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First Fish Cat float tube
#5
Hi, MB:

Hope my comments in your message below are of some help.

Pon

[quote MotoBoat]Thanks for attaching those photo's tubedude. I came across those very pictures, as well as one of a Outcast air bladder seat and seat back. As well as a H3? seat bladder and seat back bladder. While searching the site for any help I could find before posting the problem I am having. Seeing your pictures, and the Outcast youtube video showing the correct seat foam orientation and tight fit.

Here is the deal. The seat foam will only go in tightly, if placed in the "wrong" orientation. As mentioned, there is not need for lubrication when installing in the "correct" orientation. The seat foam will literally fall in and out.

PON: That seems too loose, for whatever reason. You will need to take up some space, maybe with shims is the easiest way.

I have located boogie board that is consistently 1" thick throughout the length and width. My thought is to cut a piece 1" thick x 4 3/8" wide x 19 3/8" long. Sandwich the seat foam between one boogie board shim piece on each side. My thought is, the boogie board is closed cell foam, and about the same compression rate, and the thickness should allow for 3/4" of pontoon bladder compression, as they fill and press against the boogie board foam. The 3/4" of extra width comes from: 17 3/4" seat foam width + two 1" boogie board shims = 19 3/4" inside the 19" seat pocket.

PON: Should work, unless the boogie board is rigid foam with no give maybe will crack?

For the seat "taco" I considered a plastic cutting board, plexiglass, or plywood. The cutting board, and plywood are easily accessible.

First the cutting board. Picking the largest one at the store ( 1/2" thick x 14"W x 20"L). Placing the center, width wise across a sharp object, and pressing down. Takes very little effort to deflect the ends several inches. Plastic cutting board is out.

Assuming plexiglass would act similarly, and not being readily available, I have not followed through with that.

Next I took a 1/2" x 19" x 20" piece of plywood. I set each edge so it overlapped a chair on each side be 3/4" or less. Nothing but air space under the ply. Sitting down carefully, with a yard stick in one hand. I first measured the suspended ply before loading with body weight. Then after sitting on the ply. 3/4 of deflection in one direction, and 3/8" inches if turned 90 degrees. I new plywood was stronger if spanned width wise over roof or floor joist, than if spanned length wise. But when a small piece is cut from a whole sheet. There is no way to tell width from length. By sitting on the ply, then turning 90 degree, revealed the direction that was strongest, and the width of the sheet of ply it was cut from.

PON: Plywood is not the best thing, it swells when wet and takes a long time to dry out. The surface will become rough with some possible splinters from going through the wet/dry cycles unless sealer applied. Also the glue will slowly dissolve over a long period of time unless it is sealed periodically. Marine ply will hold up longer, but I would go with cutting board or boogie, or a plastic patio chair with the legs cut off and placed on top a la TD,(comfort wise).

I was hoping a fish cat owner of a older model would chime in with there seat foam width and length measurements.

Is the 'taco effect different if sitting in the seat on land vs on water?

PON: YES, when you sit in water the foam will push up along the entire length of the support board, so the entire board surface has an upward force. You are testing in air, where most of the force is only at the CENTER of the board, so it deflects.

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Messages In This Thread
First Fish Cat float tube - by MotoBoat - 04-14-2014, 08:21 PM
Re: [MotoBoat] First Fish Cat float tube - by pontoonman - 04-15-2014, 12:26 PM
Re: [MotoBoat] First Fish Cat float tube - by pa - 04-17-2014, 08:36 PM

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