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How to inspect motor of electric bike in Frey E-bike

Sometimes,it's difficult to feel the difference between the qualified and unqualified motor.It's a scientific way to identify the unqualified motor of electric bike.

            test motor of electric bike

Actually,the performance of the motor depends on the quality of motor and controller.When they match well,the motor can works efficiently and quietly.So,it's necessary to inspect the motor before assembly.It can prevent installing the bad motor on the electric bike.Of course,we will inspect the motor through riding on the different road,when the electric bike is assembled.

Here is about how to inspect the motor of electric bike before assembly in Frey E-bike.We use professional machine to test the motor with the controller.The machine can offer torque to simulate drag force when riding in different condition.The result will show on the computer.When the test is over,you can compare the results.

For example,the picture below shows the different results between qualified and unqualified motor.The blue line is the result of unqualified motor.It stops on the point of torque 33N*M and the qualified motor stops on the point of torque 39N*M. So if the drag force of road passes 33N*M,the blue line motor can't move without any help.The red line motor can move as long as the drag force within 39N*M.The efficiency of the red line motor is higher,especially when the torque is larger.

Sometimes,it's difficult to feel the difference between the qualified and unqualified motor.It's a scientific way to identify the unqualified motor of electric bike.

test result of electric bike motor

If you are interested in electric bike business, want to import,distribute, open shop, agent, wholesale, you can start here.
11/21/2013 10:45:25 AM FREY VEHICLE LIMITED Google+

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