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- 4 -
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1. Mid motor drive unit
★
It can meet the needs of bicycle installation and is convenient to install;
★
The central drive unit has a high degree of modular design, which is
convenient for motor maintenance;
★
The middle drive unit adopts half-package design, which is convenient for
customers to customize;
★
The center drive unit has double clutches;
★
The center drive unit is controlled by torque and has a built-in controller;
★
Large starting torque is more conducive to climbing;
★
High efficiency, low power consumption and long cruising range.
1.1 Material and waterproof grade
Shell materials and surface treatment
Internal aluminum shell: die-cast aluminum surface is coated by electrophoresis
with matt black;
Outer plastic shell: the surface of the plastic shell is sprayed with matt black and
silver paint.
Protection grade: IP65
；
;
Environment: temperature:-20
℃
~ 55
℃
atmospheric pressure: altitude
≤
1000
m.
Relative humidity:
≤
90% at 25
℃
