Regarding Torqeedo efficiency:
Perhaps there is an error with the information you were looking at. I have been selling Torqeedo products for 3 years and we are seeing incremental efficiency gains every year with each new product release. The 'old Travel 801' is not more efficient than the 'Cruise 2.0 tiller' at any speed, especially if it is a recent 2.0 tiller that shares the same motor/controller from the Cruise Remote series.
The new Travel 503/1003's are also more efficient than the old Travel line was. It's not only the motors themselves, but the propellers are getting better as well. In 2011 you will see multiple propeller choices so you can better tune the motor to your application, be it a small lightweight skiff or a larger heavy boat.
In a month or so the new catalog will be out with lots of background data relating to efficiency and other test results.
Best,
Capt. Todd
www.epowermarine.com
--- In electricboats@yahoogroups.com, "Steve" <sstuller@...> wrote:
>
> The Torqeedo website shows the 801 motor has an overall efficiency of 40% to 45% at inputs of 300 to 400 watts. The Cruise 2 efficiency is 30% to 35%. Your batteries would give you more range with the 801 at three knots than the Cruise 2. For a 23' sailboat I would think the smaller motor is a better choice if you are concerned about range. Thanks. Steve S.
>
> --- In electricboats@yahoogroups.com, "millsy321" <millsy321@> wrote:
> >
> >
> > I have, finally, about completed my e-drive installation on my 23' sailboat. Recently purchased a Torqeedo Cruise 2, powering through (6) 100 AH agm batteries (slightly used- in good condition) in a watertight keel cavity, also acting as ballast. I have only used the motor a few times but have so far been happy with the results: 50 amp max @ 24VDC; 25 amps gives me speed enough even against head winds; 15 amps keeps me moving at 3 knots.
> >
> > Torqeedo is very down on connecting multiple batteries together and I have divided them up into (2) 24VDC banks: Bank 1 has 4X batteries in series/parallel. Bank 2 has 2X batteries in series (I might add another two batts to this bank later on and place them elsewhere on the boat). I also have the option of connecting both 24V banks in parallel through a battery switch. On order is the Expert Lite battery monitor and Quick Charge OB24 with agm charging profile from Evolve Electrics. The Quick Charger I will connect through a battery switch with the idea in mind that I will be able to charge the idle bank through a small Honda genset eventually.
> >
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