tag:blogger.com,1999:blog-7703433948859972192.post8825735636753588034..comments2024-03-06T10:53:38.358-04:00Comments on TANTON YACHT DESIGN.: Vendee Globe 2012. In 24 hours; 545.3 miles.Tanton Yacht Designshttp://www.blogger.com/profile/02232366865832775226noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-7703433948859972192.post-13928036457289915812013-02-13T09:34:41.982-04:002013-02-13T09:34:41.982-04:00Rotating rigs without deck spreaders have been aro...Rotating rigs without deck spreaders have been around since the Vendee Globe in 2004 (Ecover 2). In the 2008 VG Aviva and Ecover3 had a rotating rig with one set of fixed spreaders. In this VG Mike Golding had got rid of the rotating rig in order to reduce wweight on his OCDesign 60.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-7703433948859972192.post-74907994681504426202012-12-22T00:45:48.349-04:002012-12-22T00:45:48.349-04:00Buffon a dit quelque chose au sujet de la patience...Buffon a dit quelque chose au sujet de la patience.<br />Anyhow. To replace the outriggers poles adopted by the Vendee Globe boats with rotating masts,it is of my opinion that the lift-producing system with such a mast is of great advantage. Because of the speed of the IMOCA's 60, the apparent wind is more often than not forward of the beam. The boom is not eased to any large amount, permitting the aft fixed shrouds to be anchored further astern. The idea of the outriggers is to increase the open angle between the mast and the point of anchorage.<br />I think I can propose a similar arrangement without the poles. I would add on the mast a long spreader equal to the width of the boat. A light way to reinforce the spar, with the standing rigging set in a diamond fashion to equalize the compression on the mast. The shrouds and stays adequatly placed with opposite forces, including aft shrouds implanted on the side deck. The above making a stronger and even lighter proposition.<br />Now,of course with the spreaders able to rotate with the mast the whole sail plan and specially the fore triangle will have to be carefully designed. The jibs with the exception of the outboard reacher have to take account of the obstruction presented by the rotated spreader. The limit of 110% overlap with a hollow leech is taking care of a 8 t0 10 degrees inboard sheeting angle, as seen on the rendering above. I think that the poles can be eliminated.Tanton Yacht Designshttps://www.blogger.com/profile/02232366865832775226noreply@blogger.comtag:blogger.com,1999:blog-7703433948859972192.post-60326097053681941432012-12-18T09:18:15.720-04:002012-12-18T09:18:15.720-04:00We are impatient to get more about this idea !!!!We are impatient to get more about this idea !!!!Chorushttps://www.blogger.com/profile/04789189143958008396noreply@blogger.com