Hardboard Replacement For Seat Bottom Support

[RJD]

Just throwing this out there in case anyone needs a new seat bottom support material recommendation.

While doing some carpeting work in the cockpit, I discovered that the hardboard seat bottom supports for my Breeze seat kit gave out. Looking for a replacement material that was firm yet flexible, I found a sheet of ABS plastic 3/16 x 24 x 24 - enough for both seats for about $20 delivered on Amazon.

Using the old hardboard as a model, I cut the ABS to size and drilled the holes. Installed, they seem to meet the objective of giving firm but flexible support at the forward edge of the seat, but I've yet to go on a lengthy cruise.


Anyone else use other material with good results?

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[GoDadGo]

Just throwing this out there in case anyone needs a new seat bottom support material recommendation.

While doing some carpeting work in the cockpit, I discovered that the hardboard seat bottom supports for my Breeze seat kit gave out. Looking for a replacement material that was firm yet flexible, I found a sheet of ABS plastic 3/16 x 24 x 24 - enough for both seats for about $20 delivered on Amazon.

Using the old hardboard as a model, I cut the ABS to size and drilled the holes. Installed, they seem to meet the objective of giving firm but flexible support at the forward edge of the seat, but I've yet to go on a lengthy cruise.


Anyone else use other material with good results?

127548

127549

127550

I used 3/8" plywood and added 1.0" layer of low density foam on top and a 1/2" layer of high density foam under the bottom.
I cut the plywood to match the seat bottom and upholstered it (Fancy Word For Stapled) so now the seat bottoms really keeps their shape.
The additional low density and high density foam sandwich the original pad so I've got more cush for my tush so they are now way more comfortable too.

[frankb]

Ditto what Go Dad said! I too used 3/8" plywood shaped to the bottom of the foam and stapled the cover to it. The seat bottoms keep their shape much better, but it adds a bit of height to your seated position.

[GTBradley]

Good idea using the ABS. I went the route of plywood treated with a water repellent. The fiber board just doesn’t work.

[R. Button]

you sure that the board is in right? My board is the reverse of that and fastened to the rear most metal brace. The front of the board it just at the front brace and is fastened to the third from the front brace.
I'm using the predrilled holes too and they match up to the steel braces if you use the rear and front steel braces (bars).

After work to night I'll post a picture. As on mine there is no front over hang to break off.

[GTBradley]

Ralph, that is part of the Breeze kit, it gives a little more support to the thighs when it overhangs the front of the seat frame. It also puts too much stress on a fiberboard.

[R. Button]

I have the breeze kit also. Just making sure if I have it all wrong. The Breeze board fits perfectly to the existing braces on the metal frame if I slide the board back to the rear brace and no front over hang.

[Papa]

My understanding is that the board is supposed to support the front edge of the seat to keep it from rolling over with the elevated seat mount. I like the ABS or plexiglass idea.

[GTBradley]

I have the breeze kit also. Just making sure if I have it all wrong. The Breeze board fits perfectly to the existing braces on the metal frame if I slide the board back to the rear brace and no front over hang.
You can use it that way, but if you move it forward one cross bar and drill holes there, you will get the overhang. Just don’t bother if you’re going to use the fiberboard. I find it more comfortable, but we’ll see if the plywood lasts. I got some better plywood that doesn’t crack very easily, but time will tell. Like Dave said, it’s for the brackets that make the seat angled back, which I find much more comfortable.