I initially thought this was a geared motor and the power cable had 6x signal wires, one was white so I thought it might be for temperature sensor, but i couldn’t get any resistance reading on it. So i opened the motor to find the gear ratio and if the white wire went to anything.
Unfortunately the white wire ended before reaching the inside of the motor, so adding a temperature sensor isn’t going to happen.
To my surprise, when I opened the motor, there were no gears, only cheap thin flat 23H magnets and a stator. This is good because I didn’t want to deal with nylon gears. It explains why this motos was dead silent when running on its original FOC controller.
This work is in preparation for my Flipsky El Cheapo 75100 V1 controller. I needed to know ratio (if any) and pole pairs, and what JST connectors I need to buy for the hall sensor wires.
The hall sensor board is the inverting type (center hall sensor upside down). The motor itself was designed for 60 degree commutation but the inverting board changed it to 120 degree which is compatible with more controller. If this board is used in a 120 degree motor it would change to 60 degree.
Some of the windings are loose which is not good.
This motor is called a 14” motor because its designed for a 14” outside diameter tire. The real motor rim size is 10”. So when you order a motor be very careful to verify its the right diameter, because they do make a real 14” motor (14” diameter rim) and they also make itty bitty scooter motors that have 10” tires so they call them 10” motors. But it’s really a 6” motor. Lol
0:00 motor teardown
0:05 40 magnets so 20 pole pairs
0.18 the tire is 14” x 2.125”, so its called a 14” motor. But the rim is 10” and the motor itself is only 6” in diameter.
0:25 these are 23H magnets which means 23mm HEIGHT. The magnet height is a major factor in the motor performance.
0:37 the iron portion of the stator is also 23mm, matching the magnets.
0:46 these KV is about 14, which lets it go about 20 mph (32 kph) on 36v without field weakening.
0:57 The winding bundles looks beefier than the phase wires so they should of if the phase wires aren’t overheating.
1:33 inverting type hall sensor board (changed 60 degrees to 120 degrees commutation) center hall sensor upside down.
2:20 you can see the center hall sensor upsidedown, and most likely bipolar. So if you replace hall sensors get the right ones.
2:28 9-pin motor connector. Low max current but makes tire change/repair easier.
2:40 MR-30 phase wires connector. Tiny but good for 30a. We shall see. Lol
2:46 the white wire which disappears somewhere along the way.