Hey Cap,
Have a look at the Eboat Model Spreadsheet in the "boat performance" folder in the "Files" section of this group. Might be just what you are looking for.
-Tom
--- In electricboats@yahoogroups.com, Bill Spires <spiresac@...> wrote:
> We should build a spreadsheet that we can through the numbers in and get some
> predictive results. Or does that spreadsheet already exist?
>
> Capt. Bill
>
>
>
> ________________________________
> From: Steamboat Willie <stmbtwle@...>
> To: electricboats@yahoogroups.com
> Sent: Thu, November 4, 2010 5:24:43 PM
> Subject: Re: [Electric Boats] Re: house boat + hybrid
>
>
> The problem with pontoons is they don't like extra weight, and adding a bunch of
> batteries is going to add that extra weight.
>
> --- On Thu, 11/4/10, Bill Spires <spiresac@...> wrote:
>
>
> >From: Bill Spires <spiresac@...>
> >Subject: Re: [Electric Boats] Re: house boat + hybrid
> >To: electricboats@yahoogroups.com
> >Date: Thursday, November 4, 2010, 5:02 PM
> >
> >
> >
> >Yep, I noticed. 8-10 knots is pretty fast and 3-4 hours would be a long time.
> > This would require a very easily driven long hull. Maybe a pontoon boat with
> >hulls shaped like a Hobie cat 18 only a lot longer. We have some house boats
> >like that on the lake here. 6-8 knots for 5-6 hours would be easier to do and
> >give you about the same range. Speed kills! (Power)
> >
> >
> >Capt Bill
> >
> >
> >
> ________________________________
> From: danbollinger <no_reply@yahoogroups.com>
> >To: electricboats@yahoogroups.com
> >Sent: Thu, November 4, 2010 4:45:19 PM
> >Subject: [Electric Boats] Re: house boat + hybrid
> >
> >
> >Bill, Did you notice? Aaron said he is planning on 8-10 knots for 3-4 hours.
> Dan
> >
> >--- In electricboats@yahoogroups.com, Bill Spires <spiresac@> wrote:
> >>
> >> How are you going to use the boat? If it's every now and then when it's calm
> >> wind and water you want to move it that's one set of issues. If it's I want to
> >>
> >> go cruise this thing days at a time that's another set of issues. Once you
> >>know
> >>
> >> the hull type, length and weight you can get an idea of how much power you need
> >>
> >> to move it. Even a small amount of power will push a large vessel at slow
> >> speeds but it takes a lot of power to accelerate or stop it. Wind and currents
> >>
> >> can also require a lot of power to overcome. I think that once you know how
> >>you
> >>
> >> plan to use the vessel and what the layout and size of it is the question of
> >>how
> >>
> >> to power it will be easier to answer. The other question would be what are the
> >>
> >> reasons you want to go electric. Just to give you an idea; 5 hp would push my
> >
> >> Catalina 30 4.5 kts. in calm wind and water. Weight was about 15,000 lbs. 15-
> >
> >> 20 knot winds on the nose would stop it dead or blow it backwards. At very low
> >>
> >> speeds the shape and type of the hull does not matter as there is so little
> >> resistance or skin drag. As speed increases the effect of resistance and skin
> >
> >> drag increase in importance.
> >>
> >> Thinking out where you want to go and how you want to get there is half the fun
> >>
> >> of a voyage.
> >>
> >> Capt. Bill
> >>
> >>
> >>
> >> ________________________________
> >> From: Aaron Costic <aaron@>
> >> To: electricboats@yahoogroups.com
> >> Sent: Tue, November 2, 2010 6:21:28 PM
> >> Subject: RE: [Electric Boats] Re: house boat + hybrid
> >>
> >>
> >> You are right, I was thinking of an all electric drive rather than a
> >> hybrid. With a gen set as a back up to charge the batteries. It would
> >> probably take a pretty hefty battery bank & 2 large electric motors to
> >> safely power the houseboat. Top speed isn't important. A range of 3-4
> >> hours at 8-10 knots would be adequate. Do you think the technology is there
> >> now?
> >>
> >> Aaron Costic
> >> Elegant Ice Creations
> >> www.ElegantIce.com
> >>
> >
> >
> >
>
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