QS Motor QSD138A-70
QS138 70H V1 Mid Drive Motor — 3000W rated IPM PMSM inrunner for electric motorcycle and e-scooter conversions. Belt driven (default) or sprocket design with 6-5 spline shaft output. 138mm stator diameter, 70mm stack height, 5 pole pairs. Air cooled, IP67 waterproof. Supports regenerative braking. Commonly paired with Fardriver ND72450/ND72530, VOTOL EM150/EM200, or Sabvoton SVMC72150 controllers. Compatible with 428 chain sprocket adapters (10T/11T/13T/14T) or timing belt pulleys.
In brief: 3000W mid-drive motor. 48–72V rated. From $268.
Specs verified Jul 17, 2026
Where to Find
Prices tracked across 3 sellersAliExpress - SIA Tech Store
$268.20 + $185.67 shipping
QS Motor
Request a quoteAliExpress - NB Ebike Factory Store
Out of stock* Shipping estimates are for the contiguous US and may vary by location.
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Price History
Current best price $268.20. Over the past 90 days: low $266.17, high $359.00, average $303.41 — down 12% vs average.
- AliExpress - SIA Tech Store
- AliExpress - NB Ebike Factory Store
| Date | Price | Shipping | Total | Change | Coupon | Rating | Sales | In Stock | Status |
|---|---|---|---|---|---|---|---|---|---|
AliExpress - NB Ebike Factory Store(25 records) | |||||||||
| May 29, 202607:46 PM | $359.00 | $0.00 | $359.00 | $0.00 | SSUS40−$40.00 | — | — | No | active |
| May 28, 202605:21 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | No | active |
| May 27, 202606:36 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | No | active |
| May 27, 202606:36 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | No | active |
| May 23, 202606:27 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | No | active |
| May 23, 202606:27 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | No | active |
| May 22, 202604:24 PM | $359.00 | $0.00 | $359.00 | $0.00 | USSS05−$5.00 | — | — | No | active |
| May 22, 202604:23 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | No | active |
| May 21, 202604:28 PM | $359.00 | $0.00 | $359.00 | $0.00 | USSS35−$35.00 | — | — | No | active |
| May 21, 202604:27 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | No | active |
| May 19, 202604:31 PM | $359.00 | $0.00 | $359.00 | $0.00 | USSS35−$35.00 | — | — | Yes | active |
| May 19, 202604:30 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | Yes | active |
| May 18, 202604:27 PM | $359.00 | $0.00 | $359.00 | $0.00 | USSS12−$12.00 | — | — | Yes | active |
| May 18, 202604:26 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | Yes | active |
| May 17, 202602:32 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | Yes | active |
| May 17, 202602:32 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | Yes | active |
| May 17, 202602:31 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | Yes | active |
| May 16, 202602:27 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | Yes | active |
| May 16, 202602:27 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | Yes | active |
| May 15, 202601:35 PM | $359.00 | $0.00 | $359.00 | $0.00 | SRUS02−$2.00 | — | — | Yes | active |
| May 15, 202601:35 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | Yes | active |
| May 14, 202604:11 PM | $359.00 | $0.00 | $359.00 | $0.00 | SRUS04−$4.00 | — | — | No | active |
| May 12, 202612:02 PM | $359.00 | $0.00 | $359.00 | $0.00 | SRUS38−$38.00 | — | — | Yes | active |
| May 12, 202612:02 PM | $359.00 | $0.00 | $359.00 | $0.00 | — | — | — | Yes | active |
| May 12, 202612:37 AM | $359.00 | $0.00 | $359.00 | Initial | — | — | — | Yes | active |
AliExpress - SIA Tech Store(12 records) | |||||||||
| May 29, 202610:33 AM | $268.20 | $185.67 | $453.87 | $0.23 | — | — | — | Yes | active |
| May 28, 202609:01 AM | $268.43 | $185.67 | $454.10 | $0.13 | — | — | — | Yes | active |
| May 27, 202610:20 AM | $268.30 | $185.67 | $453.97 | $0.00 | — | — | — | Yes | active |
| May 25, 202601:55 PM | $268.30 | $185.67 | $453.97 | $16.96 | — | — | — | Yes | active |
| May 22, 202609:01 AM | $285.26 | $185.67 | $470.93 | $0.15 | USSS05−$5.00 | — | — | Yes | active |
| May 21, 202609:07 AM | $285.41 | $185.67 | $471.08 | $0.00 | USSS35−$35.00 | — | — | Yes | active |
| May 19, 202609:09 AM | $285.41 | $185.67 | $471.08 | $0.57 | USSS35−$35.00 | — | — | Yes | active |
| May 18, 202609:08 AM | $284.84 | $185.67 | $470.51 | $17.27 | USSS12−$12.00 | — | — | Yes | active |
| May 17, 202609:01 AM | $267.57 | $185.67 | $453.24 | $0.26 | — | — | — | Yes | active |
| May 14, 202609:07 AM | $267.83 | $185.67 | $453.50 | $0.14 | SRUS04−$4.00 | — | — | Yes | active |
| May 12, 202609:07 AM | $267.69 | $185.67 | $453.36 | $1.52 | SRUS25−$25.00 | — | — | Yes | active |
| Apr 29, 202605:12 AM | $266.17 | $185.67 | $451.84 | Initial | — | — | — | Yes | active |
Reviews
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Specifications
Motor Design
- Design
- Inrunner PMSM
- Stator Diameter
- 138mm
- Stator Height
- 70mm
- Pole Pairs
- 5
- Shaft Type
- Spline
- Cooling
- Air
Performance
- Wattage
- 3000W
- Peak Wattage
- 10000W
- Rated Voltage
- 48–72V
- Rated RPM
- 3800
- Max Torque
- 55.00Nm
Electrical
- Continuous DC Amps
- 67A
- Peak DC Amps
- 140A
- Flux Weakening RPM
- 6000RPM
Features
- PAS Sensor Type
- None
- Temp Sensor
- KTY83
- Has Encoder
- No
Physical
- Weight
- 11 kg
- Dimensions (L×W×H)
- 210mm × 162mm × 162mm
- IP Rating
- IP67
Ports & Connectors
| Pin | Wire color | Function |
|---|---|---|
| 1 | Yellow | Phase A |
| 2 | Green | Phase B |
| 3 | Blue | Phase C |
| Pin | Wire color | Function |
|---|---|---|
| 1 | Red | 5V Power |
| 2 | No color | None |
| 3 | Black | Ground |
| 4 | Green | Hall A |
| 5 | Yellow | Hall B |
| 6 | Blue | Hall C |
