I would recommend a 3:1/6:1 arrangement with double line, something like this: https://www.dropbox.com/sh/aktbkuov19c4q9y/AACSrPhw1Xq758Tk8U7fae1ea?dl=0. All blocks are Garhauer. The special double block, double cam was around $75.
Mine is a 27 ft boat, so the forces are respectively smaller. Originally, it was a 4:1, two-ended, with one end on the cam cleat and the other on the winch. Going upwind in any fresh breeze, there was no way I could trim by hand (at least, not easily). With the 6:1, I never had problems, even at strong winds. The 3:1/6:1 arrangement eliminates the issue of having too much line for e.g., gybing. NB. I don't think this would work well with a dodger. Marek 1994 C270 ”Legato” Ottawa, ON Unfortunately, already on the hard (at +18 °C and 10 kt breeze) -----Original Message----- From: Joe Della Barba via CnC-List Sent: Sunday, October 23, 2022 12:37 PM To: 'Stus-List' <cnc-list@cnc-list.com> Cc: j...@dellabarba.com Subject: Stus-List 35 MK I Mainsheet and Vang I just now unrigged the mainsheet and replaced it with a 4:1 mainsheet and cam cleat that I had as a preventer for a proof-of-concept. The preventer has been on the boat for so long I forgot where it came from, but looking at the mainsheet systems online and at Bacons it became obvious this IS a mainsheet so I decided to try it out. So far it has only got a light air test, I am loving the lack of friction compared to the stock system that goes up to the mast and back to a winch. My question is this; will 4:1 be enough? Bacon's has a 6:1 mainsheet for a reasonable price, I can buy that and send the 4:1 back to preventer duty easily enough. While I was at it I noticed the vang, one of those Quick-Vangs with a spring, had the line fed through a turning block far enough from the mast that it had a significant change in tension as the boom swung. I have no idea how I haven't stared at this for decades and not noticed, the yard installed it ages ago and I just never realized they did it wrong. Now the line feeds to a turning block almost at the pivot point, changes in tension will be almost nonexistant. Joe Della Barba Coquina C&C 35 MK I Kent Island MD USA
