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&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&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&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.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/AAAAAAAB1fc/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 > >
_______________________________________________ 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
