Dave, I haven't done exactly what you describe but have done similar work. If it was me, I'd fill the old holes with thickened epoxy and go with the #12 fasteners.
You didn't say if the new bolt pattern completely or partially overlaid the A&H hatch. If it matches, overbore and fill. In fact, if you overbored and filled regardless you'd probably end up with a strong bond. My thinking is that the deck is only 1/4-3/8 inch or so. So the fastener is only grabbing that much. If you overbore carefully down to the top of the headliner and fill with thickened epoxy, you'll have a plug that is thicker than the original deck. More material for the fastener to grab. Measure the depth of the hole before you fill so you'll have a good idea of what length fastener to use. Dennis C. Touche' 35-1 #83 Mandeville, LA On Tue, Sep 26, 2017 at 4:17 PM, Dave Godwin via CnC-List < cnc-list@cnc-list.com> wrote: > So I’m crowd-sourcing this question that I have. Always good ideas and > experiences here. > > I purchased a Lewmar Ocean Hatch 60 (shout-out to Fred Street) last year > and am now getting ready to install it as a replacement for the > Atkins-Hoyle hatch that I buggered up removing it prior to painting the > decks. The original hatch used what are I believe (threw away all the > originals like a dope…) #14 stainless steel sheet metal screws screwed into > the deck. No through-bolting. Twenty of those and butyl. Worked pretty well > for 30-plus years > > The new Lewmar specifies through-bolting the frame, using #12 machine > screws and nuts. Let’s just say that I am really reluctant to run bolts > through my overhead and having to stare at them when lying and looking > upwards in the v-berth. > > So, what have those who have replaced their original hatches done? > > Best, > Dave Godwin > 1982 C&C 37 - Ronin > Reedville - Chesapeake Bay > Ronin’s Overdue Refit <http://roninrebuild.blogspot.com/> > > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > wish to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated! > >
_______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
