 Re: learn as you go
Today's learn as you go moment. I rode the 500 watt 16" pusher motor and it just ate up the power. After four miles the 12 ah batteries were drained. The upside of that motor is that it runs so strong that it is impossible for me to catch up to it so that I can pedal assist. It is so good that it runs on it's own up all the test track hills. The downside is the power use. It just eats up the power.
I I have decided that I want a bike that runs farther on the batteries. To do that it has to run slower. I have a 350 watt motor with a bike sprocket married to the scooter sprocket on the motor itself. I am going to buy another 16" wheel tomorrow. I can't just switch the one I have because I married a scooter sprocket to the rear sprocket of that bike wheel.
I need a 16" wheel to get a feeling for what motor to buy next. The 500 watt runs out very strong downhill, actually nice and fast. The 350 did as well if I remember correctly. I am going to run it to see how it does. If it climbs the test hills without help, I will consider going down some more. I think I want a bike that requires some medium pedal assist on the test hills. About 10 to 12 mph on the flats would be just fine with me. I think the 500 watt is going nearly twenty so I can give up a little of that speed.
The 250 hub is better on power drain, but I'm not sure that the pusher wouldn't be volt for volt a better choice. I'm just going to have to check it out. I would like to get it down to 2 ah per mile or even better. That is the next challenge since I have met the challenge of putting together a bike that will climb the hills around here without pedal assist.
So that is the next challenge. How to make the most efficient diy Ebike I possibly can with my limited amount of knowledge.
Last edited by deacon : 06-28-2009 at 06:35 PM.
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