How much power is needed for 4 kts ?
At a guess, maybe 2.5-3 kW ?
On 04/06/2014 16:45, mike@electricyachtssocal.com [electricboats] wrote:
> We felt the prop was not adequate and motor too small.
>
> We installed a 10.0kW motor and geared it to drive a 3 blade 13X10
> propeller (not sure of the reduction). A 48v 225AH flooded battery
> bank was installed with the idea that it would be replaced in several
> years with a new technology. The new system weight equaled the old
> gas system's weights. The boat can reach hull speed and has a range
> of about 12NM at 4kts at 60% DOD. As an aside, the client turned down
> a substantial cash offer for the boat this last weekend at the boat show.
>
> There is a significant difference in steering this boat with its full
> keel and rudder hung off the keel. The boat was not designed to go in
> reverse as it is a real challenge. You have to get the boat moving to
> have even the least bit of control from the helm.
>
> Mike
> Electric Yachts of Southern California
--
-hanermo (cnc designs)
Posted by: Hannu Venermo <gcode.fi@gmail.com>
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