China BBS01 250W Bafang Motor with Down Tube Battery

BBS01 250w Bafang Motor With Down Tube Battery
With an integrated speed sensor, this BBS(MM G31) mid-drive motor, which is compatible with standard bikes, has a rated power of 250W,350W and 500W, a reduction ratio of 1: 21.9 and a maximum torque of 80 N.m, providing ideal power for vehicles. This BBS(MM G31) mid motor need your bicycle bottom bracket is 68mm or 100mm.Light but strong and efficient, this BBS mid motor greatly enhances riding comfort and is suitable for touring bikes and commuter bikes. This BBS(MM G31) mid motor is black.
Kit List:

1. Bafang mid crank motor2. Controller inside of motor3. C961 LCD display / DPC-144. Chain wheel and chain cover5. Crank 6. Speed sensor and magnet7. Brake lever 8. Thumb throttle 9. Nuts 10. HL Battery With Charger

Installation:
1. Open the package and take out drive unit accessories; And check the specification whether it is correct.
2. Fix the chain wheel on drive unit with 5pcs screw M5*10, then fix chain cover on chain wheel with 5pcs screws ST3.9.
3. Fix the drive unit axle tube on frame bottom bracket.
4. The surface with teeth of fixing plate towards inside, then fix the plate on drive unit with 2pcs M6*10.
5. Hold the drive unit near to bicycle fork, force less than 5kgs, tight 1st nut M33 onto axle tube with force : 30-40N.m.
6. Fix 2nd nut M33 onto axle tube, tightening force: 30-40N.m.
7. Fix the left crank on the bike with M8 inner hexagon screw. Tightening force: 35-40N.m.
8. Fix the right crank on the bike with M8 inner hexagon screw. Tightening force: 35-40N.m.
9. Connect all cables for battery, display, speed detecting sensor and so on.
Our service:
Pre-sale Services:
1.Provide free consulting, to resolve the confusion from customers and supply technology services free by telephone;
2.Mining and carefully study customer's needs,provide detail and suitable design solutions according to the actual
installation environment;
In-sale Services:
1.Try best to meet the reasonable demands by customers;
2.Keep close touch with our clients during the period of installation;
3.Cooperate friendly with client and satisfy our clients with best quality electric bike .
After-sale Services:
1.We provide free training to our customers on how to install and use ebike .
2.Provide 2-year guarantee for normal products free;
3.A complete after-sale service system to help customers resolve the problems during the using time;
4.Regular follow-up service to our customers, solicit opinions from clients and improve the improvement.