Re: Stus-List Technical sail discussion

2014-05-08 Thread jtsails via CnC-List
Subject: Re: Stus-List Technical sail discussion Dennis, My limited understanding of aerodynamics is that if the foot is not on the dock then the higher pressure is allowed to leak under the foot to the low pressure side, diminishing lift. That's why they now have tips on airplane wings

Re: Stus-List Technical sail discussion

2014-05-08 Thread Chuck S via CnC-List
1990 CC 34R Atlantic City, NJ - Original Message - From: CNC boat owners, cnc-list cnc-list@cnc-list.com To: CNC boat owners, cnc-list cnc-list@cnc-list.com Sent: Thursday, May 8, 2014 5:08:47 PM Subject: Re: Stus-List Technical sail discussion Joel and Dennis, If you really want

Stus-List Technical sail discussion

2014-05-07 Thread Dennis C. via CnC-List
I recently re-filed my PHRF certificate to get +6 seconds for a roller furler. Subsequently, I just had the luff my Mylar/Kevlar 155 cut down to fit on the furler. My sailmaker cut a bunch off the foot. I was chatting about loosing the sail area with one of the really good sailors in the

Re: Stus-List Technical sail discussion

2014-05-07 Thread Joel Aronson via CnC-List
Dennis, My limited understanding of aerodynamics is that if the foot is not on the dock then the higher pressure is allowed to leak under the foot to the low pressure side, diminishing lift. That's why they now have tips on airplane wings. If the cabin causes upward deflection, that may be more

Re: Stus-List Technical sail discussion

2014-05-07 Thread Ron Casciato via CnC-List
-list.com Subject: Re: Stus-List Technical sail discussion Dennis, My limited understanding of aerodynamics is that if the foot is not on the dock then the higher pressure is allowed to leak under the foot to the low pressure side, diminishing lift. That's why they now have tips

Re: Stus-List Technical sail discussion

2014-05-07 Thread Martin DeYoung via CnC-List
. Martin Calypso 1971 CC 43 Seattle -Original Message- From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Dennis C. via CnC-List Sent: Wednesday, May 07, 2014 5:51 AM To: cnc-list@cnc-list.com Subject: Stus-List Technical sail discussion I recently re-filed my PHRF certificate

Re: Stus-List Technical sail discussion

2014-05-07 Thread Joel Aronson via CnC-List
-boun...@cnc-list.com] On Behalf Of Dennis C. via CnC-List Sent: Wednesday, May 07, 2014 5:51 AM To: cnc-list@cnc-list.com Subject: Stus-List Technical sail discussion I recently re-filed my PHRF certificate to get +6 seconds for a roller furler. Subsequently, I just had the luff my Mylar

Re: Stus-List Technical sail discussion

2014-05-07 Thread Gary Nylander via CnC-List
To: Dennis C. capt...@gmail.com; cnc-list@cnc-list.com Sent: Wednesday, May 07, 2014 1:32 PM Subject: Re: Stus-List Technical sail discussion Calypso's headsails were also cut for a furler with the higher foot, now about 18 off the deck. We still get a significant speed bubble in the main

Re: Stus-List Technical sail discussion

2014-05-07 Thread Chuck S via CnC-List
tune accordingly. Chuck Resolute 1990 CC 34R Atlantic City, NJ - Original Message - From: CNC boat owners, cnc-list cnc-list@cnc-list.com To: CNC boat owners, cnc-list cnc-list@cnc-list.com Sent: Wednesday, May 7, 2014 8:51:27 AM Subject: Stus-List Technical sail discussion I

Re: Stus-List Technical sail discussion

2014-05-07 Thread Dennis C. via CnC-List
-List Technical sail discussion Calypso's headsails were also cut for a furler with the higher foot, now about 18 off the deck. We still get a significant speed bubble in the main at the mid to upper wind range for the light and heavy #1s. The bubble shows up 6' to 25' (off the deck