Hello
I am building my e-bike and my choice is a mid-mount motor because of better handling and low unsprung weight of the rear wheel. However...
I am having problems when it comes to choose the right motor parameters. I want a bike that can go around 50km/h on a 24 inch wheel at the back. No pedals. My weight 75kg. I do not want a monster which will bend my frame, break my chain and stretch my spokes, but it needs to be responsive and accelerate like a healthy mountain biker.
I have found an motor which has the following power curve...
Enough Nm to suit my needs? Should I look for a more powerful motor? I am aware that I need max cadence around 120RPM to work with my rear hub sprocket cassette, so dividing RPM by 4 would multiply Nm by 4, right?
I can do all the fabrication, welding, gearing without problems, I just don't know if 8Nm peak at the motor is enough for real-life riding?
I am building my e-bike and my choice is a mid-mount motor because of better handling and low unsprung weight of the rear wheel. However...
I am having problems when it comes to choose the right motor parameters. I want a bike that can go around 50km/h on a 24 inch wheel at the back. No pedals. My weight 75kg. I do not want a monster which will bend my frame, break my chain and stretch my spokes, but it needs to be responsive and accelerate like a healthy mountain biker.
I have found an motor which has the following power curve...
Enough Nm to suit my needs? Should I look for a more powerful motor? I am aware that I need max cadence around 120RPM to work with my rear hub sprocket cassette, so dividing RPM by 4 would multiply Nm by 4, right?
I can do all the fabrication, welding, gearing without problems, I just don't know if 8Nm peak at the motor is enough for real-life riding?