That is a good name for any boat!
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From: Dave Lindsey [mailto:lindsey@xxxxxxxxxxx]
Sent: Tuesday, August 21, 2007 7:57 PM
To: karl Schulmeisters; BDally6107@xxxxxxx; mwhite@xxxxxxxxxxxxx;
swiftsolo@xxxxxxxxxxxx
Subject: Re: rudder blues
Karl,
If you do build a Swift. You shall call it ?Salubrious Effects?.
Yep, I like that.
When are you starting, ah.
Dave L.
_____
David E. Lindsey, C.O.
Lindsey Composites, Inc.
Unit 211, 13308 - 76th Ave.
Surrey, B.C.,
V3W 2V9
Phone (604) 970-2777
Instant messaging-
compositebrace@xxxxxxxxxxxxxxxxxxxx
Regular email with graphics-
lindsey@xxxxxxxxxxx
Home phone (604) 525-8494
_____
All good ideas. The one thing I would add about the bear off ? it helps if
you start out sailing a bit loose (footing). Then bear off only about 45-70
degrees (ie to just past beam reach) and let the boat accelerate even more.
Once the boat is up to scary speed, then bear off the rest of the way ? or
alternatively two-sail reach at 110 -120 degrees off the wind. The
two-stage bearoff has three salubrious (positive) effects:
1) it allows the boat to accelerate before the full downwind load is
placed in the bow thus reducing the force pushing the bow down
2) a faster boat generates more lifting power out of the hull so it
gives the bow shape more power to lift out of the water (buoyancy during the
initial stage 1 bear off and planning lift during the latter bear off)
3) it reduces the loads on the rudder ? by reducing the weather helm
force of a buried lee-bow, you reduce the force on the rudder, plus since
you are bearing off a bit less, you don?t crank the rudder as hard over
which in turn reduces the loads.
The real gotcha is the puffs you were facing. It sounds like you had 20kn
steady with 15-20+kn gusts (that would explain the 20 degree shifts ?
velocity shifts). Hammering gusts like these place maximum loads on
EVERYTHING especially the mast. In fact I?d take the time before the next
sail to check everything on the mast ?just in case?..
Another thought on the rib. Bram what do you thin of inlaying a ¼? or 3/8?
carbon kite batten into the foam on both sides? This isn?t quite the full
cross sectional rib, but it provides the surface stiffness.
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