Joel According to the polar diagrams I have for a 35 MKII the optimum VMG on the run in 10 kts true wind is at an angle of 148 degrees, at 12 kts it is at 162 degrees, at 16 kts it is at 173 degrees and at 20 kts it is 174 degrees. This agrees with Dennis's reply but gives you some numbers. These numbers are based on a 153% jib but the optimum angles might be quite similar with the spinnaker.
For the 35 MKII the VMG at 20 kts and 174 degrees is 7.65, at 16 kts and 173 degrees it is 6.90, at 12 kts and 162 degrees it is 5.82 and at 10 kts and148 degrees it is 5.08. These wind levels are all true wind. I expect numbers for the 35 MKIII might be quite similar. If the kite is newer and not picked I would say you could probably use the 1/2 oz up to 12 kts true, maybe higher, as long as you sail at 162 degrees or above to 180 ...the 1/2 oz probably may not last long if you try to reach closer at 12 kts true wind. The size and cut of the spinnaker are just as important as the cloth weight but I assume a 1/2 oz or light air kite is 180% and tri radial cut. My lightest kite was a 180%, 3/4 oz so I am just making an educated guess about the 1/2 oz sail. Dwight Veinot C&C 35 MKII, Alianna Head of St. Margaret's Bay, NS -----Original Message----- From: cnc-list-boun...@cnc-list.com [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Joel Aronson Sent: September 20, 2012 8:55 AM To: cnc-list@cnc-list.com Subject: Stus-List final spinnaker questions 2 questions: What is the maximum wind speed for a 1/2 oz chute? What is the ideal apparent wind angle on a downwind leg to get to the leeward mark on a 35/3? 140 degrees 150 degrees 160 degrees? Assuming about a 10 knot wind and calm seas. Joel 35/3 The Office Annapolis Sent from my iPad _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2441/5277 - Release Date: 09/19/12 _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
