ATC90 Seat Project

[Frankencelery]

I wouldn't have thought a seat replacement would be a project in itself, but it's turning into one. I finally gave in and paid too much for a seat foam and cover combination for my '77 ATC90 fender. (The ATC is a '72 but the fender is '77, so that's what seat it needed). For those who don't know the setup, I'll give a quick rundown: There's not a full seat pan. instead, the original cover had grommets with a piece of twine run through and tied all tight to hold the cover onto the foam. inside the foam, at the rear and on the sides, are pieces of steel with studs poking out of them. Two at the back and two at each side. These went through the fender and were fastened with nuts on the underside and held the seat in place.

Here's my problem-

1. The replacement cover doesn't have the holes or grommets like the OEM did. What have you guys who have replaced an ATC90 seat done? i know there's some way to install grommets in a piece of leather or vinyl, but I have no idea how it's done.

2. The metal pieces that held the seat in disintigrated when i took them out. Same question. What have other people done? I can probably fabricate the side ones, but the back one is is curved and I don't think there's any way I could do that. I haven't found anyone who still makes those pieces.

Any thoughts or ideas would be helpful.

[Frankencelery]

I should add that although I implied that the old seat cover was OEM, I don't believe it was. I think the OEM seat had a design on it, and this one is smooth. I should have said the previous cover!

Another update- I e-mailed the vendor to ask how to fasten this thing and got back a microfiche diagram of the fender assembly. Great, that's useful...

[darrel632]

Frank what I did to fab the mounts is to take flashing aluminum (24 in) cut it to fit the foam,and ensure it doesn't scar the fibreglass, then magic marker your bolt holes on the tin through the body pan, insert your bolts and silicon the threads, then fibreglass the new pan on both sides which should hold your bolts in place, use a really good glue to attach to the foam, replace your oem type cover staple remove the silicon from the threads so the bolt is in good shape and your good to go (I built a full fibreglas pan under the seat, and used foam on the edges to keep it from abrading between the seat and seat pan and stapled the whole thing down) not oem but it looks really good, similar to a 110 seat just fits better

[Frankencelery]

Wow, you're ambitious! Sounds like you REALLY made a project out of it.

[Frankencelery]

If anyone cares, I found out some more information. The vendor finally gave me some info on how these things were installed from the factory. The grommets I had in my old cover were a neat idea, but they were NOT OEM. This was also an aftermarket cover. They used the grommets to tie the seat cover down to the foam, then the metal pieces hold it all to the fender. He said from the factory, the metal pieces are put between the foam and the cover, with the bolts sticking out through the cover, and then the cover is glued to the foam with 3M weatherstripping adhesive.

I'm not sure if this is what I'm going to do, but it explains the situation.