Re: Stus-List downwind polars

The polars I've seen for a number of boats all seem to indicate that sailing off DDW will be faster especially in winds speeds from around five up.  One can tell at a glance by looking for the "bulge" in the curve on the plotted part of the polars.  Below that wind speed I don't know how reliab

Re: Stus-List downwind polars

ri > C&C 30-1 > STL > > -Original Message- > From: David Knecht via CnC-List > To: CnC CnC discussion list > Cc: David Knecht > Sent: Sat, Jun 30, 2018 7:48 am > Subject: Stus-List downwind polars > > The polars for my boat predict an optimal downwi

Re: Stus-List downwind polars

half Of David Knecht via CnC-List Sent: June-30-18 7:54 PM To: CnC CnC discussion list Cc: David Knecht Subject: Re: Stus-List downwind polars 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 al

Re: Stus-List downwind polars

nal Message- > From: David Knecht via CnC-List > To: CnC CnC discussion list > Cc: David Knecht > 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.

Re: Stus-List downwind polars

--Original Message- > From: David Knecht via CnC-List > To: CnC CnC discussion list > Cc: David Knecht > 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.

Re: Stus-List downwind polars

the point of reefing or smaller jibs, all bets are off on that theory.  Then wing & wing will often be faster.RonWild CheriC&C 30-1STL -Original Message- From: David Knecht via CnC-List To: CnC CnC discussion list Cc: David Knecht Sent: Sat, Jun 30, 2018 7:48 am Subject: Stus-L

Re: Stus-List downwind polars

Hi David, One of the features of the SailTimer App and Wind Instrument (http://www.sailtimerapp.com , http://sailtimerwind.com ) that attracted me to buy them is that the app can create polar diagrams for your specific boat and specific

Re: Stus-List downwind polars

I think most polars assume a kite will be used downwind. cenel...@aol.com -Original Message- From: David Knecht via CnC-List To: CnC CnC discussion list Cc: David Knecht Sent: Sat, Jun 30, 2018 7:48 am Subject: Stus-List downwind polars The polars for my boat predict an optimal

Re: Stus-List downwind polars

The downwind polars on the J109 I race on regularly definitely assume spinnaker use. The Class jib is barely more than 100% (maybe 105%) and if going downwind jib and main only we’d never finish! The polars we steer to give precise wind angles depending on true wind speed. The lighter the wind,

Re: Stus-List downwind polars

David, I’m pretty sure polars are for standard jib and main configuration and do not account for wing-on-wing pole use or spinnaker use. All the best, Edd --- Edd M. Schillay Captain of the Starship Enterprise C&C 37+ | Sail No: NCC-1701-B City Island, New Yo

Re: Stus-List downwind polars

I think the assumption is that downwind you'll only ever go as fast as the wind. Maybe I'm thinking about it wrong. Josh Muckley S /V Sea Hawk 1989 C&C 37+ Solomons, MD On Sat, Jun 30, 2018, 7:48 AM David Knecht via CnC-List < cnc-list@cnc-list.com> wrote: > The polars for my boat predict an

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 pol