Re: Stus-List Mast step Stringers

[Josh Muckley via CnC-List]

Mine had what looked like medium/high density filler laid under the step as
a leveling agent.  Some of this material was found in/under/around other
areas but nothing in a manner which came close to filling the stringers.
The original screw holes were drilled at a weird angle because the floor
liner wouldn't allow a straight down approach.  Since I cut back the floor
liner to get the step out I now had access for a vertical approach.  I used
west systems six10 to fill all the old holes and finish/dress the step
bed.  I laid the step in place and squared it to the adjacent floor boards,
marked my holes, Removed the step, drilled for the applicable lag bolts
(3/8th IIRC), reset the step and then with a bit of tef-gel between the
washers and the step installed the lad screws.

It's not like there is a significant concern for the mast/step to lift off
the bed.  The screws act as much like an alignment pin as anything.

Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD

On Wed, Apr 11, 2018, 9:49 AM Brian Fry via CnC-List <cnc-list@cnc-list.com>
wrote:

> Thank you Ken.. Very helpful. I will take another look. I do have an
> access hole drilled thru one of the stringers to be able to torque one of
> the bolts, If I recall it is not hollow. There are also bilge drain holes
> from bay to bay, again they are not hollow.
>
> I agree the drawings show no material inside, but then what would the mast
> step plate be screwed to?
>
> My concern is that they are bulging.
> I take it yours don't have the bulging issue?
>
> Any thoughts on injecting epoxy?
> Thanks again.
>
>
>> Message: 4
>> Date: Wed, 11 Apr 2018 06:27:52 -0300
>> From: Ken Heaton <kenhea...@gmail.com>
>> To: cnc-list <cnc-list@cnc-list.com>
>> Subject: Re: Stus-List Mast step stringers
>> Message-ID:
>> <
>> caabfp6tcwvtcrwge5y3x_1k3t21an8xbkdf6xqzjy9rkkuy...@mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Hello Brian,
>>
>> I would be very surprised to find there was any wood inside the
>> 'stringers'
>> on a C 37/40.  There is no mention of wood used in any part of this
>> boat's construction anywhere (except in the sole, in bulkheads and
>> cabinetry) in any documents I have see for these hulls.
>>
>> I was sure the `stringers` were either completely hollow or there was
>> perhaps foam inside, but only to hold their shape while they are tabbbed
>> to
>> the hull on initial construction.  One `stringer` just aft of the two that
>> support the mast step, has a large hole drilled in the top to access a
>> keel
>> bolt.  It is completely hollow.
>>
>>
>> Here is a link to the construction drawing for that hull:
>>
>> Here: https://drive.google.com/file/d/0B7X4Y5iVFYAKYTJxRDJBc3BvLWM/
>> view?usp=sharing
>> <https://drive.google.com/file/d/0B7X4Y5iVFYAKYTJxRDJBc3BvLWM/%0Dview?usp=sharing>
>>
>> and here: https://drive.google.com/file/d/0B7X4Y5iVFYAKcDd4ZlhWNGZzdmM/
>> view?usp=sharing
>> <https://drive.google.com/file/d/0B7X4Y5iVFYAKcDd4ZlhWNGZzdmM/%0Dview?usp=sharing>
>>
>> Ken H.
>>
>>
>>
>> On 10 April 2018 at 22:37, Brian Fry via CnC-List <cnc-list@cnc-list.com>
>> wrote:
>>
>> > 1993 37/40.
>> > Redoing the rod rigging, mast is down. Removed the aluminum mast step to
>> > media blast and powder coat.
>> > There are three `stringers` the mast step sits on. The forward and aft
>> > stringers,which the step is bolted to, are bulging. Tapping on them
>> reveals
>> > a delamination inside.
>> > I am thinking this is caused by forces from the adjustable mast crushing
>> > the laminate wood inside. The bay this is in is too high to be caused by
>> > water intrusion.
>> > Anyone else experiencing this?
>> > The plan is to drill holes and inject epoxy, then bolt on a suupport
>> piece
>> > of 1/2" aluminum across the face, bolted into the solid parts of the
>> > stringer.
>> > Any input is welcome.
>> >
>> > S/V La Neige
>> > 1993 C 37/40 XL
>> > Havre de Grace , MD
>> > FB blog : thenext14years
>> > Brian and Manon
>> >
>> > ___
>> >
>> > 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
>> >
>> >
>> >
>> -- next part --
>> An HTML attachment was 

Re: Stus-List Mast step Stringers

[Gary Nylander via CnC-List]

I am just finishing the rebuild of the mast step on my 30-1. It was not high 
tech at all like the later boats, using cross-wise stringers made of plywood 
which had fiberglass on the top and sides but not on the bottom where the water 
gathers. After 36 years and a couple of repairs, they were soggy! Deciding that 
letting water sit in the deep part of the sump, where only a small bilge pump 
would fit and when clogged up with some gunk or pieces of delaminating plywood, 
would fail, requiring the removal of the mast to replace, I dumped three quarts 
of West epoxy down there to create a small slope from front to rear and get the 
water back into the area where an installed bilge pump is accessible. I did it 
in stages with slow hardener, which avoided the heat problem and then covered 
it with a layer of cloth/mat. Three new stringers, each made of two sandwiched 
¾ inch UHMW (almost as hard as the red stuff, but easier to machine) now sit on 
top of that new sloped area to keep it dry. I put a piece of 2” PVC pipe around 
the one keel bolt to allow access. I hope it will outlive the rest of the boat. 

 

Gary Nylander 30-1 #593

 

From: CnC-List <cnc-list-boun...@cnc-list.com> On Behalf Of Ken Heaton via 
CnC-List
Sent: Wednesday, April 11, 2018 9:54 AM
To: cnc-list <cnc-list@cnc-list.com>
Cc: Ken Heaton <kenhea...@gmail.com>
Subject: Re: Stus-List Mast step Stringers

 

" Any thoughts on injecting epoxy? "

 

It will take a lot of epoxy if the floors are mostly hollow.  And beware of 
heat if a large amount of epoxy is curing in an enclosed space.  Perhaps the 
slowest possible hardener in the mix?

 

I am not an expert...

 

Ken H.

 

 

On 11 April 2018 at 10:48, Brian Fry via CnC-List <cnc-list@cnc-list.com 
<mailto:cnc-list@cnc-list.com> > wrote:

Thank you Ken.. Very helpful. I will take another look. I do have an access 
hole drilled thru one of the stringers to be able to torque one of the bolts, 
If I recall it is not hollow. There are also bilge drain holes from bay to bay, 
again they are not hollow.

 

I agree the drawings show no material inside, but then what would the mast step 
plate be screwed to? 

 

My concern is that they are bulging. 

I take it yours don't have the bulging issue?

 

Any thoughts on injecting epoxy?

Thanks again.

 


Message: 4
Date: Wed, 11 Apr 2018 06:27:52 -0300
From: Ken Heaton <kenhea...@gmail.com <mailto:kenhea...@gmail.com> >
To: cnc-list <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> >
Subject: Re: Stus-List Mast step stringers
Message-ID:
<caabfp6tcwvtcrwge5y3x_1k3t21an8xbkdf6xqzjy9rkkuy...@mail.gmail.com 
<mailto:caabfp6tcwvtcrwge5y3x_1k3t21an8xbkdf6xqzjy9rkkuy...@mail.gmail.com> >
Content-Type: text/plain; charset="utf-8"

Hello Brian,

I would be very surprised to find there was any wood inside the 'stringers'
on a C 37/40.  There is no mention of wood used in any part of this
boat's construction anywhere (except in the sole, in bulkheads and
cabinetry) in any documents I have see for these hulls.

I was sure the `stringers` were either completely hollow or there was
perhaps foam inside, but only to hold their shape while they are tabbbed to
the hull on initial construction.  One `stringer` just aft of the two that
support the mast step, has a large hole drilled in the top to access a keel
bolt.  It is completely hollow.


Here is a link to the construction drawing for that hull:

Here: https://drive.google.com/file/d/0B7X4Y5iVFYAKYTJxRDJBc3BvLWM/ 
<https://drive.google.com/file/d/0B7X4Y5iVFYAKYTJxRDJBc3BvLWM/view?usp=sharing> 
view?usp=sharing

and here: https://drive.google.com/file/d/0B7X4Y5iVFYAKcDd4ZlhWNGZzdmM/ 
<https://drive.google.com/file/d/0B7X4Y5iVFYAKcDd4ZlhWNGZzdmM/view?usp=sharing> 
view?usp=sharing

Ken H.



On 10 April 2018 at 22:37, Brian Fry via CnC-List <cnc-list@cnc-list.com 
<mailto:cnc-list@cnc-list.com> >
wrote:

> 1993 37/40.
> Redoing the rod rigging, mast is down. Removed the aluminum mast step to
> media blast and powder coat.
> There are three `stringers` the mast step sits on. The forward and aft
> stringers,which the step is bolted to, are bulging. Tapping on them reveals
> a delamination inside.
> I am thinking this is caused by forces from the adjustable mast crushing
> the laminate wood inside. The bay this is in is too high to be caused by
> water intrusion.
> Anyone else experiencing this?
> The plan is to drill holes and inject epoxy, then bolt on a suupport piece
> of 1/2" aluminum across the face, bolted into the solid parts of the
> stringer.
> Any input is welcome.
>
> S/V La Neige
> 1993 C 37/40 XL
> Havre de Grace , MD
> FB blog : thenext14years
> Brian and Manon
>
> ___
>
> Thanks everyone for supporting this list with your contributions.  Each
> and eve

Re: Stus-List Mast step Stringers

[Ken Heaton via CnC-List]

" Any thoughts on injecting epoxy? "

It will take a lot of epoxy if the floors are mostly hollow.  And beware of
heat if a large amount of epoxy is curing in an enclosed space.  Perhaps
the slowest possible hardener in the mix?

I am not an expert...

Ken H.


On 11 April 2018 at 10:48, Brian Fry via CnC-List <cnc-list@cnc-list.com>
wrote:

> Thank you Ken.. Very helpful. I will take another look. I do have an
> access hole drilled thru one of the stringers to be able to torque one of
> the bolts, If I recall it is not hollow. There are also bilge drain holes
> from bay to bay, again they are not hollow.
>
> I agree the drawings show no material inside, but then what would the mast
> step plate be screwed to?
>
> My concern is that they are bulging.
> I take it yours don't have the bulging issue?
>
> Any thoughts on injecting epoxy?
> Thanks again.
>
>
>> Message: 4
>> Date: Wed, 11 Apr 2018 06:27:52 -0300
>> From: Ken Heaton <kenhea...@gmail.com>
>> To: cnc-list <cnc-list@cnc-list.com>
>> Subject: Re: Stus-List Mast step stringers
>> Message-ID:
>> <CAAbfP6TcwvtcRwgE5Y3X_1k3t21An8XBkDf6XQzJY9RkKuyRAA@mail.
>> gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Hello Brian,
>>
>> I would be very surprised to find there was any wood inside the
>> 'stringers'
>> on a C 37/40.  There is no mention of wood used in any part of this
>> boat's construction anywhere (except in the sole, in bulkheads and
>> cabinetry) in any documents I have see for these hulls.
>>
>> I was sure the `stringers` were either completely hollow or there was
>> perhaps foam inside, but only to hold their shape while they are tabbbed
>> to
>> the hull on initial construction.  One `stringer` just aft of the two that
>> support the mast step, has a large hole drilled in the top to access a
>> keel
>> bolt.  It is completely hollow.
>>
>>
>> Here is a link to the construction drawing for that hull:
>>
>> Here: https://drive.google.com/file/d/0B7X4Y5iVFYAKYTJxRDJBc3BvLWM/
>> view?usp=sharing
>> <https://drive.google.com/file/d/0B7X4Y5iVFYAKYTJxRDJBc3BvLWM/view?usp=sharing>
>>
>> and here: https://drive.google.com/file/d/0B7X4Y5iVFYAKcDd4ZlhWNGZzdmM/
>> view?usp=sharing
>> <https://drive.google.com/file/d/0B7X4Y5iVFYAKcDd4ZlhWNGZzdmM/view?usp=sharing>
>>
>> Ken H.
>>
>>
>>
>> On 10 April 2018 at 22:37, Brian Fry via CnC-List <cnc-list@cnc-list.com>
>> wrote:
>>
>> > 1993 37/40.
>> > Redoing the rod rigging, mast is down. Removed the aluminum mast step to
>> > media blast and powder coat.
>> > There are three `stringers` the mast step sits on. The forward and aft
>> > stringers,which the step is bolted to, are bulging. Tapping on them
>> reveals
>> > a delamination inside.
>> > I am thinking this is caused by forces from the adjustable mast crushing
>> > the laminate wood inside. The bay this is in is too high to be caused by
>> > water intrusion.
>> > Anyone else experiencing this?
>> > The plan is to drill holes and inject epoxy, then bolt on a suupport
>> piece
>> > of 1/2" aluminum across the face, bolted into the solid parts of the
>> > stringer.
>> > Any input is welcome.
>> >
>> > S/V La Neige
>> > 1993 C 37/40 XL
>> > Havre de Grace , MD
>> > FB blog : thenext14years
>> > Brian and Manon
>> >
>> > ___
>> >
>> > 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
>> >
>> >
>> >
>> -- next part --
>> An HTML attachment was scrubbed...
>> URL: <http://cnc-list.com/pipermail/cnc-list_cnc-list.com/
>> attachments/20180411/f086594e/attachment-0001.html>
>>
>> --
>>
>> Message: 5
>> Date: Wed, 11 Apr 2018 09:20:27 -0300
>> From: Ken Heaton <kenhea...@gmail.com>
>> To: cnc-list <cnc-list@cnc-list.com>
>> Subject: Re: Stus-List Mast step stringers
>> Message-ID:
>> <caabfp6tplokmqxxsubhrhwfnwrydpgws7ws9pevyadblr06...@mail.gm
>> ail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Part 2
>>
>> Hi Brian,
>>
>> The  'stringers' you refer to are 

Re: Stus-List Mast step Stringers

[Brian Fry via CnC-List]

Thank you Ken.. Very helpful. I will take another look. I do have an access
hole drilled thru one of the stringers to be able to torque one of the
bolts, If I recall it is not hollow. There are also bilge drain holes from
bay to bay, again they are not hollow.

I agree the drawings show no material inside, but then what would the mast
step plate be screwed to?

My concern is that they are bulging.
I take it yours don't have the bulging issue?

Any thoughts on injecting epoxy?
Thanks again.


> Message: 4
> Date: Wed, 11 Apr 2018 06:27:52 -0300
> From: Ken Heaton <kenhea...@gmail.com>
> To: cnc-list <cnc-list@cnc-list.com>
> Subject: Re: Stus-List Mast step stringers
> Message-ID:
> <CAAbfP6TcwvtcRwgE5Y3X_1k3t21An8XBkDf6XQzJY9RkKuyRAA@
> mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hello Brian,
>
> I would be very surprised to find there was any wood inside the 'stringers'
> on a C 37/40.  There is no mention of wood used in any part of this
> boat's construction anywhere (except in the sole, in bulkheads and
> cabinetry) in any documents I have see for these hulls.
>
> I was sure the `stringers` were either completely hollow or there was
> perhaps foam inside, but only to hold their shape while they are tabbbed to
> the hull on initial construction.  One `stringer` just aft of the two that
> support the mast step, has a large hole drilled in the top to access a keel
> bolt.  It is completely hollow.
>
>
> Here is a link to the construction drawing for that hull:
>
> Here: https://drive.google.com/file/d/0B7X4Y5iVFYAKYTJxRDJBc3BvLWM/
> view?usp=sharing
>
> and here: https://drive.google.com/file/d/0B7X4Y5iVFYAKcDd4ZlhWNGZzdmM/
> view?usp=sharing
>
> Ken H.
>
>
>
> On 10 April 2018 at 22:37, Brian Fry via CnC-List <cnc-list@cnc-list.com>
> wrote:
>
> > 1993 37/40.
> > Redoing the rod rigging, mast is down. Removed the aluminum mast step to
> > media blast and powder coat.
> > There are three `stringers` the mast step sits on. The forward and aft
> > stringers,which the step is bolted to, are bulging. Tapping on them
> reveals
> > a delamination inside.
> > I am thinking this is caused by forces from the adjustable mast crushing
> > the laminate wood inside. The bay this is in is too high to be caused by
> > water intrusion.
> > Anyone else experiencing this?
> > The plan is to drill holes and inject epoxy, then bolt on a suupport
> piece
> > of 1/2" aluminum across the face, bolted into the solid parts of the
> > stringer.
> > Any input is welcome.
> >
> > S/V La Neige
> > 1993 C 37/40 XL
> > Havre de Grace , MD
> > FB blog : thenext14years
> > Brian and Manon
> >
> > ___
> >
> > 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
> >
> >
> >
> -- next part ------
> An HTML attachment was scrubbed...
> URL: <http://cnc-list.com/pipermail/cnc-list_cnc-list.
> com/attachments/20180411/f086594e/attachment-0001.html>
>
> --
>
> Message: 5
> Date: Wed, 11 Apr 2018 09:20:27 -0300
> From: Ken Heaton <kenhea...@gmail.com>
> To: cnc-list <cnc-list@cnc-list.com>
> Subject: Re: Stus-List Mast step stringers
> Message-ID:
> <CAAbfP6TpLoKmqxxSubHrhWFnWRYdPGws7Ws9pevyadBLR06CeA@mail.
> gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Part 2
>
> Hi Brian,
>
> The  'stringers' you refer to are the Structural Floors I think.  Those
> drawings can be downloaded from the links provided.  They are big, about 3'
> by 4' so it is best to download them and view them in a pdf viewer that
> will let you zoom way in.
>
> There is a detail on those drawings as follows:
>
> STRUCTURAL FLOORS
> 1. 2 LAYERS KEVLAR HYBRID
> 2. 1 LAYER KEVLAR HYBRID ON TOP ONLY
> 3. 3 LAYERS OF 18oz./1oz. FABMAT
>
> Here is a link to that detail from the Construction Drawing:
> https://3.bp.blogspot.com/-ZlxOeqGWYe0/Ws39SyZcQGI/AAAB1fc/
> 0fUCvVSqzqYEHiiwFZ67HeLvKyk0Lsr1gCLcBGAs/s1600/Construction%
> 2BDetail%2Bfor%2Bthe%2B37%252B%2BMay%2B28%252C%2B1988-1.jpg
>
> Ken H.
>
>
>
___

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

Re: Stus-List Mast step stringers

[bwhitmore via CnC-List]

Very helpful, Ken!
Thank you very much,
Bruce Whitmore 


Sent from my Verizon, Samsung Galaxy smartphone
 Original message From: Ken Heaton via CnC-List 
<cnc-list@cnc-list.com> Date: 4/11/18  5:20 AM  (GMT-08:00) To: cnc-list 
<cnc-list@cnc-list.com> Cc: Ken Heaton <kenhea...@gmail.com> Subject: Re: 
Stus-List Mast step stringers 
Part 2
Hi Brian,
The 

'stringers' you refer to are the Structural Floors I think.  Those drawings can 
be downloaded from the links provided.  They are big, about 3' by 4' so it is 
best to download them and view them in a pdf viewer that will let you zoom way 
in.
There is a detail on those drawings as follows:
STRUCTURAL FLOORS1. 2 LAYERS KEVLAR HYBRID2. 1 LAYER KEVLAR HYBRID ON TOP 
ONLY3. 3 LAYERS OF 18oz./1oz. FABMAT
Here is a link to that detail from the Construction Drawing: 
https://3.bp.blogspot.com/-ZlxOeqGWYe0/Ws39SyZcQGI/AAAB1fc/0fUCvVSqzqYEHiiwFZ67HeLvKyk0Lsr1gCLcBGAs/s1600/Construction%2BDetail%2Bfor%2Bthe%2B37%252B%2BMay%2B28%252C%2B1988-1.jpg
Ken H.
On 11 April 2018 at 06:27, Ken Heaton <kenhea...@gmail.com> wrote:
Hello Brian,
I would be very surprised to find there was any wood inside the 'stringers' on 
a C 37/40.  There is no mention of wood used in any part of this boat's 
construction anywhere (except in the sole, in bulkheads and cabinetry) in any 
documents I have see for these hulls.
I was sure the `stringers` were either completely hollow or there was perhaps 
foam inside, but only to hold their shape while they are tabbbed to the hull on 
initial construction.  One `stringer` just aft of the two that support the mast 
step, has a large hole drilled in the top to access a keel bolt.  It is 
completely hollow.

Here is a link to the construction drawing for that hull:
Here: 
https://drive.google.com/file/d/0B7X4Y5iVFYAKYTJxRDJBc3BvLWM/view?usp=sharing
and here: 
https://drive.google.com/file/d/0B7X4Y5iVFYAKcDd4ZlhWNGZzdmM/view?usp=sharing
Ken H.


On 10 April 2018 at 22:37, Brian Fry via CnC-List <cnc-list@cnc-list.com> wrote:
1993 37/40. Redoing the rod rigging, mast is down. Removed the aluminum mast 
step to media blast and powder coat. There are three `stringers` the mast step 
sits on. The forward and aft stringers,which the step is bolted to, are 
bulging. Tapping on them reveals a delamination inside.I am thinking this is 
caused by forces from the adjustable mast crushing the laminate wood inside. 
The bay this is in is too high to be caused by water intrusion.Anyone else 
experiencing this? The plan is to drill holes and inject epoxy, then bolt on a 
suupport piece of 1/2" aluminum across the face, bolted into the solid parts of 
the stringer. Any input is welcome.
S/V La Neige
1993 C 37/40 XL
Havre de Grace , MD
FB blog : thenext14years
Brian and Manon

___



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

Re: Stus-List Mast step stringers

[Ken Heaton via CnC-List]

Part 2

Hi Brian,

The  'stringers' you refer to are the Structural Floors I think.  Those
drawings can be downloaded from the links provided.  They are big, about 3'
by 4' so it is best to download them and view them in a pdf viewer that
will let you zoom way in.

There is a detail on those drawings as follows:

STRUCTURAL FLOORS
1. 2 LAYERS KEVLAR HYBRID
2. 1 LAYER KEVLAR HYBRID ON TOP ONLY
3. 3 LAYERS OF 18oz./1oz. FABMAT

Here is a link to that detail from the Construction Drawing:
https://3.bp.blogspot.com/-ZlxOeqGWYe0/Ws39SyZcQGI/AAAB1fc/0fUCvVSqzqYEHiiwFZ67HeLvKyk0Lsr1gCLcBGAs/s1600/Construction%2BDetail%2Bfor%2Bthe%2B37%252B%2BMay%2B28%252C%2B1988-1.jpg

Ken H.

On 11 April 2018 at 06:27, Ken Heaton  wrote:

> Hello Brian,
>
> I would be very surprised to find there was any wood inside the
> 'stringers' on a C 37/40.  There is no mention of wood used in any part
> of this boat's construction anywhere (except in the sole, in bulkheads and
> cabinetry) in any documents I have see for these hulls.
>
> I was sure the `stringers` were either completely hollow or there was
> perhaps foam inside, but only to hold their shape while they are tabbbed to
> the hull on initial construction.  One `stringer` just aft of the two
> that support the mast step, has a large hole drilled in the top to access
> a keel bolt.  It is completely hollow.
>
>
> Here is a link to the construction drawing for that hull:
>
> Here: https://drive.google.com/file/d/0B7X4Y5iVFYAKYTJxRDJBc
> 3BvLWM/view?usp=sharing
>
> and here: https://drive.google.com/file/d/0B7X4Y5iVFYAKcDd4ZlhWN
> GZzdmM/view?usp=sharing
>
> Ken H.
>
>
>
> On 10 April 2018 at 22:37, Brian Fry via CnC-List 
> wrote:
>
>> 1993 37/40.
>> Redoing the rod rigging, mast is down. Removed the aluminum mast step to
>> media blast and powder coat.
>> There are three `stringers` the mast step sits on. The forward and aft
>> stringers,which the step is bolted to, are bulging. Tapping on them reveals
>> a delamination inside.
>> I am thinking this is caused by forces from the adjustable mast crushing
>> the laminate wood inside. The bay this is in is too high to be caused by
>> water intrusion.
>> Anyone else experiencing this?
>> The plan is to drill holes and inject epoxy, then bolt on a suupport
>> piece of 1/2" aluminum across the face, bolted into the solid parts of the
>> stringer.
>> Any input is welcome.
>>
>> S/V La Neige
>> 1993 C 37/40 XL
>> Havre de Grace , MD
>> FB blog : thenext14years
>> Brian and Manon
>>
>> ___
>>
>> 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

Re: Stus-List Mast step stringers

[Ken Heaton via CnC-List]

Hello Brian,

I would be very surprised to find there was any wood inside the 'stringers'
on a C 37/40.  There is no mention of wood used in any part of this
boat's construction anywhere (except in the sole, in bulkheads and
cabinetry) in any documents I have see for these hulls.

I was sure the `stringers` were either completely hollow or there was
perhaps foam inside, but only to hold their shape while they are tabbbed to
the hull on initial construction.  One `stringer` just aft of the two that
support the mast step, has a large hole drilled in the top to access a keel
bolt.  It is completely hollow.


Here is a link to the construction drawing for that hull:

Here: https://drive.google.com/file/d/0B7X4Y5iVFYAKYTJxRDJBc3BvLWM/
view?usp=sharing

and here: https://drive.google.com/file/d/0B7X4Y5iVFYAKcDd4ZlhWNGZzdmM/
view?usp=sharing

Ken H.



On 10 April 2018 at 22:37, Brian Fry via CnC-List 
wrote:

> 1993 37/40.
> Redoing the rod rigging, mast is down. Removed the aluminum mast step to
> media blast and powder coat.
> There are three `stringers` the mast step sits on. The forward and aft
> stringers,which the step is bolted to, are bulging. Tapping on them reveals
> a delamination inside.
> I am thinking this is caused by forces from the adjustable mast crushing
> the laminate wood inside. The bay this is in is too high to be caused by
> water intrusion.
> Anyone else experiencing this?
> The plan is to drill holes and inject epoxy, then bolt on a suupport piece
> of 1/2" aluminum across the face, bolted into the solid parts of the
> stringer.
> Any input is welcome.
>
> S/V La Neige
> 1993 C 37/40 XL
> Havre de Grace , MD
> FB blog : thenext14years
> Brian and Manon
>
> ___
>
> 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