Newbie but install was easy.
Never ridden and e-bike never built one! I had a bike shop remove the bottom bracket for me and did the rest myself. Install took less than 3 hours and I was not rushing at all. This is a commuter bike i ordered the 48 tooth chain ring I should have ordered the 52 (I have since). The 48 tops out at about 37kmh on pedal assist pedaling any faster is difficult. I had trouble with my rear derailer cable being trapped by the motor I used a small piece of abs pipe as a spacer. On throttle it goes about 50 kmh (30mph). I used a 13.5 ah 52v battery and on the first charge got about 50 kms range using mostly pas 3 of 5 very little throttle and lots of hills, according to the display I am generally drawing 300 to 500 watts.