Re: [Paddlewise] Sailing a Klepper

> PS The S4 sail area is 5 sq meters (about 50 sq. ft).

5 sq.m is about 55 sq.ft; I've looked through your new pictures, and was
prompted to read all 4 phases of Dal's website again.  His final rig is 68
sq.ft (28sq.ft  jib + 40 sq.ft Optimist, though listed 35 in specs). He
tends to solve problems cheap, I tried this too, but eventually had to buy
from Balogh and Folbot, and don't regret.  Dal claims an excellent upwind
sailing with only 35 (40) sq.ft sail, so your S4 must be equally good with
proper rudder and proper leeboard. He also says, btw, that his home-made
leeboard (looks at least same big as Klepper's) is too small to prevent a
leeway.

May be I was too pessimistic about 60-65 degrees upwind sailing after
fighting with currents, and missing last ferry to mainland :-).  It could be
50-55 deg, but I doubt it was anything better with an aft 32 sq.ft rig.
I'm planning to add another, fore sail (smaller, perhaps 24 sq.ft) to my 32
sq.ft aft sail on a hardshell kayak.  Mark Balogh assured me once that
upwind rigs are "natural upwind climbers".  Not really, as I've found. Of
course, he knows a lot and could mean something else.  Yes, they tend to
turn into wind, but don't tend to sail well in this direction :-)... Also,
tacking with an aft sail always involves 2-3 paddling strokes, and larger
rudder is needed (and preferably foiled).  Such adaptations are sometimes
unique, - I couldn't find anybody with an aft rig on hardshell kayak or
Feathercraft Kahuna, except for experimental Kahuna aft rig by Mark Balogh,
not suitable for my purposes. Though, with Kahuna my task was easier due to
Tony Niilus project with K1: http://www.geocities.com/niilus/ .  Most of
dimensions I had to change, adapting it to my boat.

Round tubes are probaly used on seas for aerodynamical and uniform strength
considerations.  20 * 20 mm square tube has a diagonal same as 20 mm round
tube, which means same size at certain directions as in 20mm round tube (=
same wind resistance, or even higher due to turbulence around corners) , but
I.m not sure how much stronger is a square one.  And even then it will be
stronger in some directions and weaker in others, while round one has
uniform strength.  Just thinking aloud...
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