Laser 28 - Excellent example of this great design Hamble le rice |
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Rossiter Pintail Mortagne sur Gironde, near Bordeaux |
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Laser 140101 Tynemouth |
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List classes of boat for sale |
Howling Boats |
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mike ellis ![]() Really should get out more ![]() ![]() Joined: 30 Dec 05 Location: United Kingdom Online Status: Offline Posts: 2339 |
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the boat may not have to go fast enough for the whistle , the wind might do it for you. my feva hums downwind and on a flat day you get a fountain off the rudder, dont know if it happens on wavy days though Edited by mike ellis |
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600 732, will call it Sticks and Stones when i get round to it.
Also International 14, 1318 |
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Matt Jackson ![]() Really should get out more ![]() ![]() Joined: 21 Sep 04 Location: Darlington Online Status: Offline Posts: 962 |
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Used to have a motorbike that whisled at 40mph+ and really annoyed me. When I investigated I found that somone had taped one of those really loud safety whistles from their lifejacket to the forks
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Laser 203001, Harrier (H+) 36
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BBSCFaithfull ![]() Really should get out more ![]() ![]() Joined: 06 Dec 05 Location: United Kingdom Online Status: Offline Posts: 1251 |
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Les, Does black mamba make any noise?
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Greatfully Sponsored By
www.allgoodfun.com Int 14 GBR 1503!! |
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BBSCFaithfull ![]() Really should get out more ![]() ![]() Joined: 06 Dec 05 Location: United Kingdom Online Status: Offline Posts: 1251 |
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My 14 is silent. The only thing that makes noise is me saying "where did that F*****G feva come from lol...........
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Greatfully Sponsored By
www.allgoodfun.com Int 14 GBR 1503!! |
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Merlinboy ![]() Really should get out more ![]() Joined: 03 Jul 06 Location: United Kingdom Online Status: Offline Posts: 3169 |
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My laser used to do it back in the ay! Oh how i miss her! I used to have a knact slot gasket on my phantom that cause a fountain when you planed it was annoying because when you are hanging off the transom for dear life it would land right in my face - blinding me not good!!! |
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Medway Maniac ![]() Really should get out more ![]() ![]() Joined: 13 May 05 Location: United Kingdom Online Status: Offline Posts: 2788 |
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Noise generation requires very little energy, but the vibration might have undesirable effects on the boundary layer and consequentially on skin friction drag. Instead of simply thinning the trailing edge, you might like to try the solution proposed by United Technologies Corp in US Patent 4786016: Use of patented subject matter is free for individuals for personal use. |
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les5269 ![]() Really should get out more ![]() ![]() Joined: 11 Oct 05 Location: United Kingdom Online Status: Offline Posts: 1530 |
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Your sailing the wrong 5000's then. My old one never hummed at all and my helms is just as quiet |
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49er 531 & 5000 5025 and a mirror(now gone to mirror heaven)!
Grafham water Sailing Club The greatest inland sailing in the country |
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m_liddell ![]() Really should get out more ![]() Joined: 27 May 05 Location: United Kingdom Online Status: Offline Posts: 583 |
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The 5000 humms lounder than any boat I've ever sailed, it's really really loud. I fixed the hum on a laser buy replacing the pathetic bolt on the stock with an big fat bolt tightened up so that it was effectivly a fixed blade. Sailed a buzz that hummed from the shrouds which was weird. Some windsurf rig/board combos humm too. My 14 is silent |
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49erGBR735HSC ![]() Really should get out more ![]() ![]() Joined: 30 Mar 05 Location: United Kingdom Online Status: Offline Posts: 1991 |
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We had a similar problem with the 5000, fairing the foils appropriately helps but there could also be areas on the mast which are causing the humming noises. The 5000 has a hole at least a few centimetres diameter bored into the top of the mast, so in big winds it used to hum and whistle. We simply taped it up, also preventing the boat from inverting so quickly when we decided to go swimming... We do experience mild humming when sailing at speed but it is from the windage coming off the rig and it's easy to distinguish that sort of humming compared to humming caused by innadequate fairing. |
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Guest ![]() Newbie ![]() Joined: 21 May 04 Location: United Kingdom Online Status: Offline Posts: 0 |
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Boat that do that really annoy me. The way to fix it is to make sure your foil is free of imperfections and sharpen the trailing edge ... Somtimes an assymetric trailing edge is needed. Rick |
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