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      Abbreviated rules   07/28/2017

      Underdawg did an excellent job of explaining the rules.  Here's the simplified version: Don't insinuate Pedo.  Warning and or timeout for a first offense.  PermaFlick for any subsequent offenses Don't out members.  See above for penalties.  Caveat:  if you have ever used your own real name or personal information here on the forums since, like, ever - it doesn't count and you are fair game. If you see spam posts, report it to the mods.  We do not hang out in every thread 24/7 If you see any of the above, report it to the mods by hitting the Report button in the offending post.   We do not take action for foul language, off-subject content, or abusive behavior unless it escalates to persistent stalking.  There may be times that we might warn someone or flick someone for something particularly egregious.  There is no standard, we will know it when we see it.  If you continually report things that do not fall into rules #1 or 2 above, you may very well get a timeout yourself for annoying the Mods with repeated whining.  Use your best judgement. Warnings, timeouts, suspensions and flicks are arbitrary and capricious.  Deal with it.  Welcome to anarchy.   If you are a newbie, there are unwritten rules to adhere to.  They will be explained to you soon enough.  

flutter

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  1. for anyone who may have missed this - this thread made me think of it somehow!
  2. you can watch this in VR with a google cardboard viewer + iphone / android and the youtube app. i hope theres more content like this!
  3. requires a pretty good pivot point! + like T foil rudders, they would be trouble to raise and lower at speed + you drag both the lifting and side force surfaces around whether foiling or not anyway.. what do you reckon the advantages are over the current setup? - that you get a more efficient daggerboard for upwind sailing etc?
  4. ha yep! we have not seen anything like that before! waste of materials and massive environmental impact etc. but.. definitely not like anything else..
  5. Sarah Gundersen!
  6. Your description of the structure would be accurate IF the bowsprit was a beam .. but it is NOT a beam .. The loads applied by the headsails are supported by the rigging while the bowsprit supports the eccentricity as a column . Round tubes are the most efficient shape for a column and this only changes if a bending moment is applied or if the member is required to serve some other purpose such as a walkway .. The triangular shape might also help in a pitchpole situation . Its not a column either. i.e there are no stays that support the tip horizontally. EDIT: ahh, maybe there are... ok you might be right. In a pitchpole, think about it. what is that angle of attack of that flat top surface to the water? -5 degrees? it will only help you go over faster. hence why the hulls are pointy on the top. Maybe its for spray / waves when sailing normally, or, as you say, a flat walkway
  7. smaller section size doesn't necessarily make a lighter tube. Wall thickness decreases as diameter increases, so there's a crossover point somewhere, I'm sure each team is pretty tuned in to that and have optimised their tube sections for the specific loads and target stiffness. The triangular section I imagine is stiffer in the important directions than a round tube of similar weight. The load at the front will most likely be similar to the other boats, though with a thinner 'egg shell' wall might, counter intuitively, make the tube a bit more fragile.