Or, you could have a Monday morning boat like mine. When I was trying to center the mast, I discovered the chainplate on the starboard side was an inch closer to the rail than the port one.
Gary 30-1 – 1980 (maybe a Friday afternoon boat before vacation time?) From: CnC-List <cnc-list-boun...@cnc-list.com> On Behalf Of Marek Dziedzic via CnC-List Sent: Tuesday, August 20, 2019 12:55 PM To: cnc-list@cnc-list.com Cc: Marek Dziedzic <dziedzi...@hotmail.com> Subject: Re: Stus-List Tuning the mast. I might be stating the obvious, but the boats are not completely symmetrical. They are, after all, made by hand by humans and they all have various imperfections. So the shape might be a bit different on stb or port; the boat might be listing in one direction; the keel and rudder might not be 100% symmetrical etc. On a boat with a keel-stepped mast, the deck opening through which the mast goes might be off by a small amount; as Josh mentioned, a 1/4” might be a lot, when you consider the length of the mast. And on top of that, the growth on the bottom is also asymmetrical (the stuff grows on the sunny side more than the opposite). in short, I would not consider difference in performance on different tacks as the symptom of a off-centre mast. It might be, but it is not the only one. Marek 1994 C270 Legato Ottawa, ON From: Len Mitchell via CnC-List Sent: Tuesday, August 20, 2019 12:33 To: CNC List Cc: Len Mitchell Subject: Stus-List Tuning the mast. I am following this thread with great interest. I measured distances using the main halyard and believe my mast is plumb. The partners and foot hold the mast centred as far as I can tell and as long as the boat, keel and rudder are symmetrical. I continue to point higher and get better performance on a starboard tack and the boat lists a couple degrees at anchor, probably because of the battery bank located sb. There are more reasons than mast plumb that a boat performs better on one tack is my point. I noted better sb performance with all combinations of water tank and holding tank levels. I have tried for over 10 years to tune a better balance but she still sails a little better on starboard tack! Len Mitchell Crazy Legs 1989 37+ Midland On Sent from my iPad _______________________________________________ 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
