rigger 47 Posted May 6, 2013 Share Posted May 6, 2013 Seen onboard a ship in Tauranga. Link to post Share on other sites
w44vi 17 Posted May 6, 2013 Share Posted May 6, 2013 Hell, how much does it draw! Link to post Share on other sites
erice 732 Posted May 6, 2013 Share Posted May 6, 2013 a good pic for people who ask what the optimal length of the centreboard/keel/dagger is Link to post Share on other sites
El Toro 97 Posted May 6, 2013 Share Posted May 6, 2013 A VOR turned up in Auckland today to but not sure which one Link to post Share on other sites
Jon 360 Posted May 6, 2013 Share Posted May 6, 2013 Hell, how much does it draw! Competitor Details Name Ragamuffin Loyal Owner Syd Fischer State New South Wales Type Elliott 100 Designer Greg Elliott Builder Cookson Yachts Construction Composite LOA 30.48 Beam 5.7 Draft 6.2 Link to post Share on other sites
SloopJohnB 323 Posted May 6, 2013 Share Posted May 6, 2013 Of to the Transpac. Link to post Share on other sites
TimB 7 Posted May 6, 2013 Share Posted May 6, 2013 Is that the canter originally called Maximus? How the heck to do manage the forces generated by a 6m long arm with what, 10 tonne on it,inside a boat? Link to post Share on other sites
Jon 360 Posted May 6, 2013 Share Posted May 6, 2013 TimB Yes was called Maximus You need to ask Bill Buckley that question He's the engineer Link to post Share on other sites
Guest Posted May 7, 2013 Share Posted May 7, 2013 A VOR turned up in Auckland today to but not sure which one Mapfre (ex Telefonica and soon to be Black Jack) and is on the way to Brisbane Link to post Share on other sites
El Toro 97 Posted May 7, 2013 Share Posted May 7, 2013 Thats the one... Link to post Share on other sites
TimB 7 Posted May 7, 2013 Share Posted May 7, 2013 Booboo said 13tonne, wow swinging that on the end of a skinny (athwartships) 6m long beam with possibly only a 500mm long arm on the inside means loads of 169 tonnes for the hydraulic cylinder. 2 times for shock loads (engineering rule of thumb), no wonder there are lots of failures. Would be much cheaper and safer (and faster) to put a bouyant device out to leeward and leave the 13 tonnes on the dock ...... damm that would be a multihull Link to post Share on other sites
gurge 0 Posted May 7, 2013 Share Posted May 7, 2013 Don't they trust the ship crane Link to post Share on other sites
Island Time 1,230 Posted May 7, 2013 Share Posted May 7, 2013 Hey TimB, 2 x is not enough! Its not just the lever, its the shock loading as it twists while the boat is pounding to weather! A while ago I was talking to the Farr office about this - their designs now have 14x the integrity of the first swing keels! Link to post Share on other sites
TimB 7 Posted May 7, 2013 Share Posted May 7, 2013 Hi IT. 2 times is what I use to design a stop for a moving load. You (and Mr Farr) are correct it is a whole new ball game when combined torsion and bending together with the shock load falling off a wave plus the fatigue resulting from the vibrations developed by the twisting foil straightening up.... it is wonder they ever survive. Makes my head hurt trying to think about it. I'll take a non ballasted boat any day... TB Link to post Share on other sites
Island Time 1,230 Posted May 7, 2013 Share Posted May 7, 2013 Yup. Pleased it's not me trying to accurately gauge these loadings - must be a nightmare! Surprised more of them don't break... Link to post Share on other sites
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