USER MANUAL – BBS SERIES DRIVE SYSTEM
I
NSTALLATION
6 INSTALLATION
The bicycle adapted to the M65 drive system needs to meet the following require-
ments:
• The recommended mounting range for the bike's bottom bracket is 68-73mm (for the 73mm
bottom bracket we have special adapter screws)
• To prevent the chain from falling off, it is recommended that the flywheel does not exceed a
maximum of 10 speeds
• Need a battery with the same voltage as the motor,as this motor controller has a maximum
current of 25A ,for your safety the bms of battery needs to be greater than 25A
6.1 Summary of the Components
3
11
1
4 12
2
9
8
5
6
7
1. M615 Mid Drive Unit 2. Speed Sensor 3. Battery(Bafang battery as example)
4. Chain Wheel 5. Display 6. Control Panel 7. e-Brake Lever/Sensors
8. Thumb Throttle 9. Headlight 10. Crank (one side) 11. Crank (another side)