In light air, dead downwind will be faster. Set your way point for dead downwind and measure your VMG both ways to find out when it no longer makes sense
Joel On Sat, Jun 30, 2018 at 6:54 PM David Knecht via CnC-List < cnc-list@cnc-list.com> wrote: > I guess my real question is whether the boat is faster dead downwind with > the whisker pole or tacking downwind at the polar angle optimum. I have > always used the whisker pole and the shorter distance, and have not yet > tried the other route. Has anyone tested this themselves? Dave > > On Jun 30, 2018, at 12:17 PM, Ronald B. Frerker via CnC-List < > cnc-list@cnc-list.com> wrote: > > Polars presume a spinnaker at the crossover point where the chute is > faster than jib & main. > As for downwind speed, the Marchaj (sp?) book has data to back the old > theory that if you reverse your best beat upwind, you will be going the > same speed downwind. > When the wind speed increases to the point of reefing or smaller jibs, all > bets are off on that theory. Then wing & wing will often be faster. > Ron > Wild Cheri > C&C 30-1 > STL > > -----Original Message----- > From: David Knecht via CnC-List <cnc-list@cnc-list.com> > To: CnC CnC discussion list <CnC-List@cnc-list.com> > Cc: David Knecht <davidakne...@gmail.com> > Sent: Sat, Jun 30, 2018 7:48 am > Subject: Stus-List downwind polars > > The polars for my boat predict an optimal downwind speed at an angle > around 145° true. Does anyone know what assumptions are made in this > prediction about spinnakers and whisker poles? I race non-spinnaker and > often on windward-leeward courses so we are often dead downwind and the > whisker pole makes a huge difference going downwind wing on wing. I am > wondering if the polars take this into account. Dave > > Aries > 1990 C&C 34+ > New London, CT > > <pastedGraphic.tiff> > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each and > every one is greatly appreciated. If you want to support the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > <pastedGraphic.tiff>_______________________________________________ > > > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > > Dr. David Knecht > Professor of Molecular and Cell Biology > University of Connecticut > 91 N. Eagleville Rd. > Storrs, CT 06269-3125 > > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > -- Joel 301 541 8551
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