Suggest Peak Phase Current: 89-112A (depend on the kV)
Thermic Probe: KTY83/122 (as default, optional)
Working Temperature: 70-120℃ , peak 150 ℃
Brake type: Disc Brake, PCD6*44mm for bicycle
Drop-outs/Rear Fork Width for installation: 135mm
37.5mm english thread length for 7 speed freewheel
10mm axle flats
One Hall Set with waterproof connectors
3mm² Cross Section of Phase Wire (not include insulation layer)
Hall Sensor Phasing angle: 120 degree
Waterproof Grade: IP54
Color: Black (as default)
Package Dimension: 34cm*34cm*33cm/piece
More winding for choose, sample order only support 6T winding, if you want to try other data, MOQ order should be 50pcs.
Add Thermic Probe to protect motor from overheating.
0.35 laminations for better efficiency (instead of 0.5mm).
Improve paiting quality to avoid scratch.
Change new security Torx screw, for CE certification (not cut someone when touch it).
Optimizing structural design
QS Motor VS Crystalyte Motor
135mm droputs for 7sp freewheel rear wheel, updated on 2017.5.5
110mm droputs for front wheel, updated on 2017.6.6
4. Test Report
For Speed: Winding 6T, 410RPM at 48V, equal to 8.54kV
48V 52A battery current, 112A Phase Current
60V 41.7A battery Current, 112A Phase Current
72V 34.7A battery Current, 112A Phase Current
For completed test report, pls. ask sales to send it to you directly.
Suggestion (Setting of Controller) When it's 130 ℃ inside of motor (in 30s), the current should be limited 50%.
When it's 150 ℃, the controller shut down. When it drop down to 110℃, the controller work again.
5. Controller Recommendation
We suggest Sine Wave Kelly Controller, QSKLS48121S for 48V, QSKLS7212S for 72V & 60V.
KLS4812S, USD 119.0/piece for sample.
KLS7212S, USD 143.0/piece for sample.
Bluetooth Adaptor, USD 8.0/piece for sample.
If you prefer Square Wave Yuyangking controller, we suggest QSYK7250J (50A/150A) in new customized design with temp sensor function.
QSYK7250J, USD 50.0/piece for sample.
Bluetooth Adaptor, USD 18.0/piece for sample.
6. For Freewheel
We suggest SHIMANO MF-TZ21, it's 7 speed freewheel.
7. Electric Bike Conversion Kits
More Kit, e.g. Motor Controller, Wheel Rim, Throttle, Freewheel,Charger are avaiable.
8. Application and More power motors list
QS Motor spoke hub motor 500w to 3000w
For more information, please feel free to contact with us.
9. More QS Motor Informaiton:
Optional Appearance, drawing, performance curve/test report are available. Please contact with sales directly.
PS. For delivery cost, please contact with us if it's not reasonable.
We will modify it after place the order on-line (before payment).
When place the order online, please leave the message about the KV and your E-mail address. (For how to choose the KV, please feel free to contact with us. E-mail used for details confirm)
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