First, let me say to tkgc9 tkgc9@yahoo.com, thank you for posting your data.
"a largish solar array of 600W would be able to move a boat at 2-3 knots as long as the sun shines" - correct
"or at least add a knot or two while under sail?" - incorrect - "diminishing return"
if you were sailing along at 3 knots the extra 600W solar would bump you up to about 3.8 knots
if you were closer to hull speed at 4.9 knots the extra 600W would only get you to about 5.2 knots.
Speed Knots RPM Amps. L mrtTemp watts
2.5 774 7 78 336
3.0 1079 17 80 816
3.8 1305 28 80 1344
4.3 1505 42 84 2016
4.9 1754 64 86 3072
5.4 1926 90 93 4320
5.8 2115 122 100 5856
5.9 2193 141 107 6768
If I got this wrong please flame away...
Ray
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Posted by: raytclark@netzero.net
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