 Re: supr ez friction drive
I really want an ebike for my second bike so I continue to test this concept. First of all the friction wheel is very viable. It works well however I have come to believe the motor 250 is much to small. How did I come to that conclusion you ask?
I added a second friction drive motor to the front on the front wheel and the bike just sang along. That was five hundred watts of usable power. I often wondered if 140 watt motor wouldn't be enough and save battery power. Now I know don't waste your time with even 250 watt. It just won't do at all. What one needs probably is 450 to 600 watts for good power and use.
Now about battery consumption it is going to be high. That's the bad news, the good news is that the trailer idea adds very little drag to the bike. You can pack a trailer with sla batteries for the same weight as the flooded ones I have been using. You could get probably thirty hours worth at least.
The controller actually slows down the top speed of the motor. They run better as pulse motors. Both on the same switch seems to work as well as anything.
I am going to hold out for a 400 to 500 watt motor. I'm going to try it on the controller I have and if I burn it up, I'm going to just use the on off switch.
Just thought I would update you on what I have learned about building ebikes without a kit. |