Landon Posted October 4, 2016 Report Posted October 4, 2016 Looks great! The appliqué is really unique, I like it! Quote
Zuul Posted October 1, 2019 Report Posted October 1, 2019 On 9/19/2016 at 4:01 PM, makatakam said: You may find that the leading edge of the sail flutters at higher speeds. If so, you can slip a very small diameter carbon rod into the seam to eliminate the flutter, or sew a stiffer material strip along it. See the photo I posted, the LE is attached to the front and back on this design for that purpose. I am also making a second kite where it only attaches to the front. Expand Can you elaborate a little on this? Is it because there is no mesh in the "vents"? Quote
Wayne Dowler Posted October 1, 2019 Report Posted October 1, 2019 Got a feeling it would work similar to the leech line on a dualie. Loose and the edge vibrates, tight and the sail gets quiet. Mesh to some degree "regulates" how much air escapes, no mesh means it spills faster - no resistance. IMO Quote
makatakam Posted October 1, 2019 Report Posted October 1, 2019 On 10/1/2019 at 3:09 PM, Zuul said: Can you elaborate a little on this? Is it because there is no mesh in the "vents"? Expand Yes. A loose edge will flutter, whether it's the leading or trailing edge. The leading edge must be either tautly stretched or otherwise stiffened to avoid this. The span of cloth between the tabs also affects how easily it will flutter. The shorter the distance between them the less chance of flutter. Sail harmonics will also come into play at some speed, but that's a different subject. Search New York Minute flutter or NYM flutter on this forum if you want to know more. Quote
Zuul Posted October 1, 2019 Report Posted October 1, 2019 On 10/1/2019 at 5:18 PM, makatakam said: Yes. A loose edge will flutter, whether it's the leading or trailing edge. The leading edge must be either tautly stretched or otherwise stiffened to avoid this. The span of cloth between the tabs also affects how easily it will flutter. The shorter the distance between them the less chance of flutter. Sail harmonics will also come into play at some speed, but that's a different subject. Search New York Minute flutter or NYM flutter on this forum if you want to know more. Expand OK. I went back, looked at your design, and understand what you mean now. Makes complete sense when you think about it. I just didn't think about it until you pointed it out! Is the leading edge on yours dead-straight like it's shown in the illustration? Or is the picture "not to scale" for simplicity? Quote
Wayne Dowler Posted October 2, 2019 Report Posted October 2, 2019 Looks to be a flat pattern, not a "flying" setup. Notice the dotted lines showing a regular 1.5, very much smaller. I would guess putting caps on would introduce some flex in the LE. Quote
Zuul Posted October 2, 2019 Report Posted October 2, 2019 On 10/2/2019 at 2:41 PM, Wayne Dowler said: Looks to be a flat pattern, not a "flying" setup. Notice the dotted lines showing a regular 1.5, very much smaller. I would guess putting caps on would introduce some flex in the LE. Expand The typical rev-style sail has a curved LE pocket as sown (i.e. flat pattern). That's not to say a straight LE won't work, it's just not how most are designed. 1 Quote
makatakam Posted October 2, 2019 Report Posted October 2, 2019 On 10/2/2019 at 2:57 PM, Zuul said: The typical rev-style sail has a curved LE pocket as sown (i.e. flat pattern). That's not to say a straight LE won't work, it's just not how most are designed. Expand The pattern shown is straight, but it is a computer-generated illustration. It is a flat drawing as opposed to a cutting pattern. The pattern for the build does have a curved leading edge. P.S. -- I'm not sure if you guys are talking about the banana kite or the drawing I posted. I'm talking about my drawing, but it looks to me like Wayne is referring to the banana and Zuul is talking about my drawing. Hard to tell and confusing. Quote
Zuul Posted October 2, 2019 Report Posted October 2, 2019 On 10/2/2019 at 4:22 PM, makatakam said: The pattern shown is straight, but it is a computer-generated illustration. It is a flat drawing as opposed to a cutting pattern. The pattern for the build does have a curved leading edge. P.S. -- I'm not sure if you guys are talking about the banana kite or the drawing I posted. I'm talking about my drawing, but it looks to me like Wayne is referring to the banana and Zuul is talking about my drawing. Hard to tell and confusing. Expand Yes, I was talking about your drawing. I suspected that the drawing was not how the kite was cut, but figured it didn't hurt to confirm. Quote
Wayne Dowler Posted October 2, 2019 Report Posted October 2, 2019 Nope, was talking about the drawing also. Quote
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