Just got back in town, chasing Mayan ruins again and having fun. A few quick notes, the insulated panels on top are not solar charger type. I looked at the situation, and with variable sun, dirty panels, not facing the light, etc, I decided that a genset works for me. I will get one that charges while I hike, for the weight of about one or two batteries, saving a second pack. Charger runs while I camp on shore, about a 6 hour full recharge on 1 1/2 quarts of gas. The DB level on the new ones are doable, and in case of ( whoops?) need, I can get repowered on the water, for less weight than a back up pack. Going too far afield with slow solar charging is not for me, when I get caught out on the water in a storm, darned if I want to Hope it can get home. I chose 48 volt setup for a split two battery pack on the boat sides to add stability, and the smaller wire size that works best. If ambient light is used from panels directly, I would guess that any storm and rain, whatever would stop power generation just when you want to get more from the system. I sure wouldn't count on solar --- except to hold or create the charge between uses, not for powering up.
Thanks for the appreciation, all boats are a work in progress and improvement, --- Cal
Sent: Wednesday, March 04, 2015 7:01 PM
Subject: Re: Fwd: [Electric Boats] Charging batteries in series?
first, my admiration to you for your electricboat...wow what a beauty. I'm just getting started on my local lake cruiser...the refitting of a 21ft sloop, changing it from sail to electric prop. All I want is about 4-5 knots, my theroetical hull speed is 5.73 knot, and I've heard 80% of that speed is an energy efficient target .
I like your idea of putting lightweight flexible panels up to keep over head weight down. I would like to hear your suggestion for what sort of solar charge controller you would use for about 6 grape panels such as you have. I'll be running a small 2hp 36v motor turning a large prop rather slowly(by gearing it down)
Of course I will have a battery bank, but I wonder if I could just cruise directly from what sun is hitting the panels.
__._,_.___
Posted by: "cal" <h20dragon@centurytel.net>
| Reply via web post | • | Reply to sender | • | Reply to group | • | Start a New Topic | • | Messages in this topic (52) |
.
__,_._,___
No comments:
Post a Comment