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About ice9a

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  1. ice9a

    Line winder/reel for small diameter dyneema

    >>If I painstakingly put it into a bag from the back to front, it comes out OK The trick for 'tangle-free' bags is they should be 'tall and narrow' - eg the opposite of a duffle bag shape. If they are quite tall and narrow you can just stuff in and it will come out smoothly and tangle free. They should be at least 3:1 (height to mouth) ratio, and 4:1 is better. A (properly shaped) bag is a ton lighter and easier to stow than a reel. I sew them with a wire around the mouth to hold it open (actually just a little down from the top edge so you can still have a drawstring around the end to close it) - but that is not really needed.
  2. ice9a

    Introducing the "Crown Jewels Soft Shackle"

    for anyone interested in low friction ring strop details/testing - this is now completed - Below is text of last post (minus pics): "Ok, the final round of results on low friction ring strops. I carefully made two endless loops (more careful attention to bury taper than before), with tapered whipping (looser than before to allow strand equalization) - and got 19,000lbs (352% of strand strength) and 18,000lbs (333%). They both broke on the 3/4" pin. The whipping did not break nor slide. The stronger broke 24/24 strands on 1st sample and 22/24 in the second (pic below) which shows decent strand equalization. So lesson learned - Strength here is mostly about good careful splicing (bury, taper, and strand equalization) and not so much about exactly which design is used to capture the LFR - however, the tapered whipping IMHO offers the least complexity to achieving that good splice hygiene (especially the strand equalization). You can almost double the strength by taking great care (I was still using only the tools a DIYer would have, for instance, did not use hydraulics to pre-set/tension/equalize). But even the 'average care' samples were still greatly strong, strong enough for most yachting applications. I personally would not use the 'cow hitch to ring' design, but all the other main options are perfectly reasonable. My personal favorite is the double loop with tapered whipping - but I sort of like the art of whipping. Then we pulled three webbing samples - two with Dyneema stitching to capture the ring and one 'loose'/basket style on the ring. They were all extremely consistent 10,000-11,000lbs - interesting the stitching to capture the ring did not affect the strength noticeably. These are dead easy to make (climbing loops where the main/critical joining stitching is already done at the factory), highly reliable, less sensitive to bend radius on like small bail padeyes than using rope. Seems like quite an efficient solution for someone who just wants to get the job done well and is not totally in love with rope work. Finally, I did two more of the bullseye soft shackles, using extra care to get strand equalization. The diamond version went to 155%, still lower than I can make a diamond soft shackle probably because I still find the strand equalization trickier with the low friction ring in place. And the Button (with bury) was 200% again a bit lower than my usual shackle result. But both are strong (enough for almost all applications) and do offer easier attachment/moving around. I think that completes the LFR strop survey."
  3. called an estar shackle (after the guy who came up with it) - invented right here on SA. The button with bury is a bit better construction, but this one is easier.
  4. What? The required permit is for a specific event, which has to be described in some detail in the application. So it is very clearly a state permit for a racing event. And Maritime Queensland very clearly knows that sail races are conducted under the RRS - these are the official rules of the state recognized authority for sailing racing. So, all of this is very clear and very clearly state recognized and permitted. Now if you are saying that the state is requiring permits which violate its own laws - well that is a different kettle. That's the state's problem in court, not the OA's nor the participant's problem (who have all agreed to follow the RRS) - they have done what was required by the state to run their event per their rules.
  5. Since they have a permit from the state specifically permitting racing, and the specific rules of racing (which I quoted above) allow the OA to decide. You can dance on the head of a pin all you want, but if it went to court that is the only logically consistent decision.
  6. so you are certain that: "a. Between the times of local sunset and sunrise, RRS Part 2, WHEN BOATS MEET is replaced with Part B, Steering and Sailing Rules of the International Regulations for Preventing Collisions at Sea (“IRPCAS”)." is not text from a pretty prestigious race's SI? lol
  7. yes, correct. It is not uncommon for SI's (of offshore races) to state that colregs will apply at night.
  8. are all the races conducted using the WS RRS? If so, and the SI's don't have a specific prescription re part 2 - then it's pretty basic between racing vessels and non-racing vessels the colregs apply; and between racing vessels, the RRS apply. "The rules of Part 2 apply between boats that are sailing in or near the racing area and intend to race, are racing, or have been racing. However, a boat not racing shall not be penalized for breaking one of these rules, except rule 14 when the incident resulted in injury or serious damage, or rule 24.1. When a boat sailing under these rules meets a vessel that is not, she shall comply with the International Regulations for Preventing Collisions at Sea (IRPCAS) or government right-of-way rules. If the sailing instructions so state, the rules of Part 2 are replaced by the right-of-way rules of the IRPCAS or by government right-of-way rules." If they are not using the RRS, then who knows - you would need to produce the rules they are using.
  9. Just FYI - pull test results on various LFR strop designs:
  10. ice9a

    Race boat flooring

    Core options (from here, great guys but really expensive): Sandwich Products Stiffness to Weight Toughness Crushability Moisture Resistance Birch Core BETTER BEST BEST GOOD Balsa Core BETTER GOOD BETTER POOR Nomex Honeycomb Core BEST GOOD BETTER BETTER Depron Foam Core BETTER POOR POOR BETTER Airex Foam Core BEST GOOD GOOD BETTER Dinvinycell Foam Core BETTER BETTER BETTER BETTER Last-A-Foam Core BETTER BETTER BETTER BETTER Dyneema Core GOOD BEST BEST BEST Kevlar Core GOOD BEST BEST GOOD
  11. Quick plastic rod primer: Use Outdoor Hardness Tensile Slippery low Water absorption Delrin / Acetal No Hard (R117) Good (8000psi) Very Good Good UHMW No Medium (65D) Poor (4500psi) Very Good Excellent black nylon Yes Hard (R110) Good (10000psi) Very Good Poor PEEK No Hard (R126) Excellent (15000psi) Good to Vary Good Poor PTFE Yes Medium (55D) Poor (3000psi) Very Good Excellent Garolite No Extra Hard (M115) Excellent (40,000psi) Smooth Good Polyester Yes Hard (M95) Good (11000psi) Very Good Good Good source:
  12. ice9a

    Antal Hook

    ah yea, I was thinking of the case where you wanted to be able to move the line to different locations, rather than where you wanted to change lines.
  13. ice9a

    shroud tensioners F24 Mk1

    Lets start with your 1500lbs as max working load. apply a 3:1 safety factor and you have a 4500 lb max load. Taking some angles from an internet sail plan (pic below) and doing the simple trig, that would mean 1341lbs load on the adjustor system. You say you want to go with a 5/16 line on the tackle/cascade line - warp speed (dyneema core) 5/16 is 6200lbs so way strong enough, and 5/16 XLS33 (polyester core) is 4100lbs so still good. Your 45mm fiddle harken will also work. There is certainly an argument to use a cascade, but that assessment would depend on your needs for throw (cascade shorter) and friction (cascade higher) - but I guess it would work just fine. You could use blocks for the cascade (less friction, more cost) or low friction rings (like antal 7mm R07.05).
  14. ice9a

    Dyneema lashing? Knot and SWL?

    Kellyanne Conway is a YouTube rigger? Who knew. Alternative facts absolutely rule ofc. It's all good if you just get the secret 100,00lb test sewing thread they used to lock stitch the 1" tow line burys.
  15. ice9a

    Antal Hook

    low friction ring plus soft shackle strop = same as antal hook a lot less expensive and any size you want (any size LFR exists for which is a wide range). You can make the soft shackle with a toggle (rather than diamond/button) if you want to duplicate the antal almost exactly.