• Announcements

    • Zapata

      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.  


  • Content count

  • Joined

  • Last visited

Community Reputation

0 Neutral

About A3A

  • Rank

Recent Profile Visitors

3,662 profile views
  1. Re-Cut head sail

    I've done dozens of these, bigger and smaller, all types of sails. C-Cut Dacron, no problem, you can get a triangle with some shape. Cloth weight may not support use in 130% conditions if you plan on using it as a #2. Any radial cut, it gets expensive to do. You spend the dough to have it done right which involves opening the joiners and moving the sections around to get the geometry right. Age and condition of cloth critical to success. You can also do the quick and dirty and hack off an edge. Save the bucks up from but the sail will be a shitter. Total WOFTAM to even try on a string sail. 3Di may have more possibilities, but it wouldn't be cheap to do right. Bottom line is if all you need is a simple triangle and the fabric is in good shape. give it a go. Anyone that races with a sail like that will get spit out the back by any boat with a sail properly designed and built to fit.
  2. Spinnaker cloth Airx v Superkote

    You need to have your sailmaker look at what you've got. If in fact you have two .75oz sails and you are racing in the Seattle area, then you're going to need a sail that is optimized for 90-120 AWA (best VMG under 8-9k) using "Half Ounce" material in your terms. As I said, the only noticeable difference between the Airx 600 and the Superkote 60 is maybe how they handle sloppy conditions. You couldn't test the difference in fabrics, but a lot of trimmers prefer the SK in the bump.
  3. Spinnaker cloth Airx v Superkote

    Cloth weights and deniers are not the whole story. What you can't tell without some expertise is that there are a lot of tradeoffs made to hit weights. Contender has 4 styles with 30x30 construction with weights between 36 & 43 grams. A basic law of sailcloth is that you can't make it lighter unless you leave something out. It this case, some tiny savings might be due to finish, but most are due to leaving out a few picks (yarns per inch) in either the warp or fill. On radial sails, fill yarns are less critical, but some of these drop warp yarns and that results in a weaker sail. Airx and Superkotes of similar weight are generally pretty similar in performance. The Airx has a slightly firmer finish and a lot of trimmers think it's less stable in bumpy conditions. Sail codes are pretty generic representations. It's critical for the Client and Sailmaker to listen to each other and be clear on what the sail needs to do first, then decide which "Code" it should be. The client should start with what sails he has and the wind angle and speed ranges he thinks they cover. Then he should define what he expects the new sail to do the most. That will heavily depend on his local conditions and the boat type. With a vague recollection of sailing Olson 30's, I can make some pretty educated guesses: In 8k of true wind speed, the target is around 140 TWA with boatspeed around 5.5k. That results in a 97 degree AWA with the sail feeling only 5 knots or pressure, In 12 true, the target TWA goes to around 160 with the speed around 6.25, so the sail feels 140 degree AWA and 6 knots of pressure. In lighter wind, the AWA will get tighter, but the sail won't feel much more pressure. Overall, either the Airx 600 or SK 60 will be fine as a medium runner / AP spinnaker.
  4. Containers at sea

    In over 50 years of sailing offshore, I've seen a floating container exactly once, about 20 years ago. About a third of the way to Hawaii, floating with about a meter of one corner exposed and some metal wreckage that looked like part of the tie down system poking up. We were in near calm conditions and actually sailed over to it to get a better look. If it was dark and you were surfing, it would have been like a can opener. I found this exchange from the May Seahorse interview with Marcel van Triest very interesting and equally frightening as the threat of lost containers: SH: And other obstacles… MVT: With Idec I occasionally gave them positions of oceanographic buoys – which they had no idea were out there. These are not on any chart and after I sent an image of one to Francis, he said, ‘This is really dangerous, they are like small icebergs!’ He was off Brazil at the time and said, ‘No doubt some small sailing boats have been lost in the name of science…’ SH: Fascinating – and frightening. MVT: So if you hit one of these steel buoys when you are doing 35kt you have an issue. If you look at the number of buoys floating around the world at a set depth, say at 1km down for a week then down to 2km then to the surface, it’s scary… there are over 100 of this type alone. I sent a screen shot to Idec of all the oceanic observations carried out in December from this kind of buoy, and it is a pretty dense pattern around the world. And these are not accounted for, they are drift buoys and just pop up at random. If you hit one with your foiling monohull, that is a UFO.
  5. PHRF Blows

    PHRF would work just fine if the owners were the handicappers and didn't put themselves first. But that ain't gonna happen. As DC once said, "Bet on self interest, it's always in the running". Seriously, way too much focus is put on the scorecard. Without fully measured boats and regular compliance checks on the fleet, it's all a joke. Take your boat and your friends and go sail the course to the best of your abilities. If you can look back after finishing and say you sailed the boat well, did a good job with the shifts and performed all of the required maneuvers without making mistakes, then you had a great day. Take that to the bar and celebrate. If there are areas you feel your lacked, target them for the next race. When you get to the point where most of your races are good days but you aren't getting on the podium, then you can look at two things; are your sails and gear up to snuff or is it your rating that holds you back? Back in the heyday of IOR, the Chicago YC had a scoring program that calculated the rating needed to have won for each boat. It was pretty rare that it was a matter of shaving a couple of tenths of a foot of rating that would have changed positions.
  6. 3Di Endurance experience (other options?)

    Ask Thomas Colville about durability and reliability. At the finish of his just completed solo record around the world, Sodebo's 3Di Endurance mainsail now has 75,000 miles on it. That's more than your J-109 will sail in it's life. He had enough confidence in a sail with 45,000+ miles on it to risk his entire project on it at the start and was proved correct. Sure, the 3Di product cost more initially, but if it's 30% more than the offering from another sailmaker but it lasts twice as long, you win. Contact Jack Christiansen at the Seattle loft and ask him about the 3Di product in development specifically for smaller cruising boats. It will address all of your concerns.
  7. Bungy kite take down?

    i thought that you could use bungy for sail retention. maybe it could be argued that this is a kite retention device? Well, that was 1984 and the interpretation of the rule was that you were using the stored energy of the stretched bungy to enhance performance. Like many rules today, it would probably be ignored now.
  8. Bungy kite take down?

    Oh, it works. Tried on the Mull 82 Sorcery back in 1984. Multi purchase bungee stretched from the owner's cabin bulkhead to a snatch block at the forward hatch. Takedown line from the kite dead ended at the stem, so with the snatch block clipped on, it formed a 1:2 reverse purchase. It took a couple of guys to cock the bastard. When triggered, it fired down the length of the cabin and sucked the kite in nicely. The snatch block also punched a hole in the aft bulkhead. The bigger issue is it is considered stored energy and ruled illegal under the RRS 52.
  9. The ships are their buildings! (and me and the rest of the geeks thank you, A3A, for some star wars for the front page). Now they're really screwed; they're liveaboards. They'll get kicked out of every system they try to make a home in.
  10. It seems the rebel fleet is an unlikely match for the Imperial Fleet. The rebel ships all seem to be moderate to heavy displacement keelboats, At least some have bulb keels, but I didn't see any canters. By virtue of the massive wealth of the emperor, the Imperial fleet seems to be large light displacement skiffs and lots of small foilers with variable wings. It's plain to see whose going to win this race. Seems vaguely familiar to me.........
  11. Why are you using head/clew slugs for your luff slides?

    The boats are strong enough, but the crews won't go because they're f'ing miserable to live on for more than a day. That's part of the reason they faded from their birthplace as TransPac racers and morphed into day sailors in the Med.
  13. upgrade Square-top mainsail

    Square Top mains depend on a pretty stiff spar. The standard Corel rig might not be stiff enough to provide good control in order to get maximum performance out of the sail. You may need jumpers to control the bend in the top. Newer carbon rigs have laminate stiffening to do the job, but in 1996, Carbon spars were still in the early stages of development. It wasn't until the 2003 America's Cup that the rigs got enough fore and aft stiffness to allow the square tops to twist correctly. But they were damn big heads and a IRC square top probably wouldn't be as hard to control.
  14. Interesting Platform

    So it's a Quadamaran?
  15. New Sails... Your experience?

    You are not really comparing the same products here at all. The Ullman and UK products are membrane string sails. Then you've listed North's cruising paneled laminate which is essentially a tri radial version of their Marathon construction with aramid warps and polyester taffeta on both sides. You don't mention a sailmaker for the DP BX product, but that would be a tri radial as well and without taffeta. So your comparison is with two products with taffeta on one side, one with it on both sides and one with none. Taffeta doesn't provide any significant load carrying in these constructions, but it does provide some UV and abrasion protection to the aramid structural yarns. Only having it on one side limits that protection a bit. They will tend to last longer than film sails because they reduce the tendency of films to crack on creases, but they do add a lot of weight. A better comparison of a North product to the Ullman and UK would be the 3DL Race 600 with Performance TF film. Be sure to ask about dpi and how it is measured in all three products. With string sails, one way to make them less expensive is to use less material and that isn't a savings in the long run.