So you would need 4,000 W of panels to motor at 4.5 knots in bright sunlight without battery use.

I have 5,200 W of panels on the roof of my house, that is 28 large panels.

Sent from my iPad

On 02/02/2013, at 3:56, harryproa@yahoogroups.com.au wrote:

> There is 1 message in this issue.
> 
> Topics in this digest:
> 
> 1.1. Re: 18m Proa Motor/Sailing 
> From: bjarthur123
> 
> 
> Message
> ________________________________________________________________________
> 1.1. Re: 18m Proa Motor/Sailing
> Posted by: "bjarthur123" bjarthur123@yahoo.com bjarthur123
> Date: Sat Feb 2, 2013 12:19 am ((EST))
> 
> 400W x 2h is 800Wh or 0.8kWh. you're off by 10x rob :)
> 
> ben
> 
> 
> --- In harryproa@yahoogroups.com.au, Rob Denney wrote:
>> 
>> Thanks for that. Very impressive.
>> 
>> If you have 400W of solar panels, will 2 hours of (bright) sun fully
>> charge 8kWh batteries?
>> 
>> In bright sun, could you motor at 4.5 knots (4kWh) without battery use?
>> 
>> Hope it proves reliable, as this is a significant jump in auxillary motors,
>> imo.
>> 
>> rob
>