I found these two ideas that might scale up aswell.
http://www.instructables.com/id/Wind-powered-Composter/
http://inhabitat.com/kineticompost-a-wind-powered-composter/
Wayne
>
> Since the wind seems to blow all the time here, about ten
> years ago I did sit down and start drawing a wind powered
> mixer. Then I got too busy using my tow mixer and never
> did anything with it.
>
> It might take a pretty big wind turbine to equal the power of a tow
> mixer, but I think it could be done. I was thinking more of a
> geared turbine that would spin a blade at higher rpm instead of a
> slow action like a mortar mixer. Maybe a savonius type rotor with
> pulleys and belts to raise the blade speed. You would definitely
> need a good brake system and a positive rotor lock for safety.
> spaceman On 6/10/2011 8:29 PM, Wayne wrote: Has
> anyone thought of using a medievil mortar mixer to make pc?
> Traditionaly they where turned buy hand or by a pack animal, but I
> would expect that you could use water or wind power without too much
> trouble. No roads needed then. Wayne
>
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