[quote=southstars2012]Revintage -- I liked the pictures in your BeachCats thread. Thanks for sharing those -- it helps to see the details.
Looks like a great setup, I actually think it's as wide as ours...? (based on how you are sitting -- when we sat our feet touched the hull a bit) I definitely don't think ours replicated a full double-trapeze, which is why we kept the ability to trapeze further out.
The PVC tee fittings you used to connect the different pieces of the wing seem interesting -- might shave a bit of weight (ours were ~0.6 LBS). The fitting weights add-up...!
I also really like the metric 50 OD x2 ID mm tubes, that's very close to the Hobie sizes (50x2mm is approx 1.97'' x 0.079'', vs. Hobie tubes are supposed to be 1.875'' x 0.083'' -- by my math they're about the same weight, and the metric section would be a bit stronger than the Hobie one).
Our wings seem marginally lighter (58-62lbs vs. ~65lbs with yours if I take your 15kg/wing measurement), despite being a bit longer (12ft on the outside). Note I revised upwards our wing weight as I realized I had underestimated the weight of our smaller sections (1.5'' x 0.125'' not 1.5'' x 0.065''). I think you may actually have overestimated your weights a bit:
- The extra tube you use by your feet definitely adds weight (~9-10lbs by my guess, assuming ~9ft per side). Since that's not that structural, I could envision eliminating it or downsizing it to a much smaller tube...
- However our wings would have been ~9 lbs lighter if we had used Hobie or 50x2mm metric sections like yours, instead of the heavy 0.125'' ID sections we had locally.
So net-net they should weigh about the same!
I could see getting the wings down to ~45-49lbs in our design if we used your sections and also removed the forward M32 style supports so the wing was supported up-front by the trapeze wires (using M32 supports only on the back). That would be a very nice weight gain!<!-- editby --><em>Edited by southstars2012 on Nov 22, 2017 - 10:27 PM.</em><!-- end editby --> [/quote]
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