looking at the formula again, it does seem kind of optimistic
only .85 ft.lbs. @200rpm = 24 watts.

i have no stop watch.
i use a metronome
i just set the tempo at whatever beats per minuet i want and crank away.
when your speed is correct, your handle will be in the same position at each beat.
once you get up to speed it's easy to keep it there and you can concentrate
on what ever readings you are getting.

it's good you have received a lot of advice about your windmill.
some of it of course ,less helpful than others .
my background is in design and so the visual aspect of things is very important.
whats the point in building something if it looks ugly.
i think id rather have one that looked good,
 even if it was slightly less efficient overall.

i think you could try some tweaking with the angle of the vanes.
that could give the wind more bite.
as well , if you reduce the no. of vanes and increase the spacing
it might allow more penetration or increase the amount of time the wind can
lend energy to your devise.

that is pure research and you will need a bit of equipment in order to make accurate
observations on any changes you make.

i installed a magnetic speedometer on a friends bike last week .
i think he paid 20.oo for it at wallmart. i'm going to get one.

with one of those, the meter you already have, and some sort of wind speed indicator next to your mill, you could measure and keep track of what ever you do.

three phase generation is the standard here for hawt type mills
but for direct drive, drag type mills, and there limited rpm range,  it may be a luxury.
i am prepared to give up a phase or even two in order to achieve the levels of energy
i want at the speeds i can produce.

looking forward to building another mill when i get a few things off my plate.