Seeking Advice on Increasing Electric Motor Power Output

[geebee]

Moving on (a lot)

I was looking today at ebikes. Electric bycycles. Basically a regular push bike with an electric motor in one of the hubs and a battery pack. I find these motors are designed to produce power and also collect power on braking. As much generators as they are motors.
(I know all elecric motors can "in theory" be generators but some are more suited than others) Being bike hub mounted these motors are specially designed for very low rpm reqiuring no gearing. They are very flat , light and compact. Typically operating smoothly from 50 rpm to 450rpm It actually strikes me now that these motors seem highly suited for wind turbine use. Even the technology around producing alloy or carbon fibre bike wheels is similar to that in constructing turbine blades.
I wonder give it a couple of years and I bet the people making electric bikes will also be making wind turbines. It makes sense, if you have facilities to build one you can also build the other! You can reduce costs of developing the motors if there are 2 applications for then and you can sell more.

 

[NoTime]

I believe the large 3 blade turbines can and do kill birds. The blades may only turn at 40rpm but when the things are up to 80 metres across the speed at the tips is considerable.
A bird will atempt to fly through the turbine, misjudge the speed and get clouted. Small wind turbines that wizz around faster are much less of a problem. A bird will not fly into a blur of fast moving blades, a bird can and will fly around / aviod it. Something 50 to 80 metres across which apears to be turning slowly the bird will try to fly through. That is the problem. I would expect though a small turbine in the back garden would be somewaht of a scarecrow. Birds would more avoid your garden.

I don't know about those birds.
Not only do they try to fly thru my windows they try to fly thru the side of my house as well.
I have to wonder how many fly into the trees around here.
You might think I would have a collection of dead birds, but so far the count is zero.
It's worse in the spring when I might get a half dozen bird strikes a day.
I've watched them fly in and hear the thud as they hit the side of the house thru the open window.