters. For example, 55H indicates a height of 55mm. Magnet height in a three-phase motor refers to how tall the magnets are. Taller magnets create stronger magnetic fields, which means the motor can produce more power and torque. However, bigger magnets also cost more and make the motor heavier. So, magnet height is a balance between performance and practicality.

Magnet Size
205 50H, 55H
260 40H, 45H
273 40H, 45H, 50H

QS 205 Motor Winding List

A three phase motor has three sets of coils (windings) inside the motor, arranged around the stator. These windings are powered by three separate electrical currents, which are slightly out of sync (120° apart). As electricity flows through these windings, it creates a magnetic field that rotates around the motor.

This rotating magnetic field interacts with the rotor (the part that spins) and makes it turn. The key idea is that the three windings work together to keep the magnetic field spinning smoothly, which makes the motor run efficiently and powerfully.

Winding RPM Voltage kV
5T 650 72 9.03
4T+ 765 72 10.63
4T 820 72 11.39
4T- 956 72 13.28
3T+ 1030 72 14.31
3T 1175 72 16.32
3T- 1275 72 17.71

ONYX RCR Stock QS 205 Motor

  • Voltage: 48V to 144V
  • Maximum Temprature: 180°C (356°F)
  • Amperage: 150a at 72v
  • Magnet Height: 50mm
  • Torque: 182nm
  • Motor Weight: 31lbs
  • Recomended Rim Width: 1.6", 1.8"
  • Recomended Tire Width: 2.75", 3.0"
  • Drop-out: 150mm
  • Disc brake PCD3 / Disc M8 80mm x 58mm
  • Pole Pairs: 16
  • Efficency: 85% to 92%
  • IP Rating: IP65
  • Thermic Probe: KTY83-122
  • Phase Wire: 10 AWG
  • Hall Angle: 120 Degree
  • Dual Halls As Spare With Waterproof Connectors
  • Phase Harness Insulation Wire Color: Black or Orange

ONYX RCR QS 205 55H Wider Magnet Motor

  • Voltage: 48V to 144V
  • Maximum Temperature: 180°C (356°F)
  • Amperage: 175a at 72v
  • Torque: 200nm
  • Magnet Height: 55mm
  • Motor Weight: 41lbs
  • Recomended Rim Width: 1.6", 1.8"
  • Recomended Rim Height: 17", 18"
  • Recomended Tire Width: 2.75", 3.0", 3.5"
  • Drop-out: 155mm, 175mm, 200mm
  • Disc brake PCD3 / Disc M8 80mm x 58mm
  • Pole Pairs: 16
  • Efficency: 85% to 92%
  • IP Rating: IP66
  • Thermic Probe: KTY83-122
  • Phase Wire: 8 AWG
  • Hall Angle: 120 Degree
  • Dual Halls As Spare With Waterproof Connectors

ONYX RCR QS 260 Motor

  • Voltage: 48V to 144V
  • Maximum Temperature: 180°C (356°F)
  • Amperage: 260a at 72v
  • Torque: 220nm
  • Magnet Height: 40mm
  • Motor Weight: 39lbs
  • Recomended Rim Width: 1.8", 2.1", 2.5"
  • Recomended Rim Height: 17", 18"
  • Recomended Tire Width: 3.0", 3.5", 4.0"
  • Drop-out: 155mm, 175mm, 200mm
  • Disc brake PCD3 / Disc M8 80mm x 58mm
  • Pole Pairs: 16
  • Efficency: 85% to 92%
  • IP Rating: IP66
  • Thermic Probe: KTY83-122
  • Phase Wire: 6 AWG
  • Hall Angle: 120 Degree
  • Dual Halls As Spare With Waterproof Connectors

ONYX RCR QS 273 Motor

  • Voltage: 48V to 144V
  • Max No-load RPM: 1339 RPM, 1400 RPM
  • Maximum Temperature: 180°C (356°F)
  • Amperage: 300a at 72v
  • Torque: 200nm, 210nm, 266nm, 300nm
  • Magnet Height: 40mm, 45mm, 50mm
  • Motor Weight: 48lbs
  • Recomended Rim Width: 1.8", 2.1", 2.5"
  • Recomended Rim Height: 17", 18"
  • Recomended Tire Width: 3.0", 3.5", 4.0"
  • Recomended Spoke Diameter: 3.2mm, 4.2mm
  • Drop-out: 175mm, 200mm
  • Disc brake PCD3 / Disc M8 80mm x 58mm
  • Pole Pairs: 16
  • Efficency: 85% to 92%
  • IP Rating: IP54, IP66
  • Thermic Probe: KTY83-122
  • Phase Wire: 6 AWG
  • Hall Angle: 120 Degree
  • Dual Halls As Spare With Waterproof Connectors

QS MOTOR Images

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