Eric,
The goal is to get something back, I've been disappointed many times and I probably will again, but that won't stop me from continuing the work on an efficient system that will work on "some" boat. This is not a one size fits all kinda problem. I used to work for Apple computer and I can't count the times that seemingly improbable tasks were handed out that had not been done before, so it's nothing new to me... I've really had fun with this project, some success in areas, and some "try-overs"... hahaha I have nothing to sell and selling something is not my goal, I believe that electric boating, especially in a sailboat is the best alternative.. and that given enough time in generation mode you'll be able to supply your needs, as long as your realistic in your demands... storage is getting better but still has a ways to go, generation is not efficient enough yet, but will be as long as we don't get so discouraged that we give up and us say, "can't be done"... I almost said that once and almost got canned..... Live, learn and expand, you'd be surprised where answers come from... enough soap box, I have a lot of respect for your abilities and experience, happy sailing...
Dave K
PS: wish I had your Tri... darn nice boat..
From: Eric <ewdysar@yahoo.com>
To: electricboats@yahoogroups.com
Sent: Wed, April 20, 2011 6:21:07 PM
Subject: [Electric Boats] Re: hydro generator
Dave,
I've noticed the same thing with my F-27 trimaran. Since the boat responds so quickly to changing conditions, relating the cause and effect to trim changes and other changes like lifting the motor out of the water can be difficult at times.
Multihulls also have the freedom from the general limitation of hull speed. Chris has reported sailing his 43' tri at more than 25kts, and I've sailed my 27' tri at 17kts.
But a 30' monohull will rarely see 7kts, if ever, and extra drag will slow the boat down in mild conditions. Since there is little evidence of any regeneration below 5kts, that leaves a pretty narrow window of potential regen. As long as you accept that the regen that you get may not cover anything more than house loads, then you you won't be disappointed
Fair winds,
Eric
Marina del Rey, CA
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