Airfoil tools I'm finding http://airfoiltools.com/compare/index to be quite handy for an amateur aerodynamicist to study these sections, without...
e420 and e422 Eppler e420 and e422 are strong contenders: Eppler E420 high lift airfoil Max thickness 14.3% at 22.8% chord Max camber 10.6%...
Correct, the mast is fixed. I have a platform clamped around the mast, just above the mast coat, onto which are mounted six single blocks on...
There is a way that I've been considering to do this without reducing the width at the forward end, which I also need for structural reasons....
Thank you. In my implementation of fx77w153, I can't get the lower (windward) surface as convex as it should be, anyway, so my shape tends towards...
Good, I'm glad that someone on this forum is an offshore mariner. You're my target audience - even if there's only one of you! :D Handling Junk...
I've started a new thread, to discuss cruising wing sails: The design of soft wing sails for cruising
I've started a new thread, as suggested: http://www.boatdesign.net/forums/boat-design/design-soft-wing-sails-cruising-49425.html
Tystie has had a single-masted junk rig for half of her sailing, 40,000 miles. For the other half, she had a ketch rig with soft wing-sails, very...
The answer will depend on what skills you have. 1. I can give you, off-forum, contact details for the owner of the sister ship, based in the...
Mr Watson, Thank you for reminding me of the cost/benefit factor. Not a few authorities have said that if you only have a shoestring budget, or...
Newbridge Yachts and Kingfisher Yachts both offered junk rig as an option, and a significant proportion of their customers took up that option. In...
Yet if you put Jester into a round the buoys race, she'd do abysmally, being very slow to windward. This is one of the points that I'm trying to...
... and this is actually a very good way to get into junk rig, if you're at all unsure of its benefits; and to experiment with new forms of it...
The formulae as written down in the text attached to that java calculator are correct, so something is wrong with it behind the scenes.
That's way too big. My 8 5/8" x 3/16" wall mast (with a doubler inside of doubtful effectiveness, made from an offcut of the original too-long...
Maximum GZ is 1.57 ft, 30 degree GZ is 1.18 ft (Autoship), displacement is about 8 tons, so about 28,200 lb ft max, 21,150 at 30 degrees. If I...
Yes, it would. The JRA was actually given a Laser as a starting point for this, but do you think we could get anyone to get off their rear ends...
Not quite true. The yard of a junk rig extends the sail above the mast, so the mast is shorter than for a bermudan sail (or a wing-sail) of the...
Oh, if only this could be brought about, many people would be delighted! Unfortunately, folks are only too happy to talk about it, but when it...
