I have owned my LF 38 for over 30 years now. I have done the Plexus repair twice--so, I have been through 3 sets of windows (if you include the originals) within probably the first 20 years. Because of my frustration with Plexus, I designed and built stainless steel frames for my boat, using 3/8-inch thick cast acrylic, and a flexible GE sealant, and they have lasted about 10 years without any leakage whatsoever. I did not try SIKA but I know it is a good product (have used it elsewhere) and I expect that it would work fine too. I think the Plexus is simply too rigid for a flexing boat like our C&C's--I would like to see how anyone can get any flexibility out of it. (Perhaps each of our boats have different flexibilities--so, I am speaking of my LF38).
I agree that Lexan would scratch easier than polycarbonate. I read Don Casey's article and I have to wonder if he really knows what he is doing...or if he is talking about smaller windows in other boats. Bob On Oct 21, 2015, at 1:45 PM, Gary Russell via CnC-List wrote: > Hi Paul, > I agree that 1/4" is too thin. The other 37+ at my club has 5/16" It > amazes me that people with no marine design experience would change the > design. I plan to go with 3/8" acrylic. But then again... > > The problem with Lexan (which is a polycarbonate) is that it is less > scratch resistant than Plexiglas (acrylic). You are probably trading one > problem for another. > > As for Plexus vs Silka 295, I am really torn. The write-up in the Photo > Album suggest that Plexus will be flexible enough if (big if) the bond > thickness is large enough. To that end he added glass beads to the adhesive > to make sure the bond thickness didn't get thinner than 0.030". > > Thoughts, anyone? > > Gary > S/V High Maintenance > '90 C&C 37 Plus > East Greenwich, RI, USA > > ~~~~~~~_/)~~~~~~ > > > On Wed, Oct 21, 2015 at 10:56 AM, Dreuge via CnC-List <cnc-list@cnc-list.com> > wrote: > Gary, > > I am surprised that you have 1/4” acrylic. To have the strength acrylic > should be more like 3/8”. > > Are you sure you don’t have 1/4” polycarbonate? > > I recently replaced all of the fixed ports on my LF38 using 1/4” Makrolon > (abrasion & UV resistance polycarbonate), 3M VHB tape, and Dow 795. > > I have pictures and a discussion of the process at: > http://svjohannarose.blogspot.com/search/label/NewPorts > > Paul > > - > Paul E. > 1981 C&C 38 Landfall > S/V Johanna Rose > Carrabelle, FL > > http://svjohannarose.blogspot.com/ > >> On Oct 21, 2015, at 8:08 AM, cnc-list-requ...@cnc-list.com wrote: >> >> Date: Tue, 20 Oct 2015 21:16:09 -0400 >> From: Gary Russell <captnga...@gmail.com> >> To: "C&C List" <cnc-list@cnc-list.com> >> Subject: Stus-List Replacing Windows >> Message-ID: >> <cabgkxplqhqnkcdzd0eqskekj9xbe5_g9zo1zwv128v9sdqq...@mail.gmail.com> >> Content-Type: text/plain; charset="utf-8" >> >> I am starting the process of replacing the side windows on High Maintenance >> (1990 C&C 37 Plus). The windows have been replaced before (not original) >> and are currently 1/4" acrylic. Is that the right thickness? I've seen in >> some places references to 3/8" windows. So were the original windows 1/4" >> or 3/8"? >> >> Thanks, >> Gary >> s/V High Maintenance >> '90 C&C 37 Plus >> East Greenwich, RI, USA > > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the bottom > of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the bottom > of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > Bob Boyer S/V Rainy Days (1983 C&C Landfall 38 - Hull #230) email: dainyr...@icloud.com blog: dainyrays.blogspot.com "There is nothing--absolutely nothing--half so much worth doing as simply messing about in boats." --Kenneth Grahame
_______________________________________________ Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
