From: vaughnsimon@gmail.com   
      
   On 12/13/2014 12:38 AM, clare@snyder.on.ca wrote:   
   > An automotive alternator requires pretty high RPM, which necessitates   
   > a SMALL "prop" to get the speed without the tips going supersonic -   
   > and not enough "disc area" toproduce enough torque to generate more   
   > than a few watts.   
     Not only that, unless modified with strong field magnets, they require   
   a hefty excitation current.  In general, unmodified auto alternators are   
   useless for home/hobby-sized wind power.   
      
   Connected to a suitable small engine though, they can make a great   
   emergency battery charger.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)