Chris:
While I was thinking putting in a 48 volt diesel generator is always an option. But, I think I've gotten too use to the smell of clean down below to go back to diesel. I'm not so sure that a diesel generator will be all that reliable in a storm anyway. There are plenty of stories of diesels that have died in storm conditions as the crud in the tanks got stired up and clogged the filters. If you are in a storm there will be wind and a storm sail may be a better choice than relying on an engine to slug it out with the ocean. Remember too in storm conditions your wind generator should be pegging the ammeter too charging your battery banks. Then there is a sea anchor and drouges which may not give you any forward movement but, will allow you to rest. Hopefully. <g> I'm not sure how having a diesel generator will help that much in storm conditions.
Mike
http://biankablog.
--- On Wed, 7/15/09, Chris Witzgall <chris@witzgall.
From: Chris Witzgall <chris@witzgall.
Subject: [Electric Boats] The missing link in "affordable" diesel electric
To: "electricboats@
Date: Wednesday, July 15, 2009, 3:37 PM
We have a 32¹ Westerly Fulmar. It weighs perhaps 12,000 lbs, with a 26¹
waterline, and is currently powered by a Volvo 18hp engine.
It seems to be that both motor and battery technology has finally come to a
place that can support owner installed electric boats that need to be able
to have a longer range. The missing piece is a small, light diesel dc
generator that can put out between 40-100a @ 48v. Something like this, but
marinized:
http://www.polarpow erinc.com/ products/ generators/ 1-3,5kw_Lambardi ni.htm
Is anyone else thinking about this the same way as I am? Our future plans
may include a few years of full -time cruising, so we won¹t be able to
recharge at the dock, and extended motoring time for safely is a necessity.
Put a 400ah 24v bank, or a 200ah 48v bank of LIFEPO4 batteries, weighing at
~100 lbs. Add a 12v converter, say 10 lbs. DC motor and assembly, 50-100
lbs. DC Generator, 150lbs (made up number) Total system weight = <360 lbs
Remove: 305lbs engine and transmission. 160lbs of lead acid batteries. Extra
diesel tankage already on boat (keep 20 gallon tank only) 50lbs. Total
removal: 515lbs.
The only component that is missing is that generator. Gas is not an option
for safety reasons. While the little Hondas are great generators, I would
not want to rely on keeping one running during a storm.
Thoughts?
Chris
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