Selecting DC Motor Power rating for an electrical-bike project? Answered
I want to select a dc motor for my e bike project. I want to move a mass of 140 kg including cycle weight at top speed of 25km/h.
I am confused with selecting motor specification, on Power rating. How can I calculate the required Power to drive a weight of 140kg with a speed of 25km/h. I have tried to use the formula that I found in the website ( http://www.kreuzotter.de/english/espeed.… ) .
The power rating that I got is about 179W. But on reading of the articles on (investigating the human cycling performance), I found that the average people cycling power is less than 100W.
I also have see the commercial e-bike specification, the commercial e-bike used 24V 250W DC motor to power their e-bike.
Please help me in this matter, I am very confused with this, if there is any formula or calculation...please guide me ...I am appreciate your helps.