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Glass Bottomed Stripper

Discussion in 'Strippers, Stitch-n-Glue, and Other Wood Composite' started by erbinsky, Jun 24, 2007.

  1. erbinsky

    erbinsky Canoeist/Builder

    I've been playing with the idea of putting 2 small...12" x 14" or so...plexyglass "windows" in the football area of my next stripper,one in front of the rear seat and one behind the front seat that I would cover with some sort of hatch on the inside to prevent scratching.Has anyone ever tried something like this? Does epoxy stick to plexyglass. It would have to be strong enough to support a paddlers weight if he happened to stand on it with the hatch open. It would also have to be slightly lower in the water than the hull...maybe 1/16"... to ensure no air pockets that would distort the veiw. Have I been sniffing too much cedar dust? Any comments would be great....Jeff
     
  2. Mike Heines

    Mike Heines Upstate Canoe Sailor

    Bahamas glass bottom launches

    I've only seen this type of setup in wooden launches in the Bahamas many years ago. The plexiglass was bedded in a double frame, and leaked pretty constantly, so that a large rag was kept nearby to keep the plexiglass clear.
     
  3. woodenkayakguy

    woodenkayakguy LOVES Wooden Canoes

    I had thought of doing something like this on my millcreek stitch and glue kayak but never got around to it( run to many rivers with it)But I have seen a factory built kayak with a plexiglass window right between the paddlers knees but can't remember what make it was
     
  4. woodenkayakguy

    woodenkayakguy LOVES Wooden Canoes

  5. Todd Bradshaw

    Todd Bradshaw Sailmaker

    First of all, use polycarbonate (Lexan) rather than acrylic (Plexiglass). It's much tougher and less likely to fracture from impact, from any possible holes from fasteners or from solvents in the calk attacking it at the edges. You can actually hit a Lexan window with a hammer and it will bounce off. Do not try that with plexiglass.

    I think you're probably going to need some sort of low frame on the inside of the boat, similar to the one shown in the CLC kayak instructions. Any way you do it, it's likely to make a weak spot in the bottom to some extent, but if you stay away from shallow, rocky water it shouldn't be a major problem. I would not use epoxy for attaching the window. 3M 4000 marine calk or maybe 3M 4200 (both removable if ever needed) would be my choice and I'd probably countersink a few small holes and screw it to the frame from the outside of the hull over a generous bead of calk. If the frame and hull edge are well sealed with epoxy when constructed and the calking job is decent, there is no reason that it should leak at all.

    I don't see any reason why the window needs to protrude from the hull. I doubt it will make any difference in visibility and it just exposes it to more potential damage. My Star sailboat had a Lexan window in the bottom, set flush into a frame so that you could see if there were weeds hung-up on the keel and it worked fine and didn't leak. The rag is probably there more for wiping consensation off the inside than for leaks.

    These windows work, but aren't entirely problem-free. In cold water and warm weather you do get condensation at times. You also get a lot of reflected glare off of it if it's out in the open. The difference between what you will be able to see, looking down between your knees from a canoe seat and what you would be able to see if you, for example, were to lie in the bottom of the canoe with a light-blocking hood over your head and over the window is night and day.
     
  6. Canerodz

    Canerodz Trout Bum

    When it gets scratched there are two polishes I know about that will buff them out really well. One is sold for polishing motorcycle helmet face shields and the other is for polishing small airplane windscreens.

    When I worked in a nature center we used them to polish to lexan windows on various displays after the cub scouts had been through. Don't recall the names but the motorcycle helmet stuff was cheaper and worked about as well. Google windscreen polish.
     

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