We could hardly ask for better testimonials. Thank you, Scott Brown and bmull81 - you guys rock! And so do Wharram's Wingsails. I am on my second Wharram design, both with Wingsails and I love them!
@@johnq.public2621 Perhaps the easiest way of responding to your question is to refer you to a video I posted a few months ago that draws on three short seasons of sailing my Mana 24 equipped with wing sails. For the type of sailing I do, which is for pleasure and not for racing, I am rather fond of the Wharram windsail. My boat is certainly not the fastest on the lake but in the right conditions, it can hold its own. I can count it to be one of the safest on our prairie lake which, having been formed by flooding a wandering river, is prone to very strong gusty winds which change direction unexpectedly. The sails are easy to reef when sudden weather swings dictate it to be necessary. The best way to judge the Wharram windsail is to sail on a boat equipped with them. ruclips.net/video/vnK_Mbq7AF0/видео.html
Thanks for sharing. I have heard very little that does not favour this setup in its application. By all accounts ahead of its time in its day and a great way to simplify a potentially complex concept. Typically Wharram philosophy.
Lovely rig, we use pocket sails on our landyachts. I guess that full length battens and a junk style sheeting system would give even more sail trim/play?
Wharram was one of the earliest Western catamaran designers. Perhaps that will help you find a reference. Given that most Wharram catamarans were home built, most of the sails were probably home sewn, although today I think sailmakers know how to make them.
I paid $210 for Warram plans for the wingsail rig for a narais MKi & IV similar to yours, I see your sails are made by north, you have any leads on where I can get mine made? My rig is 10.5m high.
I am building the Tiki 26, and I would like to know if anyone has the sail plan? as the sails are not well described on the construction plans, nice video!
No wharram simply advice to buy it from jeckels. No diy for the sail unfortunately :( We will release the plans for this cat soon: ruclips.net/video/MgKCwoP5RmE/видео.html The plans will be free most likely and include the sail. If you have one or two months I would wait and build the traditional marshallese sail.
It seems like you would always be able to luff the sail. There is no boom and no spreaders. But I am curious if there is ever any problem with binding.
About 20 years ago there was a windsurfing sailmaker that made those for flat water windsurfing. They called them “double luff.” What’s that big shoe looking thing hanging off the leech at the top of the main for?
Thank you so much for sharing. I think this soft wing sail design is simply the best I have seen so far. So efficient, uncomplicated and relatively easy to sew one up and rig inexpensively. One question though... that coil of rope that went up at the tip of the gaff... is that meant to control the twist at the head of the sail?
Hello Michael - it looks to be a 'vang' that can be useful for adjusting the sail twist in some circumstances - clearly not being used today! Might also be a line for hoisting a burgee or other flag? My guess would be a Gaff Vang: en.wikipedia.org/wiki/Gaff_vang
Airodynamically total rubish. This profile is wrong. Turbulent air resulting from the mast can be eliminated by keeping a gap between mast and sail. This wing arrangement makes the disturbed air flow over the entire sail....Now wonder Wharrams dont sail very well in any direction. I know that from designing model aircraft...
any sailing vessel of a similar length and weight,vortex generators are used on all modern stol and low speed aircraft,all wing or foil surfaces have flow comprimises
@@cartmanrlsusall Thank you. The slot between mast and leading edge of the sail would improof performance. Soft wing sails demand great attention to trim and are not practical for cruising. Traditional sails using hoops or leacing generate more drive and are more forgiving in finding the fine trim automatically, says my father.
@HappyandAtheistthere is a video of a tiki 38 called pilgrim, during it's first Atlantic crossing the crew intentionally steered down swells just for the thrilling ride that they called surfing. If that's not a demonstration of a strong design, then what is.the sail having turbulence is irrelevant it works
We could hardly ask for better testimonials. Thank you, Scott Brown and bmull81 - you guys rock! And so do Wharram's Wingsails. I am on my second Wharram design, both with Wingsails and I love them!
Would you be kind enough to share your experiences on their performance?
@@johnq.public2621 Perhaps the easiest way of responding to your question is to refer you to a video I posted a few months ago that draws on three short seasons of sailing my Mana 24 equipped with wing sails. For the type of sailing I do, which is for pleasure and not for racing, I am rather fond of the Wharram windsail. My boat is certainly not the fastest on the lake but in the right conditions, it can hold its own. I can count it to be one of the safest on our prairie lake which, having been formed by flooding a wandering river, is prone to very strong gusty winds which change direction unexpectedly. The sails are easy to reef when sudden weather swings dictate it to be necessary. The best way to judge the Wharram windsail is to sail on a boat equipped with them.
ruclips.net/video/vnK_Mbq7AF0/видео.html
Thanks for sharing. I have heard very little that does not favour this setup in its application. By all accounts ahead of its time in its day and a great way to simplify a potentially complex concept. Typically Wharram philosophy.
Just a sleeved sail on a pole. Super simple.
Thanks very much for sharing! This rig looks very practical and efficient.
Please ignore the trolls. They mostly add noise and detract from signal.
Lovely rig, we use pocket sails on our landyachts. I guess that full length battens and a junk style sheeting system would give even more sail trim/play?
it might give old wharram a conniption
This is the best rig I’ve ever handled, simple and no hassle
Brilliant 👏
What is the line passing into metal rings at the leading edge of the sail please ?
At 2:29 ? It is the Cunningham, to tighten the luff of the sail to make it set prperly.
I'm picking that those rings are at the reefing points.
Simplicity itself!
How does one acquire a Warren Wing Sail? Do they have a contact number to consult?
Wharram was one of the earliest Western catamaran designers. Perhaps that will help you find a reference.
Given that most Wharram catamarans were home built, most of the sails were probably home sewn, although today I think sailmakers know how to make them.
I paid $210 for Warram plans for the wingsail rig for a narais MKi & IV similar to yours, I see your sails are made by north, you have any leads on where I can get mine made? My rig is 10.5m high.
Any reputable sailmaker will do the job.
I am building the Tiki 26, and I would like to know if anyone has the sail plan? as the sails are not well described on the construction plans, nice video!
No wharram simply advice to buy it from jeckels. No diy for the sail unfortunately :(
We will release the plans for this cat soon: ruclips.net/video/MgKCwoP5RmE/видео.html
The plans will be free most likely and include the sail. If you have one or two months I would wait and build the traditional marshallese sail.
there is no sound.
New sound to make it a better video.
What about when it’s wet and you can’t luff ?
It seems like you would always be able to luff the sail. There is no boom and no spreaders. But I am curious if there is ever any problem with binding.
Nice explanations, thanks
About 20 years ago there was a windsurfing sailmaker that made those for flat water windsurfing. They called them “double luff.” What’s that big shoe looking thing hanging off the leech at the top of the main for?
Its the vang, a line at the gaff to control the twist ;)
How about some wind tunnel testing?
Thank you so much for sharing. I think this soft wing sail design is simply the best I have seen so far. So efficient, uncomplicated and relatively easy to sew one up and rig inexpensively. One question though... that coil of rope that went up at the tip of the gaff... is that meant to control the twist at the head of the sail?
Yes, that's a kind of gaff sheet for twist control.
What's the hank of rope at the head of the sail? Nice video, thanks for taking the time to put it together and post it.
Hello Michael - it looks to be a 'vang' that can be useful for adjusting the sail twist in some circumstances - clearly not being used today! Might also be a line for hoisting a burgee or other flag? My guess would be a Gaff Vang:
en.wikipedia.org/wiki/Gaff_vang
Its a vang, not used for the demonstration ;)
How do you reef this system?
just lower the top boom
the same way you reef any sail. there are two sets of reef points on the main, one on the jib. so you lower and tie, just like always
Airodynamically total rubish.
This profile is wrong. Turbulent air resulting from the mast can be eliminated by keeping a gap between mast and sail. This wing arrangement makes the disturbed air flow over the entire sail....Now wonder Wharrams dont sail very well in any direction. I know that from designing model aircraft...
I doubt that the airflow over a soft flexible surface is ever smooth but wharrams are known for good performance
Good performance??? Compared to what?
any sailing vessel of a similar length and weight,vortex generators are used on all modern stol and low speed aircraft,all wing or foil surfaces have flow comprimises
@@cartmanrlsusall
Thank you. The slot between mast and leading edge of the sail would improof performance. Soft wing sails demand great attention to trim and are not practical for cruising. Traditional sails using hoops or leacing generate more drive and are more forgiving in finding the fine trim automatically, says my father.
@HappyandAtheistthere is a video of a tiki 38 called pilgrim, during it's first Atlantic crossing the crew intentionally steered down swells just for the thrilling ride that they called surfing. If that's not a demonstration of a strong design, then what is.the sail having turbulence is irrelevant it works