US Warehouse! QSMOTOR QS138 90H V3 with 1:2.35 gear box 4kw 7.5kw Mid drive motor

One set including below kits:

1pc * 138 90H V3 mid drive motor with 1:2.35 gear box

1pc * 428 15T sprocket

Key Features

1) Light weight and small dimension compare to hub motor

2) High performance benefit from flux weakening

3) High efficiency during climbing, and better acceleration

4) Support regenerative braking

Product Description

Drawing

Test Report

Only for reference（due to the limitation of test machine，the maximum torque is not reached.）

A note to client

1. Please contact seller confirm the parameter, otherwise we will produce as default.

2. Please extended 15 days more at least for order prepare when motor no in stock. (Most of motor is customized based on application, without in stock).

3. When place order please leave email address, for seller provide manual.

4. Please read manual careful before using motor and controller, and if meet problem please contact seller in time, and don't disassemble cargo without seller permit, otherwise there will be no warranty.