I posted this clip on youtube of a German pilot, Toni Roth, flying an Atos with an electric mosquito type powered harness. Notice how quiet it is. At the end he disassembles harness motor and battery. I read that Werner Eck developed this new direct drive electric motor that doesn't need gear reduction, it drives the prop directly. I edited out the paraglider parts.
http://www.youtube.com/watch?v=6br6DJ1Dis4&fmt=6
This is in youtube high quality mode.
Electric Atos Hang Glider by Werner Eck - youtube video
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