Blur

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About Blur

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    Super Anarchist
  • Birthday 08/02/1966

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    peterinserve
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    http://www.blur.se

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    Sweden

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  1. A good starting point to figure out the target speeds is to start out with an ORC Speed Guide. Find a similar config to what you got below, add 4% to most numbers (at least upwind) and then iterate from there. https://data.orc.org/public/WPub.dll/CC/113898.pdf https://data.orc.org/public/WPub.dll/CC/115946.pdf https://data.orc.org/public/WPub.dll/CC/120802.pdf That would result the following upwind numbers w a big genoa (5-6% faster than those in the brochure). Yup. To much time and no life
  2. Blur

    J/111 sail configs in ORR?

    No hurry. We'll spend 2020 in the Med (Rolex Giraglia Cup + Copa del Rey), but it's great to have a long term plan for both the team and the sailmaker. Looks like a 55% half-width to foot ratio Code 0 will fit the LHR definition rather nicely. From my understanding, ORR tries to rate any LHR as "fairly" as possible, which makes the choice easier. The J/111 build lot's of apparent speed in light air so the 75% IRC code isn't working very well. 55% have worked very well, and we're fine with the smaller area. The J0 with 51% is not an LHR (LPG = 1.03*JLRH) but could be a large headsail. But I guess that would increase J to the new tacking point and would affect the rating in a disproportional way. In the ORC VPP, it doesn't affect upwind speed which is kind of a loophole. The number of sails seems fine. Thanks for the useful info!
  3. Blur

    J/111 sail configs in ORR?

    Newport-Bermuda (and the 1-2 race), Chicago-Mac, SF Big Boat Series & Transpac are on the list. No firm plan. Blur is not in OD mode (jibs to big, main to small & some minor details), and our primary focus is distance races & ticking off the big ones. Naturally, inventory/rating can/will change depending on race, but I'm trying to understand the big picture here - especially on what's not on the table,
  4. We’re evaluating some US races and are trying to understand yet another rating rule (after IRC, ORCi, SRS (Sweden), NOR Rating (Norway) and DH (Denmark). We like to optimize for max speed/fun and maximizing our already strong light air performance. But also be rated "fairly" and don't cross any magic boundaries We have the possibility to do some configuration based on our inventory and what’s considered smart or overly penalized. a) 130 m2 A2 (one-design) vs 155 m2 A2 ”whomper”? Are ”oversized” downwind sails penalized, or a smart move in light wind areas? b) jib 0? 51% half-width tacked w furler 1 m in front of forestay. 42 m2 vs 34 m2 for standard J1. Depending on rule, can be measured either as a big headsail (without too much penalty) or a small code. Works well in ORCi but big no-no in IRC. c) Code half-width sweet spot? I’ve seen the ”tweener”-articles, but are there any reasoning on a sweet spot between 50-75% on Large Roach Headsails (LRHs)? We currently race with a 70 m2 55% code under local rules and replace it with a used 80 m2 76% for IRC racing (an awful sail). d) number of headsails Any ”threshold” or max number to be aware of? Today we run J1, J2, J3.5 (heavy weather jib) and staysail. e) number of downwind sails Any ”threshold” or max number to be aware of? Today we run 3 nylon avsys + code = 4
  5. Blur

    J/99 vs. J/111 for DH racing

    For us that wants to be informed, I'm sure you have some links to results?
  6. Blur

    J/111 staysail

    The standard jib would not be as efficient in this range. But the staysail tacked just aft of the hatch gave us almost nothing, 1-2% in optimum conditions. Tacked further aft, and sheeted properly we get 2-3% in many conditions/angles.
  7. Blur

    J/111 staysail

    Just a 15 cm diameter carbon backing plate. The load should be fairly low.
  8. Blur

    J/111 staysail

    We did lots of work with the staysail on the J/109, and it was very efficient in most conditions. We tacked it to a padeye just aft of the anchor box locker. With the same setup on the J/111 we got almost no effect. Distance from the gennaker tack to the main on the J/109 is 4.05+1.67=5.72 and on the J/111 4.22+2.43=6.65, 16% longer. We tried several different tacking points, ending up quite far aft. As seen on the photo, it’s about 100 cm aft of the previous padeye and 50 cm in front of the hatch. The main effect of the staysail is to increase the flow on the back of the main, and the bigger STL on the J/111 makes the geometry quite different compared to most boats. You can see the same thing on many bigger modern boats, where the staysail ends up closer to the mast. Now we’re getting 2-3% speed increase in most conditions, so well worth the effort. We run the staysail from TWS ~6 knots up to 18 knots, when we’re planing and keep the jib up instead.
  9. Blur

    J/111 Goes Sailing...

    Winter inspiration...
  10. Blur

    Why hasn't a J/111 raced to Hawaii yet?

    I got British Solider's "RBIR Lessons Learnt" and that was a proper shakedown, and I was surprised they didn't break more things... Blur now got >15.000 nm on her log. Most of them with the pedal to the metal. Or as my insurance company said when the mast track came off last year; "we've seen your videos"
  11. Blur

    Why hasn't a J/111 raced to Hawaii yet?

    We've done both Fastnet, Middle Sea Race and a number of other offshore races w #69, and think it works reasonably well. Wouldn't think twice about bringing it to Hawaii. I got three pieces of advice from the guys who did Round Britan and Ireland in one (and encountered three storms along the way); "keep it dry, keep it dry, keep it dry" We've sealed the bow hatch (anchor locker), built a decent "race sprayhood" over the companionway and put a canvas "wall" to separate the navstation from the companionway. This keeps the boat dry, and the bilge pump might run for a few minutes at the time even in really rough weather. Naturally, you can't beat the thrill of a J/125, but I'm pretty confident that we could give a J/121 a run for the money downwind in 18-22 knots of wind. And looking at the results from the last Transpac, you should have a shot at winning your class? We have some logistics to get to the west coast, so we might have to wait to 2023
  12. Blur

    idiots in power boats meet regatta, video

    It's been done for many many years, and the direction around the island changes depending on wind direction. To make the passage as painless as possible for everyone. Hasn't been a problem until now.
  13. Blur

    J 121

    Can't see why that would be faster/better than a normal takedown w full crew? Chance of twisting the chute is greater as the tack comes aft first and needs to be sorted. Also, another line to get stuck when prefeeding for the set. I can see the benefits solo for a companionway drop, but less control of the sail and marginally less chaos afterward. Plus needs to be re-routed in 50% of the cases. Pretty much the same issues I have with the tack trip line. Smart - but sometimes less is more