If you need to change normal bicycle to mid drive motor Ebike , you can change this clutch
Instead of normal cranke , than add one chain to mid drive motor.
And you can use torque sensors to control Ebike , It is easy to DIY
This Clutch is not free wheel , it can link to mid drive motor and chain to rear wheel.
Shaft can use torque sensors , It is very easy to change normal bike to mid drive Ebike
It is easy and cheaper .