Tuesday, February 22, 2011

[Electric Boats] Re: Newbie looking for advice

 

Denny,

Torqueedo sounds like another simple option and it appears prices are dropping. I searched this group but found mostly old postings. From the specifications a pair of 1003s would seem about right. If anybody has operating experience with the 503, 1003, r2.0 or R4.0 models I'd appreciate an update.

Thanks,
DougMcq

--- In electricboats@yahoogroups.com, "dennis wolfe" <dwolfe@...> wrote:
>
> Doug,
>
> I think a couple of the small Torqeedos (1000 something) would push your 5000# boat at lot more effectively than the trolling motors. Cost would be around the same, too. The Torqeedos have a larger, slower turning 12x10 prop.
>
> Greg,
>
> Check out this thread on the WBF http://forum.woodenboat.com/showthread.php?117455-Arctic-Tern-Electric-Power&highlight=
>
> My 18' Arctic Tern probably isn't too different in size or weight from your stretched Tomcat. One 34# trolling motor pushes it along nicely at 4 mph.
>
> Fairing the round tube and changing to the 10 x 6 APC model airplane prop made a huge difference.
>
> Denny Wolfe
> www.wolfEboats.com
>
>
>
> ----- Original Message -----
> From: cloudmagnet@...
> To: electricboats@yahoogroups.com
> Sent: Sunday, February 20, 2011 2:10 PM
> Subject: [Electric Boats] Re: Newbie looking for advice
>
>
>
> Doug-
>
> You're a man after my own heart!!! I just getting re-started (after a relocation) on an 18' version of Wm Garden's TomCat. I too have been planning to install a coupla MinnKotas, but in a different manner. My plan calls for 2 of their Traxxis 80 lb thrust motors. They will be mounted one on each side of the keel. They will be modified by cutting the shaft just above the motor housing, and fitting them to a welded aluminum pipe inverted "T" whose vertical member will run up through the keel, providing a path for the power leads. (I have a drawing of this done in AutoCad, but don't know how to attach it). I had at first considered the engine-mount units, but decided that I don't need that much thrust (I hope) and the cost difference is substantial. Like you, I also will lay the batteries along the keel for ballast.
>
> --- In electricboats@yahoogroups.com, "dougmcq000" <dougmcq000@> wrote:
> >
> > Currently restoring a 1910-20 Crosby Catboat. Considering electric propulsion to preserve the elegant lines as well as provide needed ballast. Boat is 24' LOA, 20' LWL, & estimated 5,000#. Primary use is coastal daysailing. See photo album at http://groups.yahoo.com/group/electricboats/photos/album/305111725/pic/list
> >
> > After some informal "research" came up the following solution. Install two sets of MinnKota 160 (lbs thrust) in cockpit motor wells with retractable brackets. See motor details here: http://www.minnkotamotors.com/products/trolling_motors/engine_mount/saltwater.aspx
> >
> > The advantages as I see them are:
> > . Economical (each motor is $1,049 with controls, batteries not included)
> > . Simple installation & operation
> > . Minimal space requirements
> > . As a former twin-screw boat owner, learned to appreciate independent F-N-R and 50% "get home" capacity when needed
> > . Line batteries along keel for ballast (since boat is still under construction I have a lot of design flexibility)
> > . Allows for extended cruising - using a portable generator
> >
> > Would appreciate input as to whether power sufficient, estimate of max boat speed, configuration/design suggestions, or alternative solutions.
> >
> > Thanks,
> > DougMcq
> >
>

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