I was under the impression that the bolts on my 30-1 are to be torqued to over
300 pounds. Am I mistaken?
Gary
From: CnC-List On Behalf Of Chris Bennett via
CnC-List
Sent: Saturday, April 25, 2020 2:15 PM
To: cnc-list@cnc-list.com
Cc: Chris Bennett
Subject: Re: Stus-List Keel movement
Russ - thanks for the west coast humour - yes we are lucky here to have our
boats in the water year round - though it does have its downsides too in
that the hulls never dry out and growth on the bottom continues even in the
winter.
The torques I applied to the 3/4 inch bolts were around 140 foot
If you lubricate the threads, reduce the torque by 10%. The torque
values on the list (which I generated decades ago) are based on dry
threads. They calculate a little high on the nebulous yield strengths
of stainless steels. Be careful going on the high side.
Neil Schiller
1983 C 35-3,
Good thinking and execution!
Sent from my iPhone
> On Apr 24, 2020, at 7:57 PM, Chris Bennett via CnC-List
> wrote:
>
>
> Josh and Rob - thanks for your comments. I did torque the bolts while in the
> water after reading a convincing post about how little extra torque is needed
> to
Josh and Rob - thanks for your comments. I did torque the bolts while in
the water after reading a convincing post about how little extra torque is
needed to overcome the weight of the keel (think of the leverage of each
bolt's screw thread). The suggestion for a much heavier keel only worked
out
Hi Chris & Josh,
I am not in agreement that keel bolts can only be
tightened while the boat is ashore.
While that is a convenient activity during the
annual haulout period that Eastern boats get, it
is not entirely practical for us on the West
Coast or the lads down south. We might only
generated by
torquing each of those bolts to spec.Food for thought,Bruce1994
C/40+"Astralis"Sent from Samsung tablet.
Original message From: Josh Muckley via CnC-List
Date: 4/24/20 11:16 AM (GMT-05:00) To: C List
Cc: Josh Muckley Subject: Re:
Stus-List Keel moveme
Josh,
If Chris rebuilt the mast step, he must have unstepped the
mast..don't know how one could rebuild it without the mast out.
Rob
On 4/24/2020 12:15 PM, Josh Muckley via CnC-List wrote:
Chris,
The prevailing wisdom of this list suggests that the keel bolts only
be torqued while the
Chris,
The prevailing wisdom of this list suggests that the keel bolts only be
torqued while the boat is resting on its keel, generally about 60% of it's
weight depending on the design. In this way you are not turning the nuts
against the weight of the keel or even trying to compress the bedding
On 4/23/2020 9:58 PM, Chris Bennett via CnC-List wrote: " two by a turn
or more and the other two by less than a turn. I will know if this
removed the keel movement when the boat is next hauled out, although I
am also thinking of diving on her to see if I can detect any wiggle that
way (I live
Status update: I ended up torquing the keel bolts. They were not incredibly
loose but all of them needed tightening, two by a turn or more and the
other two by less than a turn. I will know if this removed the keel
movement when the boat is next hauled out, although I am also thinking of
diving on
Thanks Denis for the suggestion - I will read up on torque multipliers.
Joe - Thanks for your comments. The C 24 has large stainless washers (in
one case quite a few of them stacked) to spread the load. I will go
carefully so as not to crush the fibreglass and if I cannot approach the
correct
It isn't just a matter of a torque wrench. It may require a torque
multiplier. Most readily available torque wrenches won't do it.
Several on the list have done this and benefited by using a torque
multiplier. Perhaps they could offer additional suggestions regarding
multipliers. Something
For anyone interested, the keel bolt nuts on the C 24 are 3/4 inch at the
front of the keel followed by 3 nuts that are 1 1/8". I found the forward
nut (the only one I had a socket for) to be barely more than hand
tightened. According to specs I found on the C owners site this should be
at 80 foot
Hi John,
Thanks for the tip - will take a look at the Mirage 24 site.
Regards,
Chris
___
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
-boun...@cnc-list.com] On Behalf Of Chris
Bennett via CnC-List
Sent: Monday, April 20, 2020 12:28 PM
To: cnc-list@cnc-list.com; mike.h...@impgroup.com
Cc: Chris Bennett
Subject: [EXTERNAL] Re: Stus-List Keel movement in C 24
Hi Mike,
Thanks for the suggestions. I will test the torque
Persistence
1987 Frers 33 #16
Halifax, NS
www.hoytsailing.com<http://www.hoytsailing.com>
From: CnC-List On Behalf Of Robert Abbott via
CnC-List
Sent: April 20, 2020 12:42 PM
To: Chris Bennett
Cc: Robert Abbott ; cnc-list@cnc-list.com
Subject: Re: Stus-List Keel movement in C 24
Chris:
Hi Mike,
Thanks for the suggestions. I will test the torque of the bolts later today
if my socket is deep enough to do so. If they have not been tightened for
35 years (and the original long term owner assured me he had never done so)
then maybe this is the issue.
Regards,
Chris
>
> Thanks Gary and Joe for your positive comments and suggestions. As I
> replied to Rob, I am also going to check the keel bolt torques as this may
> be the underlying issue. I will definitely rebuild the mast step as well
> and get this area level before replacing the compression post base.
Thanks Rob,
I will inspect as you suggest. I have also had a few people suggest that I
may be looking in the wrong area and that the problem may simply be that
the keel bolts are too loose - not loose enough that the keel to sump
bonding has failed but loose enough that the keel is moving against
, 2020 12:42 PM
To: Chris Bennett
Cc: Robert Abbott ; cnc-list@cnc-list.com
Subject: Re: Stus-List Keel movement in C 24
Chris:
Inside, check grid structures and interior pans for cracks, from the pics I
think I can see some cracks. Probe all grid, pan, floor, step, and bulkhead
bonds wit
Chris:
Inside, check grid structures and interior pans for cracks, from the
pics I think I can see some cracks. Probe all grid, pan, floor, step,
and bulkhead bonds with your flexible blade.
Should your inspection reveal hull damage or weakness, you’ll need to
deal with this first.
-list.com
Cc: Della Barba, Joe
Subject: Re: Stus-List Keel movement in C 24
Wow – sorry to hear about this :(
First off, do NOT troubleshoot this in the water unless prepared to swim home!
I think you can do the “survey” yourself, just have the boat in the slings and
grab the keel. It sounded
Wow – sorry to hear about this ☹
First off, do NOT troubleshoot this in the water unless prepared to swim home!
I think you can do the “survey” yourself, just have the boat in the slings and
grab the keel. It sounded like a pretty obvious issue. Assuming you find this
is actually a problem,
Lewis - thanks for the suggestion re the video - they did a great job of
repairing the floors in that boat - what a huge project! The link is here:
https://www.youtube.com/watch?v=OyKy-cDy6e8
Neil - thanks for your comments. I wish I had been there for the survey but
it was done by the buyer in
Hi Chris,
Your mast compression post issue is a slightly different version of what
many C of your vintage have experienced. My 35-1 has basically that
same construction to support the bottom of the mast: a stack of plywood
lightly encased in fiberglass that spans the bilge at the turn of the
There is a Youtube video I believe the channel is called sailing Uma. They
have a pearson 38 with the same problem (keel wag) anyhow there is a full
video of them repairing it, hope that helps.
Lewis Cooke
S/V For Play
C 30-1 #45
On Apr 19, 2020 9:46 PM, "Chris Bennett via CnC-List"
wrote:
Forgot to add that the surveyor has said he will not provide further
comment without an additional survey...
On Sun, 19 Apr 2020 at 17:26, Robert Abbott
wrote:
> Chris,
>
> Trying to understand exactly what you are describing without a
> pictureare you saying the keel is tight to the keel
Hi Rob,
I do have pictures but do not know how best to post them to this forum so I
will upload them to my google drive. This is the shareable link:
https://drive.google.com/open?id=1qEfA4WHGKMVUk6bKch9X4-hXn76AR46C
The issue I believe from examining the bilge area is that my C 24 has
stiffeners
Chris,
Trying to understand exactly what you are describing without a
pictureare you saying the keel is tight to the keel box but the keel
box is cracked from the hull? If there is no 'smile' and your keel
moves 4" side to side, what else could it be? If I understand
correctly, that's
Hi folks,
I own Drifter, a C 24 from 1985. A recent survey by a potential buyer
found that despite the keel being well attached (no 'smile' or obvious
issues with the sump to keel joint) the keel moves up to 4 inches from side
to side while the boat is hanging in the slings. The surveyor
31 matches
Mail list logo
