Proposed keel too small Your proposed keel with 22"x30" exposed comes to 4.6 sq ft area. A reasonable keel area to aim for would be 3.5% of the...
Look at Holder-20 The Holder-20 is a reasonably similarly sized boat with a bulbed lifting (straight up) keel. If you can find one to look at,...
It looks to me that the sin(aoa) version is correct based on the extreme situation where the heel angle is 90deg. The aoa should go to zero. Brent
Marconi Rig implies a main and jib, and Cat Rig has just a main. I assume you want a Cat Rig. We have made various alternate sails for the...
"Brent B - It's a 20ft ply-on-frame dory. Still finalising the keel configuration, but leaning towards asymmetrical twin keels so I quite like the...
My only mast-aft experience was to design and build one for a Junkyard Boats competition. It used a 35 sq ft jib from a Jet-14 as its only sail...
Around 24" would be right for your rig if you fly a spinnaker. Otherwise you might go down to around 20". Putting them too far forward could...
A simplistic look at this would try and see if such a system would get you to your destination faster than conventional sailing. First pass guess...
More ideas With no jib, you could tack an asym chute to the bow of the windward hull when you want to sail at deep angles. You would need a...
_______________________________________________________ Downwind sailing unloads the forestay(s). Max forestay tension occurs while beating,...
Asymmetric spinnaker would work Modern fast boats normally use an asymmetric spinnaker flown from a pole on the centerline. I suggest you work...
Match sail to mast bend It is critical for the sailmaker to measure the mast bend characteristics so the luff curve is correct. The Raider uses...
Work on the sail too... To my sailmaker's eye, that sail looks somewhat too deep. Perhaps you could get it flatter with a lot of outhaul and...
Two acad.pat files New to this forum, so late into this thread. I had exactly this problem when creating a hatch pattern for Contender MAXX...
