If the mast has "sunk" relative to the deck that would explain why the
collar is being pulled down hard on the deck by the mast straps. Looks
to me like the deck adjacent to the mast is being pushed down by the
mast. Without the straps, there would be no compression.
Steve
------ Original Message ------
From: [email protected]
To: [email protected]
Cc: [email protected]
Sent: Wednesday, June 9, 2021 9:53 PM
Subject: Stus-List Re: Deck hold -down?
On our 35-2, the area around the mast collar had wet core, and was
repaired (drilled & filled with epoxy) by the previous owner 20 years
ago. This area is now very solid, basically all epoxy. The mast collar
has 4 bolts through the deck, but also a SS strap on each side, and
these are connected below decks with a bolt though the mast, so most of
the upward force on the collar is transferred to the mast, not the deck.
Just had the mast out for the first time in 20 years when the work was
done, and it still seems very solid.
Possibly adding the straps between the mast and collar (if they are
absent) might help with your deck compression issue.
--
Shawn Wright
[email protected] <mailto:[email protected]>
S/V Callisto, 1974 C&C 35
https://www.facebook.com/SVCallisto
<https://www.facebook.com/SVCallisto>
On Wed, Jun 9, 2021 at 10:06 AM Steve Thomas via CnC-List
<[email protected] <mailto:[email protected]> > wrote:
I have a C&C36 MK1, 1980 version, with the same problem. Starboard is
worse than port but both stick up. When I bought the boat it had been
sitting in the water at a Florida marina, untended for several years.
There were 2 things I noticed that I think might be related. One is that
the rig, though pinned, was quite loose at the time of purchase and one
of the first things I did was take the slack out, not super tight, but
snug. Two, there appears to be a lot of pressure exerted on the deck by
the mast collar through the mast tangs and it looks like it is pulled
down a quarter of an inch or more by looking at the headliner. My first
suspicion was that there is rotten wood under the mast step but I can
see no evidence of it and have not had the opportunity to unstep the
mast yet. Perhaps the hull permanently deforms over time? I have thought
of putting a shim in the step to bring the collar back up a bit.
Steve Thomas
Waiting out the pandemic in Ontario.
Thanks to all of the subscribers that contributed to the list to help with the
costs involved. If you want to show your support to the list - use PayPal to
send contribution -- https://www.paypal.me/stumurray Thanks - Stu
