Monday, August 20, 2012

Re: [Electric Boats] Re: Electric Outboards?

 

yep, in reality it does NOT take an elephant to move a 10 ton sailboat. 30 years ago , before my wife was my wife , we were swimming , of an island in the gulf of mexico or the caribian , somewhere, we had the "gypsy " my steel hull 10 metre, (33foot ) a yacht registered a 20 tons , although I'm not sure she actually withed anywhere near that, the registration is on displacement of sea , not on gross wight. anyway , Lupita,(5' tall 90 lbs soakin wet with a pitcher of beer in both hands , so a tiny chick, just pushed my boat and it moved some 10 feet , she was calling herself "superwoman" for a long time. but
yep, they move pretty easily on water, now planing hulls , they eat some serious power to "get up" but a sailboat , moves pretty easily at her hull speed. I have been sailing since 1965, so I have a limited amount of experience to share on the subject.
Don Bland

From: Carter Quillen <twowheelinguy@yahoo.com>
To: "electricboats@yahoogroups.com" <electricboats@yahoogroups.com>
Sent: Mon, August 20, 2012 10:40:40 AM
Subject: Re: [Electric Boats] Re: Electric Outboards?

 

Here's something interesting someone is doing with Torqueedos. This guy is going to push a 48' trimaran around the great loop with two of them. I spoke with him and "he says" that he can get the boat up to 10mph with them and cruise real time off 2.5 kW of solar power at 6 mph. The boat is apparently very light for it's size and only draws 18". He's using agm batteries and had quite a negative opinion of Lithium Ion technology when we talked about his design. Not sure why.
 
 
http://electricsolarpoweredboat.com

From: sirdarnell <sirdarnell@yahoo.com>
To: electricboats@yahoogroups.com
Sent: Saturday, August 18, 2012 10:23 AM
Subject: [Electric Boats] Re: Electric Outboards?

http://www.all4solar.com.au/

--- In electricboats@yahoogroups.com, "luv2bsailin" <luv2bsailin@...> wrote:
>
> John,
> I really don't think you'd be happy with any of the electric outboards on the market. Sure you could motor along in mild conditions, but for situations like backing into a 20MPH wind that you mentioned I think you'd be underpowered. Keep in mind you have a lot of windage from the hull and rig to overcome, besides the water drag and inertia.
> If you already have an inboard, why not just replace it with an electric motor and use your existing shaft and prop?
> Jim McMillan
>
> --- In electricboats@yahoogroups.com, oak <oak_box@> wrote:
> >
> > Yes, I've heard that too.  Of course, it would be interesting to hear the context - was it on an inland lake, or out in open conditions with current and large waves?
> >  
> > I can tell you my Atomic 4 gas engine with 30HP is wayyy more than I need on the lake.  I cruise at 5-6mph with the throttle very low.  And I have to take it out of gear in the marina to slow down enough when I'm nearing my slip (and still hit reverse to stop).
> >  
> > John
> > 
> >
>




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