I'm thinking of the same thing and looking at Atkins Rescue Minor design. It was featured in Woodenboat mag, March/April 2006 no.189 and July/august 2010 no.215. This version had 20 hp diesel and did 29 nautical mph at 20 knots so the hull looks pretty efficient. % to 10 hp electric should make it go pretty well.
George
--- In electricboats@yahoogroups.com, "sirdarnell" <sirdarnell@...> wrote:
>
> Here is a guy's electric outboard project using an etek motor and eventually a Sneakeasy. He achieved a max speed over 10 miles per hour.
>
> http://www.psnw.com/~jmrudholm/etekoutboard.html
>
> http://www.psnw.com/~jmrudholm/etekoutboard2.html
>
> http://www.psnw.com/~jmrudholm/etekoutboard3.html
>
> http://www.psnw.com/~jmrudholm/etekoutboard4.html
>
> http://www.psnw.com/~jmrudholm/etekoutboard5.html
>
> --- In electricboats@yahoogroups.com, "nedfarinholt" <nedfarinholt@> wrote:
> >
> > I am interested in building an electric runabout and would like help on hull design. Here are the basic requirements:
> > Less than 30 feet in length, preferably 25'
> > Strip hull construction
> > Sufficient beam to accommodate two persons side by side, at least 3', prefer 4'
> > Sufficient stability to handle a broach in 3' chop or powerboat wake.
> > Prefer monohull.
> > Cruising speed above 10 knots.
> > Cruising duration 3 hours at 10 knots.
> > Would like to accomplish the above with less than 600 lbs LA batteries.
> >
> > I understand the tradeoffs among battery chemistries, motor, and controller types.
> > What I want help with is hull design. The trade offs between length to beam ratio, drafts, and hull geometry. I have purchased plans for 20 to 30 foot canoes and Atkin's Sergeant Faunce utility. By increasing the freeboard and decking the canoes, I think I can handle the open water, but my real issue is how much must I increase the L/B ratio to overcome the 1.3xsq rt of waterline? I would rather not go as far as the guy in the Wye Island marathon who used a 50' rowing scull!
> >
> > Any ideas or experience or can you refer me to some sites or literature. I have already scoured the web pretty thoroughly.
> >
>
No comments:
Post a Comment