new cheap electric bike brake sensor

Q:What`s the different from geared motor and gearless motor ?

A:Geared motor inside is gears ,life time is about 3years ,gearless motor life time is 5years. geared motor is better at climbing.torque is powerful.efficienty is above 82%,better than gearless motor .

Q:  What is the difference between front wheel and rear wheel?

A: Front wheel open size is 100mm, is easier to install ,10mins is ok . it is suitable for flat road riding. Rear wheel open size is 135mm, is better for hilly road and hill climbing, and motor can assemble speed gears.

Q:How to ship one sample ?

A:One sample is better shipping by air ,battery shipping by TNT only.sea shipping cost is low ,even free,but nearly all destination port charge is high ,similar as air shipping,but air shipping save a lot of time .