JulianB

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405 F'n Saint

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About JulianB

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    Anarchist

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    Sydney mostly
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    Sailing, eating, designing

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  1. JulianB

    Playing with my 49er - what to do

    Beam wings out = approx 10ft Hull width alone is 1.72m ( meant to be 1.69m = Asian towing width but the late great Ovigy f--kup) Original pin head rig, far harder to help, that will take some digging. Square head we grew 170mm to compensate for the weight reduction, plus we wanted to up crew weight, and that worked near perfcetly. Pretty obviously it's going to be somewhere around 4250, but that also assumes you use the existing fin, which I doubt will be big enough. jB
  2. JulianB

    Playing with my 49er - what to do

    Dose that help??? Those would be CoE's of the jib/main combinations. the new 49er rig and the new FX rig, the 2020 rigs as opposed to the 2008 rigs, CoE won't change. Jib's are ostensible the same, 49er Main is being tweaked but only by 50mm, FX main - no-change. Luff-curves will be different by 2-3mm "probably" (I can't believe anyone can get it that close)
  3. JulianB

    Playing with my 49er - what to do

    Mix & Match. Get a old 49er, and drop a OK FX rig onto it. It fits, no extra work. But your right, there seems to be a up-tick in the hi-end Int/Olympic classes at present, it's not easy! jB
  4. JulianB

    Playing with my 49er - what to do

    Hi Steve, Yes the NS dose have that but they recently relaxed it, and some very wired and wonderful (and I mean that in the nicest possible way before I get pilloried again) shapes have evolved. Got way too much on at the moment, next 3 years are blocked out and I am almost as old as you (but I will never catch you, you can be happy about that), so I14, is a project too far. Rambler, the new CST mast (because Southerns “pulled the pin”) is months away, so post Tokyo, they will all do the big switch. Non-Olympic 49ers are starting now, FX will be close behind, so there will be some great SS FX masts and sails, which will be wonderful, and for a smallish incentive, I am sure they can be picked up. Need to stress, the old SS/North FX mast and sails, have no class limitation re there use, but IOC/WS will require the new CST mast/sail package to be used in Paris onwards. 49er likewise. jB
  5. JulianB

    Playing with my 49er - what to do

    Hi All, and Steve, this is scary, I'm agreeing with you. That can't happen!!!!!!! Some of you are asking me quite particular questions, so I will do my best to answer. The 1st assumption is that you will be using pre-loved 49er hulls, highly likely they have gone soft, and what that means is that the gunwale joint is starting to flex, particularly around the shroud base. There are 2 things you can do to fix that. That most brutal is put a compression strut across the boat, it need to be straight, bit of 50mm (2”) by 2mm WT alloy tube, with some plates welded onto it and then bolt it through the gunwale with say 4 x M6 bolts per side. It will be about 150mm behind the shrouds (if you still want to get the board up) and that’s OK, it will still lock the boat up substantially. The second thing you can do, and this is a bit more tricky, is “in-fill” the gunwales internally. So your shrouds are at the end of the 30° angled frame. The wings are at the end of the perpendicular frame. You get the boat, put it on it’s side with the deck canted inwards, drill a M6 hole through the hull laminate (because its much easier to repair, go buy a dirty big syringe(s) from your local pharmacy and inject some epoxy with has been thickened out with Q-Cell and Aero-cell 3:1 ration, keep it thin enough that it’s easy to inject, and yes there will be 3 injections per side, you will have to re-position the boat 3 times to get gravity to put the bog where you want it. If your worried about saltwater contamination, bit of acetone or methylene-chloride, let it flash off but it will freshen up the surface inside wonderfully. The one going fwd, I have drawn a bit short, probably wants to be 3 times that length (for-aft) and inwards 50mm would make a world of difference. So what am I saying this, because by the time you put alloy wings on the boat, and 50-60kgs of lead and a longer fin/keel, your not going to plane up-wind, so rig-tension is going to be important. Carrying on from the above point, up-wind speed is going to be slower, so you need a longer fin, the present one goes into the water about 1.2m, you are going to need something about 1.6-1.7m. You really want to keep this to a minimum because it will cruel your downwind performance, if it is longer than it has to be. Someone mentioned 50-60kgs, I doubt that would self-right, I have not done the maths and you need to get a NA to do that. 2 completely different issues here, #1 is to slow the boat down, so you have a good time the other (2) is to self-right in the case of the inevitable capsize. I said 40kgs the other day, 50-60kgs will make the boat more pedestrian, and it dose not take a lot to "back it off a few notches". Quite a few years back, on Vivace, we did capsize, and even with 160kgs, it still took 2 of us on the fin to get it back up. Wing angle, back in the 18teen days it was 17° from the bottom of the centre-case to the tip of the wings. 49er is 15°. Wing clearance (at gunwhale above WL) 250mm 10-12” is what you need to avoid most of the waves, less will be annoying, more will be excessive. Wing tube size, your into B14 stuff now, 60 x 2mm works especially if you locally reinforce it as it goes over the gunwale, There is 64mm tube around and it works well for reinforcing. Wing width, this is very much a double edge sword, the very fastest 18teen where 17ft span, they where not 21ft or 33ft. Has to do with ergonomics, how quick you can move. Existing 49er is approx. 10ft wide. To go much beyond 11-12ft (without trapeze) would be counter productive in all likely hood. Yes they should be filled in, chickapea or dense net. Body swung, sure, but it’s exponential as you get wider, so wings need to be stronger so heavier and you end up chasing your tail. Going back to the first point, you will be down on speed, so you are likely to have to stack the nose down, so front wing tube in front of the shrouds is not a dumb idea. Rig,. As there are plenty of FX rigs about and 2nd hand ones are about to become more plentiful, why would you go anywhere else. jB
  6. JulianB

    Playing with my 49er - what to do

    OK, people, I am a devote minimalist, so my attitude to a I14 hull shape is to focus on the lowest drag up-wind variant that I can. Again, in case it has escaped people’s attention, you spend roughly ¾ ‘s of your sailing life going up-wind, so to focus a hull shape on anything but going up-wind is futile or stupid! You would then make minor mods to that hull to a) make it mangle-able downwind & b) make it fast downwind (and in that order). Point being, the being in the tide is very slow, so being able to hang onto a relatively large downwind sail area, is fundamental, a 2nd order factor will be to go ½ knot faster. Very probably you would not carry max mast height, but I have not even looked at the rules. From what I understand the spinnaker area is stupidly out of proportion to the boat/rig so very likely not max sail area, and again, up-wind performance is an absolute priority so the rig would be design around that, so unlikely to have the stupidly big jibs, have far more automatic rigs, not sure you should bother with adjustable rig tension, but adjustable Caps has merit and a lot simpler. But what would I know!~
  7. JulianB

    Playing with my 49er - what to do

    Pretty obviously that is not a 49er rig, and sit further fwd, get the nose it. But it's great to see it being used and enjoyed. jB
  8. JulianB

    Playing with my 49er - what to do

    I really enjoyed doing the SKUD. Hull is a interesting cross between a 29er and Vivace, the rig is basically a 29er, but we stiffened up the lower mast using D1's, but same sections, if you do that maths re RM, very similar to a 29er. I remember consulting with Dina (Chair of WS Equipment) re the attachment of the bulb (I don’t like the pins they use now, but what the hell) and the result was a great boat. Tim Ross (Adelaide boy, owns Xtreme sailboats Indonesia) and I descended on it in Singapore, tore it apart, threw ½ the shit away, and put it all back together in under 24hrs and won the selection about 6 hrs latter, then it was 4-6 months really manic work to take it from a concept that was bastardised by others into something that worked. Only reason we kept going is it had great bones! The result was truly spectacular for what was wanted, and I walked into a coffee shop about 6 years ago and was then mobbed by appreciative Para sailors. My eldest son was with me and was quite taken aback. That’s why you do this stuff. I do like the rolled over gunwales, that’s always a plus, they have lost the plot with the rig, but they are not the first to have done that, people just don’t get the finer nuances that make such a huge difference. Incredibly sad the class has gone where the class has gone. Quite interesting, and it happens time and time again, remove the “conceptor” the commercial element from the class management and at best the class becomes a Assoc managed class, which can be a very good thing, if it’s a huge class, otherwise that = volunteers running it, and if they have better things to do they quite rightly do it and the class suffers. David Staley who used to manage the SKUD is now the Sailing Sec at one of my Yacht Clubs, don’t even know what happened to Chris Mitchel, but of any class that could transcend the able/para transition, it was the SKUD. Don’t think I could do a better boat (in that size/cost range) So really don’t think I can help you there. jB
  9. JulianB

    Absolutely positively ILCA

    absoutly,
  10. JulianB

    Playing with my 49er - what to do

    So that's a big handsom pete, otherwise known as Zorro or Peter Sorensen who brought Vivarce of Piere Gal and he is sailing in Hamilton Island race week. He, in fact the Buck-toothed-wart (Andrew Buckland) who is sitting just infront of him made a number of changes to the boat inc a 350kg bulb, and 60mm thick and 2m deep fin and runners. Plus he is sailing 6 up, so probably 250kgs over target. And they also won most things. Plus Zorro won 3 18teen worlds, Buckland maybe 10, so they are no idiots. The present owner has taken that all off, and uses a tacking TE fin which is back to the original size and bulb weight (160kgs), original size rigs and I think he has sweep all before him over the last 2 years. Vivarce was built in 2002, I think, outer skin is 1 layer of 400gm carbon, 20mm core, so very little "idiot factor" but it's still in near perfcet shape. It, French Kiss and Conquistodor still demand $60-70k in the 2ndhand market. The S8 was spawned of it, tad hevier, canting keel, yad yad yad. I think DSS would have been more interesting. I sailed with Piere (the original owner/builder) on Lake MacQuarie in exactly this boat, probably in 2004-5 and we sat on 25knts for a 2nm ride (5 on-board). A wonderful boat, a real pleasure. One of my COVID project is to build a 99er (Vivarce is a 89er), probably 30ft starting in the next month or so, hope to again bring it in under 1000kgs inc crew. Keep you posted, jB
  11. Hi Torrid, yes, it's 50year old legacy fiberglass, but there are a multitude of nuances, that Turner has alluded to in his video, that we have heard from just about everyone one of the new builders and also the likes of Caldecott. Sure Caldecott no longer works for PSA, but probably the reason the PSA (& PSJ) boats were deemed better than LP was that Caldecott was on the floor probably ½ the time. When I was in their factory, which was quite often, he would always be looking over laminators shoulders, showing them how he wanted it consolidated, the mast jig always went in, it was always bonded for the right period of time and the boat stayed in the mould for the prescribe time at the prescribe temp. Caldecott was a avid Laser, Finn, A-Class and Capricorn sailor. His daughter is one of Australia’s best Radial sailors so he knew what each bit of glass did, and he knew the difference between a full consolidation and a partial consolidation of a bit of CSM. Turner is presently the Flying Fifteen World Champion, I think he is going for his 4 title this year, also sails OK dinghies, Lasers and has a PoW so he also knows where each piece of CSM should go and what it’s there for. Pom Green (Element 6) is a TP52 sailor, also ex I14. Santi Ziggy very accomplished, Alberto Portiglia (Nautivela) 470, 420 champion, George Zou, very accomplished of-course Devoit is a Bronze medallist (Finn). And Takao is just a legend, period! So you will be going from PSA/PSJ boats that where run by very accomplished sailors who were often on the floor with a motivated work force so no wonder their boats where better. Now you have 6 builders, all expecting to be making 300-400 boats per year, all of whom have great factory floors and have figure heads overseeing the process. You have to be willing to get your hands dirty! So the issue was to find that person, and that’s far from easy! Last time I saw the build manual was 1979, but even without knowing what's in it, and I know it a substaintially different doc now to the one I saw in 79, I can guess probably 3/4 of the tweaks. What order and which way, would take 20 boats, but these guys are all accomplised sailors and they will all get it. BTW, you can’t employ minimum wages people because you then get minimum wages boats. And that is especially true because its 50year old legacy fiberglass ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Another interesting tid-bit, I am of the understanding that there are more boats (ILCA’s) on order in Asia right now, than are ever likely to be sold into America. ZOU and Element 6 order books are very likely to be fully committed, so how many you may or may not get into the US is questionable. If you had a spare $2m and you had the choice of setting up in NA (probably Mexico) or Asia, I doubt there would be a milli-second of thought. 1/3rd of the world population is in Asia and they sail and they sail a lot, so again Usher and Roy and ILCA very probably have a vison past the present and into the future.
  12. JulianB

    Playing with my 49er - what to do

    In 2002 I did a sportsboat called Vivarce, 8.5m, 1000kgs inc the 5 crew, it was very quick, and spawned 20 odd boats, French Kiss, Conquesterdor etc etc, its still winning races 18 years on. It had 160kg blub. You about a 1/4 of that so 40kgs seens fair. Coming From the other side, Gerardo Seeliger, the then 29er/49er pres sailed his 29er one up with 10-15kgs blub and he reported that worked well, so that suggests a tad less than 40kgs would be sufficient. Like the fore-deck, I have a dwg something like that, about to go to Seahorse re where the 49er may end up in 5-10 years. jB
  13. What a load of crap! The sad reality is that in countries such as yours and mine there is no appetite for risk, WRT the manufacture of boats that are SMOD’s (even if in this case they are 5-6SMOD). I have first-hand experience, (and some reading this will know that first-hand) at the maths and the viability of setting up manufacture in Sth Carolina or Florida of ILCA’s and it simply did not stack up. It was not for lack of trying; it was more for lack of getting someone with specific skill-set to live in the US and commit 5 years to the project all the while you and others bleat about price. That person chose to live elsewhere. I am also aware of the “hell” that Turner (Ovington) and Portiglia (Nautivela) have gone through. I am also aware of what Element 6 and ZOU are enduring. It’s anything but easy and it’s anything but a gravy train! This problem is not unique to ILCA’s or 9ers, and you are in-fact lucky to have the Steve/Dave Clarks (& Melges) of this world who do it more for the love of it. (and yes I did field a phone call from Steve very early in the piece about exactly this!) WRT ILCA, they and by they, Tracy, Takao, Andy, & Clive plus countless others inc Eric, from where I am sitting and with what I know have acted with the absolute best interests of the ILCA members at heart and given that Tracy is doing this for the love of it, and Takao has taken huge hits to his life and his business to get it back on track, a) all of, but Tracy and Takao more-so are completely mad, but b) you owe then a huge debt of gratitude. WRT the 7 builders they have selected, interesting all (with the exception of Devoti) are in the “9er” club, so PSJ, Rio Tech, Zou, ZIM, Element 6, Ovington and Nautivela, all are exceptional boat-builders, all follow the rules, all do the right thing. I have been in every one of these boat-builders’ factories, (plus PSA, LP/Vanguard and PSUK (under Coventry/Graham) and I am very sure that ILCA where very careful with their selection and have got it right as they possibly could. As you have signalled out ZOU in Qingdao, I have been in that factory 3 times in the last 2 years. George Zou and Penny Ma are 2 of the most above-board boat builders I know, and George comes from a very long line a highly accomplished Chinese shipwright’s. It’s extraordinarily rare, to walk into another man’s factory, anywhere in the world, let alone China, and meet someone with the skill set and expertise of George. It was a breath of fresh air. It’s even rarer that when confronted with baseless (by definition) accusations that Penny (a highly accomplished businesswoman in her own right) & George, take the higher ground. What really takes me back is that if these baseless accusations had been rained on any number of other builders in many parts of the world the accuser would be miles deep in counterfeit crap right now. Penny and George have held the far higher ground Those accusers, including you, are very much the worse for your accusations. You (and they) look really stupid to those that actually know! I have very firsthand experience, ZOU has acted and are continuing to act, impeccably. Steve Perry (ZIM Connecticut) has a long and extremely fruit-full working relationship with them (along with a large number of other non-Chinese “builders”) plus a vast number of your C420's that your youth happily sail daily. So unless you have some tangible evidence to the contrary, I would suggest you pull your head in! As a Caucasian it’s embarrassing! jB
  14. JulianB

    Playing with my 49er - what to do

    If it was me, I would be using straight tubes, run the in-board end right into the Centercase, lots of material there, 10mm thick, say 4 x G10 or G12 screws through a 6mm alloy plate would hold it very well. Then jack to tube up on block as it passes the chainplate, you can bolt straiht through the gunwhale. External sleave as it passes across the top of the block. do the same thing at the back but fill the foot rail with epoxy and bolt straight through it It will allow you to get your weight fwd which you will need to do, plus it's stronger and simpler. You can then take the wing width out another 300mm say, bit of 60 x 2 round tube with some 64 x 1.8 as it comes over the gunwale would eat it. Let me know how you go, sounds like a bit of fun.
  15. JulianB

    Playing with my 49er - what to do

    The wings are more than capable of handling one-person body-swinging. They are design to take 2 people standing on the outer rail for short periods of time so if well maintained, they can carry one-person body swinging indefinitely. The idea of some polystyrene blocks at the end of the wing to lift your butt is a good one, not because the wings are too low but because it will be far more ergonomically comfortable, it will allow you to “droop” hick rather than straight leg hick. RM is very easy to determine, it's arm x weight, so you can compare different boats. SCP is somewhat more complex because you need to know the height of the CoE. Ditching the jib won’t work, because the c-board will be in the wrong place, plus it’s on a self-tacker, so why wouldn’t you, just let it do its thing. Probably need to drop the rig height to 6m and bring everything else down pro-rata. The other issue you will have is you will only need to float 180kgs and the boats design to float 275kgs so it will be overly buoyant, that just means the ends will not be in, and that’s OK but not ideal. Could actually be very nice, get the areas right and it will be bloody quick up-hill with all that RM, and not to sleazy down-hill, even without a spinnaker.