In article , Wayne.B wrote:
On Sun, 21 Nov 2010 05:33:59 -0800 (PST), Joe
wrote:

Do they mention the difference from a chained shaft to a free
wheeling prop. I've heard a chained non turing prop provides less
drag.

Drag is only part of the issue. How much recharge power do you think
can be extracted by the spinning prop?

According to the author of the article (Yachting Monthly's technical
editor, I'm sure he's not overly gullible) and the photo he published,
at 8 knots they were generating 4kW.

This is cutting edge stuff, most anecdotal rebuttals here have been
based on old ideas and technology. Here's a bit more about it:
http://www.matternetwork.com/2010/11...f-cruising.cfm

Justin.

--
Justin C, by the sea.