Just wanted to add one thing to my last post: I was assuming that you have
very good bearings and sensor, therefore negligible mechanical friction.

Sean

At 07:49 PM 2/10/01 -0500, Herbert Graf wrote:
>      I'm thinking of adding a wind speed measurement device to my house
>monitoring system and I was wondering if anybody can point me to a formula
>that relates the wind speed to the RPM of the "vane". I am using the device
>with several "cups" connected to a bar that rotates in response to wind.
>Thanks for any pointers. TTYL
>
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