Steve — the hull is probably NOT cored in the usual spot for transducers (near centerline, ahead of the keel; usually up under the v-berth or just aft of it). You should be able to drill the hole, slather up the transducer with LifeSeal, stick it in and tighten the nut on the inside, then launch within an hour or two.
I helped a marina buddy put a new tri-ducer in his <gasp!> Hunter last summer, as part of a Raymarine i70 instrument upgrade. We had the marina pull the boat around 11am, then leave it in the Travelift slings while they went to lunch. I pulled the old transducer, installed the new one, and they launched the boat by 1pm. — Fred Fred Street -- Minneapolis S/V Oceanis (1979 C&C Landfall 38) -- on the hard in Bayfield, WI :^( > On May 2, 2016, at 9:25 AM, Della Barba, Joe via CnC-List > <cnc-list@cnc-list.com> wrote: > > Why not the hole the correct size, dig the core out between the inner and > outer glass, fill that space with thickened epoxy, and install the transducer? > A solid glob of hardened epoxy is not even close to being as strong as the > hull. If I were doing it, I would put the epoxy in day 1, mount the > transducer day 2, and launch day 3. > YMMV and I am sure you'll get some more detailed advice soon. > Joe > Coquina > C&C 35 MK I > > > -----Original Message----- > From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Steve > Thomas via CnC-List > Sent: Monday, May 02, 2016 10:18 > To: cnc-list@cnc-list.com > Cc: Steve Thomas > Subject: Stus-List West System cored hull time to cure > > > I am contemplating installing a new transducer in a cored hull, but have only > 2 days till scheduled launch. If I do it, it will be a 2 inch hole, and I > want to do it right. > > The process I have got from the list over the years is in a nutshell,as > follows: > Once the hole is cut, and the core dug out to some range around the hole, you > fill it up again with West System thickened expxy. Then drill it out again > and proceed as with a solid hull. > > How long does the epoxy take to set? > What would be a minimum time to budget for the whole process? > I have never used epoxy other than glue. > > Thanks, > > Steve Thomas > C&C36 > Merritt Island, FL
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