Clever wind powered machines

[DOC123]

See here
http://www.youtube.com/watch_popup?v=HSKyHmjyrkA
Not sure how the friction is kept down on these machines with only light wind to power them.

 

[steamer]

Oh that is way cool!

either a genius or I want some of his ganja! ;D

Dave

 

[shred]

Not sure how the friction is kept down on these machines with only light wind to power them.

IIRC, the wind on the sails pressurizes some plastic bottles that are used for energy storage. Once there's enough stored, off it goes.