Hey all!
I am new to this forum and ebikes as well. I would like to build a ebike myself.
This is going to be my first build and I have few questions ahead. Hope you guys help me with it.
Here is what I am trying to achieve:
- control engagement and disengagement using the front derailleurs
- Keep the motor power at or below 250W still being able to achieve 25Km/hr without pedal assist.
- Climbs hill with a incline of 15deg
- Be able to use on wet and muddy weathers
What motors should I be using on my build? I researched online and get the idea that 200kv is the right choice. But have no understanding why. Am I correct? Should I stick to a 200kv motor?
I also read that the speed depends on the diameter of the drive wheel and for a 2.5in drive wheel 2000rpm is required for speed of 25km/hr.
Should I drive the motor shell directly or should I use a coating of sandpaper or rubber? Sandpaper provides best cof but wears out the tires pretty soon... Couldn't get much info on rubber.... is there something that can hit a number between?
Coming to the tires, what kinda tires should I use? flat centre region?
If I want to be able to accelerate the cycle from rest, should I stick to using smaller rollers? I read large rollers have terrible low end power.. How does the diameter of the roller affect the power delivery? speed? torque?
Thanks!