Aluminum coefficient of thermal expansion is about 13e-6 and SS about 6.5e-6. If the mast from keel to head is 50 ft, and temp change is 100 degrees F mast contracts about 3/4" and stays, which are shorter but angled, contract about 5/16". So, effectively, the temperature loosens the stays for you. If that's a concern for some reason. Jeff Laman 81 C&C34
Get Outlook for Android<https://aka.ms/AAb9ysg> ________________________________ From: Robert Abbott via CnC-List <cnc-list@cnc-list.com> Sent: Wednesday, October 18, 2023 3:52:18 PM To: Stus-List <cnc-list@cnc-list.com> Cc: Hoyt, Mike <mike.h...@impgroup.com>; Robert Abbott <robertabb...@eastlink.ca> Subject: Stus-List winter storage The key to keeping mast up during winter is the cradle....the boats with inadequate or damaged cradles are at risk. I have seen several boats at my club where the boats have toppled and it was the cradle that failed in every instance. And for loosening the rigging in winter....no need if the rig is properly tuned at storage....besides, as someone here mentioned, the aluminum mast shrinks first in extreme cold. Rob Abbott AZURA C&C 32- #277 halifax, N.S. On 2023-10-18 11:19 a.m., Hoyt, Mike via CnC-List wrote: Re mast up. A friend stored his C&C 33-2 with mast up and it blew over in a winter storm. He now has no mast. With mast down possibly the reduced windage would have prevented the boat from blowing over but certainly would have not resulted in a mast broken in three areas. The boat was on a cradle. Food for thought Mike Hoyt Persistence Halifax, NS From: Bob Mann via CnC-List <cnc-list@cnc-list.com><mailto:cnc-list@cnc-list.com> Sent: Wednesday, October 18, 2023 10:45 AM To: Stus-List <cnc-list@cnc-list.com><mailto:cnc-list@cnc-list.com> Cc: Bob Mann <sailrm...@comcast.net><mailto:sailrm...@comcast.net> Subject: Stus-List winter storage Here in Michigan it's time to winterize our boats until April. For those who store their boat with the mast up, do you leave shroud tension alone or do you loosen the shrouds for the winter? Bob Mann Mystic Here in Michigan it's time to winterize our boats until April. For those who store their boat with the mast up, do you leave shroud tension alone or do you loosen the shrouds for the winter? Bob Mann Mystic Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
