Laser 161752 Tynemouth |
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Laser 28 - Excellent example of this great design Hamble le rice |
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Laser 140101 Tynemouth |
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List classes of boat for sale |
Gybing Plates |
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iGRF ![]() Really should get out more ![]() ![]() Joined: 07 Mar 11 Location: Hythe Online Status: Offline Posts: 6499 |
![]() ![]() ![]() ![]() Posted: 26 Jan 16 at 2:52pm |
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You need to translate all that into Apple speak, not sure if there's much in the CAD world that comes without considerable expense.
Edited by iGRF - 26 Jan 16 at 2:53pm |
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Phil_1193 ![]() Groupie ![]() Joined: 07 Jan 10 Online Status: Offline Posts: 78 |
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I maybe telling your granny etc but Autocad files can be 'printed' in PDF and saved/ sent as such Option 2 is download DWG True View from the AutoCad website, its a free CAD viewer that allows zoom and pan, turn off layers, take measurements etc to the same levels as AutoCad so makes details easier to read |
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JimC ![]() Really should get out more ![]() ![]() Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6662 |
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There are several classes that use gybing boards, but in many of them only some boats have them. According to my theorising the angle of the board should match the 'leeway' angle the boat would take up with a non-angled board, so a boat with a hideously inefficient board would do best with more angle than a boat with an optimal one. But there are so many opinions about the things...
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Roger ![]() Really should get out more ![]() ![]() Joined: 23 Mar 04 Location: Somerset Online Status: Offline Posts: 524 |
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Pretty much standard in all new 505s, and a lot of older boats converted to take them. There is loads of stuff written about it, but from memory 3 deg is what is currently in use, and a lot of 505 boards use stoppers to stop the board gybing when it is lifted, although there are some that put the boats fully down on all angles of sailing and leave it there. http://www.int505.org/old_site/gybecb.htm One point of caution is that a gybing board will load up the sides of the certerboard case more than a conventional board, and certainly in some older 505s which have converted to gybing boards they have felt it necessary to beef up the case. |
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iGRF ![]() Really should get out more ![]() ![]() Joined: 07 Mar 11 Location: Hythe Online Status: Offline Posts: 6499 |
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Regretably no access to autocad, but that's told me one thing I needed to know, the gybe angle, no more than 4 degrees, I think that's where I may have gone wrong before I seem to remember 7 degrees.
Fascinating document it advocates gybing plates without question and suggest jib angles can be altered, not that that's relevant in my case, but this little boat allegedly is not know for its' pointing capability, but that's hardly surprising if you could have seen this plate before I took a belt sander to it. it was just a parallel sided blunt both ended slab of wood, I'm even surprised they glass sheathed it. Thanks for posting that, so do we know if 5 ohs still use gybing plates? With all this assym nonesense of recent years they must have well gone out of fashion. Edited by iGRF - 26 Jan 16 at 12:32pm |
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davidyacht ![]() Really should get out more ![]() Joined: 29 Mar 05 Online Status: Offline Posts: 1345 |
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Do you have access to Autocad? I have some drawings that I did for my N12 with the gybing head sections and profiles in a DWG or DXF format.
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Happily living in the past
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davidyacht ![]() Really should get out more ![]() Joined: 29 Mar 05 Online Status: Offline Posts: 1345 |
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Have a look at
http://www.int505.org/old_site/eck1.pdf
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Happily living in the past
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iGRF ![]() Really should get out more ![]() ![]() Joined: 07 Mar 11 Location: Hythe Online Status: Offline Posts: 6499 |
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I don't suppose anyone might have a picture of one, I'm trying to fashion the head of the plate in this Minisprint I bought recently and doing it from memory, ahem thirty five year old memory at that, last time I had one was in 1981 and it wasn't particularly successful in a div 2 board, I'm hoping the additional weight and leverage of this Minisprint with it's canoe seat might be able to overcome the excess lift they generate.
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