" 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&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&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 --------------
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>>
>> ------------------------------
>>
>> 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 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/AAAAAAAB1
>> fc/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
>
>
>
_______________________________________________

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