strider470 2,128 Posted February 23 Share Posted February 23 As a neutral spectator, I hope for extremely light winds and a huge speed and VMG advantage for Luna Rossa 4 Quote Link to post Share on other sites
winchfodder 328 Posted February 23 Author Share Posted February 23 53 minutes ago, strider470 said: Another question is how much fast is Te Rehutai in tacking and gybing? Maneuvering speed seems something Luna Rossa is quite strong at. Everything we can believe from past performance of the team and what we have seen in videos is that TR is going to be quicker than LR. Though she looks bulkier forward so possibly less aerodynamic and there have been suggestions (and the odd video) where she dumps her stern in a tack. This should be possible to solve, if so, by adjusting the rudder angle I would have thought unless it was a more fundamental problem. If that is the case just slip Herbie II aboard. Quote Link to post Share on other sites
kiwin 141 Posted February 23 Share Posted February 23 5 minutes ago, winchfodder said: Though she looks bulkier forward so possibly less aerodynamic Te Rehutai has a lower frontal area than the other boats, so possibly lower drag. Quote Link to post Share on other sites
Dolphin65 56 Posted February 23 Share Posted February 23 10 minutes ago, winchfodder said: Everything we can believe from past performance of the team and what we have seen in videos is that TR is going to be quicker than LR. What order of magnitude can we expect? If it's a few knots (and worst VMG) we can hope for closer matches. I would say that anything else, will mean a sweep for the Kiwis and boring races Quote Link to post Share on other sites
kiwin 141 Posted February 23 Share Posted February 23 Found it : Quote Link to post Share on other sites
strider470 2,128 Posted February 23 Share Posted February 23 30 minutes ago, winchfodder said: Everything we can believe from past performance of the team and what we have seen in videos is that TR is going to be quicker than LR. Though she looks bulkier forward so possibly less aerodynamic and there have been suggestions (and the odd video) where she dumps her stern in a tack. This should be possible to solve, if so, by adjusting the rudder angle I would have thought unless it was a more fundamental problem. If that is the case just slip Herbie II aboard. Spithill - Hello Mr. Bertelli, I would be greatly interested in helming Luna Rossa for the next America's Cup Bertelli - Fuck James, crew complete, I'm sorry, and you can't even speak Italian. Spithill - Ehm, I kept Herbie in my garage, and it's not a car, I thought you could be interested. Bertelli - Well then, you are hired. But you can forget to be more than half helmsman (and at half the salary), I already promised that to Checco Bruni, and the Sicilian mafia wouldn't accept such a sgarro! We must find a way to justify that for the public, maybe we will say it's a strategic decision. I'll talk to Max. If we are lucky the Kiwis will take the bait and will even try to do the same, out of fear. 3 Quote Link to post Share on other sites
Dolphin65 56 Posted February 23 Share Posted February 23 13 minutes ago, kiwin said: Found it : Huge difference between TR and the rest.... I would definitely say less drag for TR. Quote Link to post Share on other sites
winchfodder 328 Posted February 23 Author Share Posted February 23 17 minutes ago, kiwin said: Found it : 2 minutes ago, Dolphin65 said: Huge difference between TR and the rest.... I would definitely say less drag for TR. Good find. Front on it does look like less drag. 1 Quote Link to post Share on other sites
Physalia 29 Posted February 23 Share Posted February 23 5 hours ago, winchfodder said: As a DoG fanboy I am a bit concerned about the fracker in chief (FIC) and his new found love of the Cup. Since his team were soundly demolished on the race course he has been quoted in the UK Daily Telegraph (see below) and, like others before him, believes that he has the silver bullet that will "fix" the AC. His main concern is that "it needs to be a level playing field." This is an interesting proposition. The history of the AC points to the fact that winning in most cases (the kiwis being the black sheep) requires the complete opposite of a level playing field when it comes to cash. Koch, Bertarelli, Ellison proved that. Applying their vision, and trying to make it stick, after winning is the interesting one. Koch seemed happy to walk away. Bertarelli did have a big "vision" but came up against the old cash problem with a man who simply had more and Ellison is still funding his. So the FIC has quite an interesting time ahead. At least it looks like his new found passion will keep us entertained and will plough plenty of his black gold into the sport and business of sailing. "Will Sir Jim Ratcliffe keep funding the team? This is the £100million question. Ratcliffe and other senior Ineos executives, including fellow Ineos owner Andy Currie, are also believed to be staying out in New Zealand for a while. But he has also said that he wants to see certain changes if he is to recommit. Among Ratcliffe's demands: more stability - sticking with these foiling monohulls - more teams, lower entry costs, fewer legal spats, more action between Cups similar to the World Series tours held in the last cycle. In short, a more professional sport and a more sustainable commercial structure. Ratcliffe has even suggested a governing body. “The America’s Cup should be the pinnacle of sailing and I think this new class of boat is the perfect model for the future,” he said recently. “This formula is really exciting so I think if the America’s Cup sticks with this, it’s got a very exciting future. It needs to be, in my view, a level playing field. It isn’t at the moment. There’s too much advantage to the defender and the challenger of record.” Dream on! I watched the NASA Perseverance landing broadcast from their mission control last week - quite the show! The spooky thing about it was the 7-8 minute delay in the telemetered data from the lander (speed of light and all that), so effectively the the room was watching events unfold in the past. When the lander data was showing the start of the decent sequence on screens, the lander was already either safely on the surface or the freshest crater in Martian soil... I too am dreaming of a closely fought series, but dread repeat of the Perseverance scenario. Will we witness the inevitable cratering of one team (in terms of relative performance), the result of design decisions made three years ago but only now made manifest? Has this race already happened, and we just don't know it yet? Well, at least the first leg of the first race will be exciting - I hope my forebodings are totally off. I'll be watching with an Italian wife, while wearing an ETNZ shirt that I bought in the company store on the Viaduct in February 2020... 3 Quote Link to post Share on other sites
marlowe 217 Posted February 23 Share Posted February 23 3 hours ago, Rennmaus said: Good that we have the DoG, the NYSC and the NYAG, all of them guardians of the AC. You forgot to mention SAAC. 1 Quote Link to post Share on other sites
marlowe 217 Posted February 23 Share Posted February 23 5 hours ago, winchfodder said: As a DoG fanboy I am a bit concerned about the fracker in chief (FIC) and his new found love of the Cup. Since his team were soundly demolished on the race course he has been quoted in the UK Daily Telegraph (see below) and, like others before him, believes that he has the silver bullet that will "fix" the AC. .......... Ratcliffe is just the most recent johnny-come-lately in a line of billionaires who thought they could buy fix the AC. Like those before, his ideas are corporate and commercial. 1 Quote Link to post Share on other sites
mauriciogfj 122 Posted February 23 Share Posted February 23 31 minutes ago, Physalia said: I watched the NASA Perseverance landing broadcast from their mission control last week - quite the show! The spooky thing about it was the 7-8 minute delay in the telemetered data from the lander (speed of light and all that), so effectively the the room was watching events unfold in the past. When the lander data was showing the start of the decent sequence on screens, the lander was already either safely on the surface or the freshest crater in Martian soil... I know the feeling. I remember "watching" the Louis Vuiton and America´s Cup Finals, here in Brazil, "live" in Virtual Spectator over a dial-up internet connection. Quote Link to post Share on other sites
mauriciogfj 122 Posted February 23 Share Posted February 23 20 years ago Quote Link to post Share on other sites
kiwin 141 Posted February 23 Share Posted February 23 The Americas Cup has outlasted better and worse people than Ratcliffe. It will outlast him just fine. The DOG document is much sturdier than it first appears 2 Quote Link to post Share on other sites
winchfodder 328 Posted February 23 Author Share Posted February 23 21 minutes ago, marlowe said: Ratcliffe is just the most recent johnny-come-lately in a line of billionaires who thought they could buy fix the AC. Like those before, his ideas are corporate and commercial. Here's hoping that the FIC is fully hooked. We need new skin in the game to keep the party going. And after seeing the images and interviews with a half-cut Sir Ben lurching around the viaduct in jeans and accosting all and sundry I am looking forward to his next meltdown. Even better is Sir Ben on the water. His match racing aggression and skill is impressive. So I hope he will be taking the wheel again. "What are you doing Man?" Indeed! Quote Link to post Share on other sites
Dolphin65 56 Posted February 23 Share Posted February 23 2 hours ago, Dolphin65 said: What order of magnitude can we expect? If it's a few knots (and worst VMG) we can hope for closer matches. I would say that anything else, will mean a sweep for the Kiwis and boring races Maybe @Mozzy Sails might throw a few cents on this? Quote Link to post Share on other sites
winchfodder 328 Posted February 23 Author Share Posted February 23 28 minutes ago, Dolphin65 said: Maybe @Mozzy Sails might throw a few cents on this? Yes please Mozzy. Some of your informed commentary based on the data assesing the two boats would be brilliant before the 6th Match. Quote Link to post Share on other sites
Flippin Out 130 Posted February 24 Share Posted February 24 21 hours ago, jaysper said: Fuck that's sweet odds for INEOS. Gotta get me some of that action. Sure, they're unlikely to win but the odds are fantastic! Probably a touch short for me to be honest, but best of luck though, hope it all works out for you. 1 Quote Link to post Share on other sites
winchfodder 328 Posted February 24 Author Share Posted February 24 15 hours ago, kiwin said: Found it : 15 hours ago, Dolphin65 said: Huge difference between TR and the rest.... I would definitely say less drag for TR. Pics below look like TR is "bulkier" side on than LR. Though might be just the paint jobs. Quote Link to post Share on other sites
tractorbeam 6 Posted February 24 Share Posted February 24 I would guess that because the middle of TR is thin they had to make slab sides to gain the necessary longitudinal strength and stiffness. Centreline, aft TR is super thin hence all the above deck hydraulic clew malarky. I think LR has enough space for a below deck boom arrangement. Was it Dennis Conner who said that the Cup is already won, we just don't know who it is yet? Quote Link to post Share on other sites
Teaky 144 Posted February 24 Share Posted February 24 Did ETNZ help Prada to become competative against UK? If so, why? Quote Link to post Share on other sites
strider470 2,128 Posted February 24 Share Posted February 24 2 minutes ago, Teaky said: Did ETNZ help Prada to become competative against UK? If so, why? ? Not heard anything about that, it's more likely the contrary 2 Quote Link to post Share on other sites
45Roller 362 Posted February 24 Share Posted February 24 18 hours ago, kiwin said: Found it : Thanks for this, @MaxHugen your thoughts? Quote Link to post Share on other sites
Nutta 454 Posted February 24 Share Posted February 24 (edited) 19 hours ago, winchfodder said: Everything we can believe from past performance of the team and what we have seen in videos is that TR is going to be quicker than LR. Though she looks bulkier forward so possibly less aerodynamic and there have been suggestions (and the odd video) where she dumps her stern in a tack. This should be possible to solve, if so, by adjusting the rudder angle I would have thought unless it was a more fundamental problem. If that is the case just slip Herbie II aboard. That's Te HerbieRua to you. Edited February 24 by Nutta Fucking autocorrect Quote Link to post Share on other sites
chuso007 641 Posted February 24 Share Posted February 24 1 hour ago, Teaky said: Did ETNZ help Prada to become competative against UK? If so, why? I think it was actually the other way around. Quote Link to post Share on other sites
MaxHugen 1,022 Posted February 24 Share Posted February 24 34 minutes ago, 45Roller said: Thanks for this, @MaxHugen your thoughts? Not sure what you're asking about... but if it's the side profile, I'd guess that NZ has only very slightly more area than LR. Subtle differences make it hard to really compare. NZ bow could be slightly deeper, the crew pod does add a little bit of height from amidships, more so well aft - but not as much as you might think when comparing the pods to MRP... (estimate only of course) Quote Link to post Share on other sites
winchfodder 328 Posted February 24 Author Share Posted February 24 1 hour ago, Teaky said: Did ETNZ help Prada to become competative against UK? If so, why? 1 hour ago, strider470 said: ? Not heard anything about that, it's more likely the contrary 9 minutes ago, chuso007 said: I think it was actually the other way around. Yes, if at all. If we are to believe the love-in between the FIC and ETNZ. Though I think it is highly unlikely that INEOS has much to offer. All the data from the Prada Cup is out there and there is enough video off and onboard to understand any special foil or mainsail trimming, ride height, crewing techniques, tacking and gybing moves to study without approaching either team. 1 Quote Link to post Share on other sites
winchfodder 328 Posted February 24 Author Share Posted February 24 4 minutes ago, MaxHugen said: Not sure what you're asking about... but if it's the side profile, I'd guess that NZ has only very slightly more area than LR. Subtle differences make it hard to really compare. NZ bow could be slightly deeper, the crew pod does add a little bit of height from amidships, more so well aft - but not as much as you might think when comparing the pods to MRP... (estimate only of course) I was just comparing the side on photos with the Chevalier end on profiles which seem to show TR has less drag (less hull volume all round). 1 Quote Link to post Share on other sites
minimumfuss 320 Posted February 24 Share Posted February 24 20 hours ago, Dolphin65 said: More than anything else, I pray for a close match. Nothing gives you high levels of adrenaline than America's Cup duels and/or Moto GP........... Shaving the back end of a competitor or pushing them wide, does make great TV 1 Quote Link to post Share on other sites
MaxHugen 1,022 Posted February 24 Share Posted February 24 9 minutes ago, winchfodder said: I was just comparing the side on photos with the Chevalier end on profiles which seem to show TR has less drag (less hull volume all round). No disregard to Chevalier - his drawings are awesome IMO - but they aren't 100% accurate, as you would expect. Note TR's end on profile... missing a lower section of hull bustle: Quote Link to post Share on other sites
winchfodder 328 Posted February 24 Author Share Posted February 24 4 minutes ago, MaxHugen said: No disregard to Chevalier - his drawings are awesome IMO - but they aren't 100% accurate, as you would expect. Note TR's end on profile... missing a lower section of hull: Perfect. I thought so. And yes the work he has put into the Cup over the years is totally outstanding. 1 Quote Link to post Share on other sites
winchfodder 328 Posted February 24 Author Share Posted February 24 4 minutes ago, MaxHugen said: No disregard to Chevalier - his drawings are awesome IMO - but they aren't 100% accurate, as you would expect. Note TR's end on profile... missing a lower section of hull: 1 minute ago, winchfodder said: Perfect. I thought so. And yes the work he has put into the Cup over the years is totally outstanding. So in general which of the two do you think has the least drag (in flight). Quote Link to post Share on other sites
kiwin 141 Posted February 24 Share Posted February 24 I think after San Francisco a major ETNZ priority has been low drag. I expect TR to be faster. Quote Link to post Share on other sites
MaxHugen 1,022 Posted February 24 Share Posted February 24 1 minute ago, winchfodder said: So in general which of the two do you think has the least drag (in flight). I did a very rough general estimate of form drag from their side on plan... it's not much really, because of the angle to the apparent wind they sail at. Unfortunately I was unable to estimate induced drag, which I would guess to be much higher. Didn't like GB's hull as I think their skeg would produce significant vortices. But I (we) may never really know, unless someone with great ability reproduces CFD calcs. Apart from hull drag though, it's also important how the hull performs whilst trying to get onto the foils, where I do like NZ's "canoe" shaped bustle. Plus how the hull's aerodynamics work to enhance sail performance. NZ's lowered deck gives them several more square metres of sail low down where it's most useful, and the pods almost seem like "end plates" to the deck, which in turn "end plates" the mainsail! Nevertheless, LR does look like it has a very slippery profile, so I'll take a wild stab, and guess that LR has least hull drag, but NZ is better at adding horsepower to their mainsail. 1 Quote Link to post Share on other sites
kiwin 141 Posted February 24 Share Posted February 24 What kind of apparent wind angles are the boats experiencing. up/down? Quote Link to post Share on other sites
mako23 613 Posted February 24 Share Posted February 24 6 minutes ago, MaxHugen said: Nevertheless, LR does look like it has a very slippery profile, so I'll take a wild stab, and guess that LR has least hull drag, but NZ is better at adding horsepower to their mainsail. I think the whole ethos of ETNZ was getting their mast lower than any of the other boats 1 Quote Link to post Share on other sites
MaxHugen 1,022 Posted February 24 Share Posted February 24 5 minutes ago, kiwin said: What kind of apparent wind angles are the boats experiencing. up/down? Best is around 11° possibly, upwind. Downwind a couple of degrees less, as they use leeway for better VMG. Just my guess though. Quote Link to post Share on other sites
MaxHugen 1,022 Posted February 24 Share Posted February 24 7 minutes ago, mako23 said: I think the whole ethos of ETNZ was getting their mast lower than any of the other boats Of course the mast base is fixed at MRP by the rules... but assume you're referring to mainsail area, below the measurement points. Quote Link to post Share on other sites
kiwin 141 Posted February 24 Share Posted February 24 4 minutes ago, MaxHugen said: Best is around 11° possibly, upwind. Downwind a couple of degrees less, as they use leeway for better VMG. Just my guess though. So with that kind of apparent angle I would guess that frontal area is by far the most important, and side profile largely irrelevant? Quote Link to post Share on other sites
MaxHugen 1,022 Posted February 24 Share Posted February 24 3 minutes ago, kiwin said: So with that kind of apparent angle I would guess that frontal area is by far the most important, and side profile largely irrelevant? Frontal area drag is greater, maybe 3-4 times as much as side area, but no drag is irrelevant to the teams! Here's an approximation of total drag - note that hull drag should be higher as this doesn't include hull induced drag: 2 Quote Link to post Share on other sites
strider470 2,128 Posted February 24 Share Posted February 24 2 minutes ago, MaxHugen said: Frontal area drag is greater, maybe 3-4 times as much as side area, but no drag is irrelevant to the teams! Here's an approximation of total drag - note that hull drag should be higher as this doesn't include hull induced drag: Some foil drag is inherently bond to the generated (wanted) lifting force, it would be interesting having separate values for efficient and dissipated drag. Quote Link to post Share on other sites
MaxHugen 1,022 Posted February 24 Share Posted February 24 8 minutes ago, strider470 said: Some foil drag is inherently bond to the generated (wanted) lifting force, it would be interesting having separate values for efficient and dissipated drag. Assuming that you are referring to form (or parasitic) drag, vs induced drag (from lift), my calcs at ~40 knots boat speed suggest 29% form drag, vs 71% induced drag. But note that as speed increases, the percentage of induced drag decreases compared to form drag. 2 Quote Link to post Share on other sites
winchfodder 328 Posted February 24 Author Share Posted February 24 55 minutes ago, kiwin said: What kind of apparent wind angles are the boats experiencing. up/down? From the data the TWA upwind is LR 48.28 and INEOS 50.53 in Race 5 of the final. LR 139.61 downwind and INEOS 138.75 Quote Link to post Share on other sites
kiwin 141 Posted February 24 Share Posted February 24 But for drag it's the apparent that is important. And my point is that the boats are always at a yaw angle of say 12 degrees or less to the apparent wind. Further that apparent wind angles may be even less AT THE BOAT due to the effect of the sails. Quote Link to post Share on other sites
MaxHugen 1,022 Posted February 24 Share Posted February 24 13 minutes ago, winchfodder said: From the data the TWA upwind is LR 48.28 and INEOS 50.53 in Race 5 of the final. LR 139.61 downwind and INEOS 138.75 I have some reservations about the accuracy of this data... remembering it comes from the boats, where accurate measurements of TWA etc are questionable. Consider: LR doing 29.68 knots upwind in 11.87 TWS = 2.5 times TWS. Hmmmm LR sailing at AWA = 13.5°. Maybe, seems a bit low, expected closer to 11-12°, but ... Quote Link to post Share on other sites
mako23 613 Posted February 24 Share Posted February 24 1 hour ago, MaxHugen said: Of course the mast base is fixed at MRP by the rules... but assume you're referring to mainsail area, below the measurement points. Yes Quote Link to post Share on other sites
Essex 67 Posted February 24 Share Posted February 24 On 2/23/2021 at 9:23 AM, AeroSail1 said: Not if LR engages in an endless tacking duel and keeps a tight cover on TR, i frankly don't believe the speed edge is this huge especially in light winds. Let's hope for a full march of 7 kts breeze and we are in for a treat How much of a tacking duel is even possible in these boats given the finite amount of energy coming from your grinders? I read earlier one of the reasons for short races is the physical effort involved. Do they have capacity to go tack after tack for long? (Not that the grinders won't give their all). Quote Link to post Share on other sites
Essex 67 Posted February 24 Share Posted February 24 On 2/23/2021 at 9:23 AM, AeroSail1 said: Not if LR engages in an endless tacking duel and keeps a tight cover on TR, i frankly don't believe the speed edge is this huge especially in light winds. Let's hope for a full march of 7 kts breeze and we are in for a treat How much of a tacking duel is even possible in these boats given the finite amount of energy coming from your grinders? I read earlier one of the reasons for short races is the physical effort involved. Do they have capacity to go tack after tack for long? (Not that the grinders won't give their all). Quote Link to post Share on other sites
Barnyb 630 Posted February 24 Share Posted February 24 From Nov 2020: Quote Link to post Share on other sites
jaysper 1,256 Posted February 24 Share Posted February 24 10 hours ago, strider470 said: ? Not heard anything about that, it's more likely the contrary It's more likely they left the challengers to their own shit. Who in ETNZ would really give a fuck which challenger they face? Besides for all the bitching between LR and ETNZ, I would suspect ETNZ still have an incredibly strong affinity for LR like most NZ AC fans do. They've been around a long time and have for the most part acted like good cunts. 3 Quote Link to post Share on other sites
MaxHugen 1,022 Posted February 24 Share Posted February 24 11 minutes ago, Barnyb said: From Nov 2020: Heavy Metal, AC36 version? Quote Link to post Share on other sites
Paddywackery 435 Posted February 24 Share Posted February 24 6 minutes ago, jaysper said: It's more likely they left the challengers to their own shit. Who in ETNZ would really give a fuck which challenger they face? Besides for all the bitching between LR and ETNZ, I would suspect ETNZ still have an incredibly strong affinity for LR like most NZ AC fans do. They've been around a long time and have for the most part acted like good cunts. Yeah....it could all be handbags Quote Link to post Share on other sites
bajakiter 22 Posted February 24 Share Posted February 24 Surprised that no one seems to know for sure the speed differential between ENTZ and LR. One would think with todays technology, it would be fairly easy to at least approximate. So is it 5kts? 10 Kts? If there is a huge speed differential, is ENTZ going to slow down to make it more of a TV spectacle? A bit over one week to go. Thought we would know more. Hoping it will be close and that LR takes the cup just for a change of scenery. Quote Link to post Share on other sites
southseasbill 154 Posted February 24 Share Posted February 24 Long range forecast showing a Northerly flow sourced from a weak tropical low to the North West on Saturday 6th. Don't think we have had that with the racing so far. Will be interesting to see how it develops. Won't be a drift fest by the look of things. Quote Link to post Share on other sites
sfigone 363 Posted February 24 Share Posted February 24 On 2/23/2021 at 4:42 PM, Dolphin65 said: Huge difference between TR and the rest.... I would definitely say less drag for TR. It's interesting that LR has a higher deck because they have put more main hydraulics (and maybe a boom) underneath. TR has put much of that complexity between the main sails, which made me initially think "weight aloft"!!! But on boats that do not heel, then there is much less righting moment issues with having weight higher up. Quote Link to post Share on other sites
strider470 2,128 Posted February 24 Share Posted February 24 1 minute ago, sfigone said: It's interesting that LR has a higher deck because they have put more main hydraulics (and maybe a boom) underneath. TR has put much of that complexity between the main sails, which made me initially think "weight aloft"!!! But on boats that do not heel, then there is much less righting moment issues with having weight higher up. LR not having a mechanism between the mains should result in a better shape in that section, on the other hand, they have less sail area compared to the main of TR (good loophole) Quote Link to post Share on other sites
southseasbill 154 Posted February 24 Share Posted February 24 4 minutes ago, sfigone said: It's interesting that LR has a higher deck because they have put more main hydraulics (and maybe a boom) underneath. TR has put much of that complexity between the main sails, which made me initially think "weight aloft"!!! But on boats that do not heel, then there is much less righting moment issues with having weight higher up. I saw a picture of LR showing that the deck is just a removable aero cover with a boom underneath. Quote Link to post Share on other sites
strider470 2,128 Posted February 24 Share Posted February 24 3 minutes ago, southseasbill said: I saw a picture of LR showing that the deck is just a removable aero cover with a boom underneath. This Quote Link to post Share on other sites
winchfodder 328 Posted February 24 Author Share Posted February 24 30 minutes ago, sfigone said: It's interesting that LR has a higher deck because they have put more main hydraulics (and maybe a boom) underneath. TR has put much of that complexity between the main sails, which made me initially think "weight aloft"!!! But on boats that do not heel, then there is much less righting moment issues with having weight higher up. 24 minutes ago, southseasbill said: I saw a picture of LR showing that the deck is just a removable aero cover with a boom underneath. Yes. There is definitely a boom on LR which is covered by a thin non structural carbon cover, hence the red outlined shapes shown by the aft camera as "no-step" zones. This means that the false deck is higher, more weight higher up and less area below the mast step to give free area in the mainsail "skirt". Plus more windage than TR The boom itself contains the mainsail clew hydraulics and probably the rams to control the two mainsail skins in.the lower section. It appears to pivot at the foot of the mast ball (for rotation) and the outer end has a traveller attached to a curved track on the deck. This means that all three challengers were using booms and only TR is not. Quote Link to post Share on other sites
southseasbill 154 Posted February 24 Share Posted February 24 3 minutes ago, winchfodder said: Yes. There is definitely a boom on LR which is covered by a thin non structural carbon cover, hence the red outlined shapes shown by the aft camera as "no-step" zones. This means that the false deck is higher, more weight higher up and less area below the mast step to give free area in the "skirt". The boom itself contains the mainsail tack hydraulics and probably the rams to control the two mainsail skins in.the lower section. It appears to pivot at the foot of the mast ball (rotation) and the outer end is traveller attached to a curved track on the deck. This means that all three challengers were using booms and only TR is not. That's probably why they don't want Jimmy crossing sides. Be a shame if he fell through the deck. Quote Link to post Share on other sites
strider470 2,128 Posted February 24 Share Posted February 24 5 minutes ago, southseasbill said: That's probably why they don't want Jimmy crossing sides. Be a shame if he fell through the deck. He was not going to walk through the mainsail like a ghost, anyway Quote Link to post Share on other sites
southseasbill 154 Posted February 24 Share Posted February 24 Enough room for a tunnel? Quote Link to post Share on other sites
sfigone 363 Posted February 24 Share Posted February 24 9 minutes ago, winchfodder said: This means that all three challengers were using booms and only TR is not. I don't think LR's "boom" can really be considered a boom. Specifically it does not move vertically at all and it is not trimmed by the main sheet. Instead it moves the main sheeting point, just as a traveller does. It's probably better to consider it as a solid linkage from traveller to mast that is used to a) rotate the mast; b) transfer some compressive loads from the traveller to the mast; c) carry the hydraulics for the main sheet. If they put a fairing around it, they could probably get rid of the deck... but that would really only be worthwhile if they could also lower the foredeck. 1 Quote Link to post Share on other sites
mako23 613 Posted February 24 Share Posted February 24 15 minutes ago, southseasbill said: That's probably why they don't want Jimmy crossing sides. Be a shame if he fell through the deck. One thing is for sure it’s a far more elegant solution than the other two challengers. 2 Quote Link to post Share on other sites
Sailbydate 2,874 Posted February 24 Share Posted February 24 16 hours ago, winchfodder said: Pics below look like TR is "bulkier" side on than LR. Though might be just the paint jobs. Maybe. But how would "bulkier side on" be relevant at 50+ knots AWS? Reminds me a bit of, Usain St Leo Bolt - all 6' 5" and 200 + lbs of him. ;-) 1 Quote Link to post Share on other sites
Regular Swimmer 31 Posted February 24 Share Posted February 24 16 hours ago, winchfodder said: Pics below look like TR is "bulkier" side on than LR. Though might be just the paint jobs. I imagine that "bulkiness" is more important to sail power/end-plating than it is to drag profile. It also makes a handy canoe for getting some speed in displacement mode. Quote Link to post Share on other sites
Sailbydate 2,874 Posted February 25 Share Posted February 25 4 hours ago, mako23 said: One thing is for sure it’s a far more elegant solution than the other two challengers. Forget stylish and sophisticated, just give me functional. ;-) 1 Quote Link to post Share on other sites
mako23 613 Posted February 25 Share Posted February 25 24 hours and no major fight in this thread. What the heck is going on here ?? I wonder how long it will last Quote Link to post Share on other sites
jaysper 1,256 Posted February 25 Share Posted February 25 33 minutes ago, mako23 said: 24 hours and no major fight in this thread. What the heck is going on here ?? I wonder how long it will last No longer you bastard! Quote Link to post Share on other sites
strider470 2,128 Posted February 25 Share Posted February 25 I have a question for the experts. In the different crew roles, I can't find the guy continuously throwing coloured circles out of the stern of the boats during the races. And most of all, how many fucking circles do they carry aboard? Are they collected at the end of the race? 6 Quote Link to post Share on other sites
AeroSail1 26 Posted February 25 Share Posted February 25 2 minutes ago, strider470 said: I have a question for the experts. In the different crew roles, I can't find the man continuously throwing coloured circles out of the stern of the boats during the races. And most of all, how many fucking circles do they carry aboard? Are they collected at the end of the race? Heard from reputable sources that for the AC Final LR will throw banana peels in the pre start to make ETNZ fall from the foils 1 Quote Link to post Share on other sites
The Advocate 278 Posted February 25 Share Posted February 25 4 minutes ago, strider470 said: I have a question for the experts. In the different crew roles, I can't find the man continuously throwing coloured circles out of the stern of the boats during the races. And most of all, how many fucking circles do they carry aboard? Are they collected at the end of the race? https://images.app.goo.gl/YUhQACkc8YLhryAH8 Quote Link to post Share on other sites
Forourselves 1,336 Posted February 25 Share Posted February 25 Quote Link to post Share on other sites
mako23 613 Posted February 25 Share Posted February 25 39 minutes ago, strider470 said: I have a question for the experts. In the different crew roles, I can't find the guy continuously throwing coloured circles out of the stern of the boats during the races. And most of all, how many fucking circles do they carry aboard? Are they collected at the end of the race? It’s an Italian in the boat called Dickus Maximus every once in a while he likes to wash his cock by dipping into the water. The only problem he’s filthy and hardly every washes hence the yellow rings Quote Link to post Share on other sites
strider470 2,128 Posted February 25 Share Posted February 25 20 minutes ago, mako23 said: It’s an Italian in the boat called Dickus Maximus every once in a while he likes to wash his cock by dipping into the water. The only problem he’s filthy and hardly every washes hence the yellow rings Maximus indeed. I see you couldn't help but notice the size of the circles! So you are telling me that the guy on the other boat just had a sexual intercourse with Papa Smurf?? Quote Link to post Share on other sites
mako23 613 Posted February 25 Share Posted February 25 27 minutes ago, strider470 said: Maximus indeed. I see you couldn't help but notice the size of the circles! So you are telling me that the guy on the other boat just had a sexual intercourse with Papa Smurf?? Yes correct .... it’s Papa smurf the infamous gay porn star from the 90’s typing those words into google lead to something horrific, some things can’t be unseen 1 Quote Link to post Share on other sites
jaysper 1,256 Posted February 25 Share Posted February 25 49 minutes ago, mako23 said: Yes correct .... it’s Papa smurf the infamous gay porn star from the 90’s typing those words into google lead to something horrific, some things can’t be unseen If you want horrific, Google "two girls, one cup". I'll be stunned if you can watch the whole thing. Quote Link to post Share on other sites
The Advocate 278 Posted February 25 Share Posted February 25 This place has really changed. Quote Link to post Share on other sites
IPLore 896 Posted February 25 Share Posted February 25 The consensus expectation in the Anglo speaking world is so firmly of the belief that ETNZ is the most likely winner.......but: 1. We really do not know because LR improved significantly since ACWS. 2. We assume ETNZ has improved at least as much.....but we wont know until race #1. Race 1 will give us our first real insight. Just like consensus, I believe that ETNZ's boat speed at ACWS is baked in and will have improved at least as much as LR ...so Im consensus but ready to acknowledge there could be a surprise 1 Quote Link to post Share on other sites
Thewas 159 Posted February 25 Share Posted February 25 OK, still a week to waste before the actual racing. Maybe time for some recap of the (winning) campaigns? I started to link some points (yes, I'm bored!) and kinda of a big picture built up in my mind. My two cents: 1) (very unlikely) ETNZ got B1 wrong and changed quite radically their path with B2. That can be good for LR's odds. 2) (more likely) ETNZ had already pretty clear how an AC75 should be, and that's TR. They build TA to "tick all the boxes" they weren't sure about. And to disguise everything else. So they put on TR the few things that actually showed to be working on TA together with all the things they already kne
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