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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.  

carcrash

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About carcrash

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    http://www.Westlawn.org
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    Waikiki YC, Grenada YC, LA, NY, and Maine

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  1. Inner Dyneema Forestay Tensioning

    Storm jib has same load as max load on your #1 or blade, because the load is a function of stability.
  2. 3Di sail needs a recut?

    I just spent the day at the Minden facilities. Very impressive! An entirely new way of making custom vacuum bagged heat cured one piece high modulus or dacron sails. The sails are each custom designed, with tape properties and layout unique to that sail. They make the tapes right before using them to make the sails. Then they make big custom pieces of cloth from multiple layers of tapes, with scarfs on the enges where they will overlap. They make these huge tables take a 3d shape of the flying sail. Then they put these big pieces of multi-layer custom cloth together on the forms. Humans do this, but the custom multi-layer pieces are specifically created so they fit together, structurally, perfectly. Then its all vacuum bagged (and the vacuum bag is also custom shaped for the specific sail), and heated under lamps to achieve a specific temperature to set the thermoset glue (not thermoplastic - it wont re-melt). The fabrication can happen in an hour or three, depending on the size. Then the sails need to post cure for a week. After the week of post cure, final finishing, which also occurs amazingly quickly. Its truly amazing to see custom composite structures made so quickly, and the only inventory is the spools of thread, barrels of glue, backing paper, and vacuum bag material in bulk. In a few hours while I was there, they laminated the full one piece sail cloth for a couple of headsails for Comanche; a main, mizzen, code zero, and a couple of headsails for a 65m superyacht (!); a main for a 40m Dixon; a headsail for a 30m Dixon, and a Nordac headsail for about a 45 footer. About a dozen other sails were being finished at the same time, including the main for some enormous beast: about a ton of carbon and dyneema! The efficiency of that factory is out of this world! Wow!
  3. Rigging, Wire vs Dyform vs Rod vs Syn (dux)

    I have seen wire fail that quickly at the swedge. Happens all the time. Its the swedge, not the wire, but too bad, its toast. That is why swedged wire has such a short life: water gets in, without air, so the SS corrodes. Its called crevis corrosion. Does not always happen, but it is quite common. A good reason to go with dyneema is its way easier to handle, especially if you trailer the boat from time to time. Also, its much easier to tell if something is going wrong. Use lashings, not turnbuckles. Then the difference in length is no big deal. Your ULDB boat will creep as much as dyneema, so you will need to tune regardless of rigging. You will always tune on the leeward shroud, so lashing is not a problem. Size dyneema for stiffness, not strength. If you size for strength, its probably annoyingly stretchy on a monohull. Don’t go overboard and size for creep: your boat willl creep too.You need to tune occaisionally, no big deal. Size it so its as stiff as rod: double the strength of rod or wire and you are good.
  4. Barn Find Cal 40

    Re the 180% comment: Tacking those things was a major pain. I mean, we didn’t complain because they were cool boats and we were teenagers, but I’d never do it again. It was all a CCA rating ploy, not something actually sensible. Like nearly all boats raced under rating rules, especially half a century ago, they were well under canvassed. Modern boats without overlapping headsails make way more sense: more drive (better lift to drag) for a given amount of sail cloth (money). Re the plywood on Cal boats: you should check its condition. That isn't hate, its just a heads-up. I am not a hater, by the way. I really love those boats. I am just pointing out the issues that are usually glossed over. Go into a refit with one’s eyes open and a lot more cash than you think.
  5. Santa Cruz 33

    Loking good! A little structure can go a long way.
  6. J-34 IOR

    At least 55!
  7. Diva 39- Any Experience?

    The ability to easily access structure is a very important attrbute of any boat.
  8. Barn Find Cal 40

    I have sailed something like 13k miles on a Cal 36, and of course several times on Cal 40s and much of the other Cal boats. The Cal 36 has almost identical lines to a Cal 40, almost identical abilities when seas get tough. They have very good handling qualities, but I would definitely recommend a new better rudder (contact Finco Fabrication as mentioned above). The stock rudder was a heavy helm and stalled suddenly, as anyone will remember well. They are wet boats, as they have very low freeboard compared to modern boats. They sure pound upwind a lot worse than an S&S or most anything cruisy. These boats were very sticky in light air. The mast is almost comically too short. I would raise the mast by at least two meters, maybe four. Then you won’t need a 180 genoa, which was the norm on these boats and important up to about 18 fucking knots of breeze. That is the hateful part of these boats that people work hard to forget. There are always potential structural issues on any boat. If its 50 years old, expect them. The beam under the mast has been mentioned. I would be very surprised if it did not need to be replaced (unless it was already done in SS). Many have been replaced. Dennis Choate did one recently. I have not personally fixed one, but I did fix the similar one on a Ranger 1-Ton after a structural failure in heavy conditions. Not hard. Cut some almost nonstructural glass across the top and forward side of what looks like a fiberglass beam under the mast, remove and replace the beam and bolts, glass the cut bit back in, sand, gelcoat, polish. You'll have to remove the head and mast first of course. On the Ranger, fabricated the new beam of multiple pieces of aluminum so it was easier to install, as that much steel in one piece is a bitch. Alloy was a piece of cake. Lots of plywood in those boats: the whole deck core, deck beams, cockpit supports, keel bulkheads (very critical and very possibly soggy).
  9. Gitana 17 on Foils

    Clearly, hydrofoils DO NOT work as well in practice as they do in theory. I don't think this statement can really be argued. The question is: CAN hydrofoils be made to work as well in practice as they work in theory?
  10. Staysails

    Here is how the maximum lift increases with more and more foils: Well, adding the 8th foil (7th slot) made it worse in this case. This is an example of how its possible to get it wrong too, even if you know what you are doing.
  11. Staysails

    High Lift Aerodynamics, by A.M.O. Smith, Chief Aerodynamics Engineer for Research at Douglas Aircraft Company presented as paper 74-939 at the AIAA 6th Aircraft Design, Flight Test and Operations Meeting, Los Angeles, Calif., August 12-14, 1974 "The author attempts to prove that an airfoil having n+1 elements can develop more lift than one having n elements. Handley Page investigated this problem, up through 8 elements. Figure 4 shows one of his extreme airfoils, a very highly modified RAF 19 section, positioned at the angle for maximum lift."
  12. Fast and boats? Fast and rockets! The fastest boats are slow compared to other modes of transportation. It can't simply be about pure speed. What makes sporting events fun to watch: knowing that its possible for the one behind to suddenly overtake whoever is ahead. Once the possibility to overtake is lost, interest is lost for the spectators. What made the AC in San Francisco exciting was that the slightest error by the leader could always enable the trailing boat to pass. This was because foiling was barely possible, and crashes off the foils caused a sudden huge speed decrease for a few seconds, allowing hundred meter leads to evaporate almost instantly. Also, the large speed difference between upwind and downwind made the lead stretch and then compress, also adding intrigue even if not really meaningful: the leader at the weather mark would stretch out, giving the team and fans a reason to cheer, and at the leeward mark the opposite, giving the trailing team and fans a reason to get excited again. Full, controlled foiling will be very boring, as the speed will be almost identical upwind and down and through all maneuvers, no crashes will ever happen, passing opportunities will not exist. Boring! Planing boats, in partial planing conditions, can exhibit big speed changes depending on doing it right, vs doing it wrong. Overpowered boats near their control limits can also be exciting to watch (and sail).
  13. Blue water performance cruiser - do they exist?

    Every piece of equipment is one more thing to fix. The refit we are doing involves removing everything, and thinking long and hard before installing anything again. Sure, its taking longer -- would have been done long ago if we wanted the same problems as before. This time, things are being installed for easy access, and not for minimal visibility or volume after installation.
  14. East Coast version of a Moore 24

    The key to upwind sailing on a ULDB is, as mentioned, to shorten sail a lot more than you would on most boats. Tiny, efficient jib. Deep reef in the main. FLAT sails! The boats take so little power to move! That is where the "Fast is Fun" comes from. But windage and deep sails will simply stop upwind progress. So no radar, furling headsails, solar farm on a bimini, kayaks on the life lines, dinghy on davits, or the other junk so many cruisers think are necessary but make the boat look like a row of shopping carts being shepherded by a homeless bum.
  15. Blue water performance cruiser - do they exist?

    I am a BIG fan of these things