Modified Anemometer

I made some litte modifications to my homebuilt anemometer.
I replaced the wooden center disc by an inline scate wheel. Aditionally it was needful to move the sensor of the tachometer more to the center as on the outer radius it was moving to fast.
The attachment was modified to be able to lower the center disk.
Unfortunately there was only little and breezy wind wind when I took this video.
It is still not configured to show the real wind speed but that will finished later.

You can read a built report (in german) on:
http://www.kleinwindanlagen.de/Forum/phpBB2/viewtopic.php?t=1924

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[charissaroxx12]

this is cool (Y)

how does this measure the wind speed?

don't you have to count the times it goes around..?

[xxlray]

I think your question is the same like nugfingr's. First I set the speedometer to the size of the anemometer. After that I compared the measured windspeed to the data of a bought anemomoeter and adjusted the setup size of the speedometer until both anemometers shew the same value. As follows I did NOT calculate the speedometer's setup by a formula what you might have thought or wished.

[nugfingr]

Does the anemometers windspeed indicated take into account that some of the force of the wind is actually preventing it from rotating on the opposite sides of the "cups", hence slowing it down a bit? or am I off my rocker?

[xxlray]

I guess that you think I just calculated the speed factor to determine the correct wind speed. In fact I used another industrial anemometer to calibrate it.

I hope this answers your question.

[williamwilbur]

@charissaroxx12 look it has a thing on the bottom of it