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Yoav

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  • Birthday 01/01/1

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  1. Yoav

    Surfing W1

    It's possible of course, but there's a "price" to pay for it: 1. Extra weight 2. Reduced strength 3. Reduced reliability ("If something can go wrong - it will...") 4. Extra cost Compromises, inevitable compromises... like in everything else in life :mrgreen: Yoav
  2. Yoav

    Surfing W1

    Hi Brad, You're right for the "paddle skiing" (standing) part, but the downside of a paddle that's longer than 9 ft is that it makes paddling in the lower positions (sitting, riding and kneeling) less efficient. So, basically the 9 ft paddle is a compromise that works well enough for me (I'm 6') in all paddling positions. http://www.wavewalk.com/PADDLING%20POSITIONS.html Yoav
  3. Yoav

    Surfing W1

    Hi Frank and everybody, I recently tested the side-floatation modules developed for the sailing W1 in the surf, and this video is the result: http://www.wavewalk.com/Surfing%2001.WMV Yoav
  4. Something like this drawing Frank? This sketch shows a kind of small W boat / personal watercraft for 1-2 persons with a telescopic steering bar that can pivot up and down, so the operator can be sitting, riding or standing anywhere along the saddle. Unlike the W1 (the boat in the videos) which is a paddlesports boat and therefore needs to be narrow, other W boats can be made wider, for example at the top of the hulls so as to offer additional lateral stability Also, you don't necessarily have to make the hulls narrow: The boat is a W as long as the passenger/s can sit , ride and stand comfortably with a leg in each hull and each foot resting at the bottom of its hull As for plywood, I think the W concept is quite tolerant to straight lines and flat surfaces, and you can make the pointed tips from wood straps. I think Matt (JEM) could advise you on these things. Yoav
  5. Ken, If you try paddle-hopping you'll probably get tired before anyone sees you :D... Anyway, paddle-hopping is basically a demo for something we call "hyper stability" in this boat that's just 25" wide. There's also paddle-skiing which is as easy as regular paddling. Have a look at this movie: http://www.wavewalk.com/Paddle%20skiing%20on%20flatwater.WMV You can paddle sitting and riding too. And there's sailing, of course - sitting or standing:http://www.wavewalk.com/Sailing%20Standing.WMV This sailing rig is still in an R&D stage and its advantage is you can sail both sitting and standing, but you can use other rigs too. Yoav PS--Frank Hagan got me to agree to help boat builders on Messing-About to design their own versions of W boats.
  6. Ernie, The W1 is basically a paddle craft and the sailing rig is an accessory I'm testing with the intention of offering it sometime in the future. Paddle-hopping is certainly more difficult than regular paddle skiing or paddling -It's fun and a great workout You can watch more funny demo movies here: http://www.wavewalk.com/DEMO%20VIDEOS.html Yoav
  7. http://www.wavewalk.com/Jump-Paddle%20Skiing%2001.WMV Enjoy! Yoav
  8. That 15 footer was indeed somewhere between 80-90 lb but although it wasn't easy I managed to deal with it alone, including hoisting it on top of my SUV. I think the W boat concept could work well with outboard motors: The narrow hulls don't generate too much residual resistance even as speed increases, and their flat bottoms would make the boat plane rather quickly- similarly to water skis. Yoav
  9. Frank, I can't remember the last time anyone said about me that I was generous -Thanks! All questions and comments are welcome -Watch the demo videos! Yoav PS-- I really like the "SpellCheck" feature on these forums -Very useful!
  10. Simply messing about in boats is great' date=' and messing about in NEW boats could be even better[/b'] You got it right Frank- Since this thing is still very new (the patent was issued last month) I'm interested to see what both amateurs and professionals come up with while exploring these uncharted waters. I'll do my best to assist both. Yoav Here's an example of a 15' experimental model of W boat that I created by welding together two W1s. It was faster and more stable than the W1, and had 50% more load capacity. Something like this with hulls twice as wide would have 3 times more load capacity than the W1, benefit from very good directional stability, and make a nice sailing or motor boat while its passengers could still paddle it.
  11. Thanks Frank, Indeed, paddling is done the way you describe it. There's no rudder in this sailing configuration: The long and straight hulls serve as daggerboards and you steer by leaning into the turn, playing with the sail and occasionally dipping the paddle - It's quite easy. We haven't tested the W1 with another sailing rig except this one so it's possible that another type of rig would require a rudder. Longer / bigger models are likely to require some kind of rudder. Wood and plywood look good for building W boats. Generally, these boats tolerate straight lines and flat surfaces. Yoav
  12. Hello Frank and everybody, I'm a small-boat designer from Newton, Massachusetts. I'd like to introduce to you a new small-boat concept for which I recently got US patent #6871608 "Twin hull personal watercraft" (AKA W boat). It allows for boat designers and builders to create boats that have some advantages over traditional small-boat forms. Such new boats can vary in width from 2' to over 3', and from less than 10' in length to over 20', with hulls as narrow as 6" or wider than 1'. The general form can be "open" like a canoe or dinghy, or "close" like a kayak. Applications for such boats can be from paddling and rowing to sailing etc. All materials and building methods used in other small boats are suitable for making these new boats. I'm already manufacturing a small, plastic W boat called the W1 that's based on this concept. I'm looking for designers and boat builders (including amateurs) interested in developing their own versions of W boats. Personally, I'm interesrted in seeing W boats that are longer and generally bigger than my 10' W1. The attached images show some things you can do with the W1. Longer models will be faster and more stable, and have a bigger load capacity. Longer designs with wider hulls could fit a new range of applications. You are all welcome to make comments, ask questions and request additional information Yoav
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