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Author Topic:   Several questions about changing seats :newbie
podangus posted 07-19-2001 02:15 PM ET (US)   Profile for podangus   Send Email to podangus  
Hi everyone,
I want to change the seats in my boat (17 foot Arima) from sleeper seats to 2 pedestal seats.

There are 8 screws that hold each sleeper seat to the floor. The pedestal seats would require different mounting points.
I am not too keen on putting any more holes in the deck --- or filling in the ones already there unless I have to.

My brother said he could get a stainless steel plate (he has a machine shop), mount it to the deck in the screw holes from the sleeper seats, then mount the pedestal to the SS plate.

Any comments?

Also, if the plate option works -- how would you install it? Would we use marine adhesive to stick the plate to the deck, use the eight screws, then finish off with silicone on the outer edge of the plate?

If this is a good way to do it, what marine adhesive would you use?

Any other ideas?

Bigshot posted 07-19-2001 02:31 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Plate is a good idea since you have access to it. Screw it to th eold holes(wood is there)and then seal with a 3m 5200 or 4200 adhesive. You would have a hard time mounting the pedastals without that plate depending on material under floor. Those pedastals will rip right out if there is no kind of backing. The SS plate will be that backing.
podangus posted 07-20-2001 01:26 AM ET (US)     Profile for podangus  Send Email to podangus     
What do you mean seal with 3M adhesive?
Should I put a layer of it between the deck and the plate? Just a bead around the perimetrer of the plate to hold it to the deck? Just in the screw holes?

Oh, the floor is 1/4 inch fiberglass then 1/2 inch plywood then another 1/4 inch fiberglass. I am using the plate so I can use the original holes --- I don't want to put too many holes in the deck, the next owner may want to use those sleeper seats anyway, so I thought best not to fill them in.

Whalerdan posted 07-20-2001 08:22 AM ET (US)     Profile for Whalerdan  Send Email to Whalerdan     
A big SS plate is going to weight quite a bit.
Dan posted 07-20-2001 09:22 AM ET (US)     Profile for Dan  Send Email to Dan     
Personally, I wouldn't want to mount a pedestal seat to the deck unless there was an aluminum backing plate below the deck that I could attach thru bolts to. I think there would be too much stress.
triblet posted 07-20-2001 10:29 AM ET (US)     Profile for triblet  Send Email to triblet     
If you use 4200 or esp. 5200, the next owner
is going to have a hell of a time getting the
plate off to put the sleeper seats back.

And if you bolt down the plate, be sure to
stick some sealant in the screw holes and on
the screws. If you use 4200 or 5200, you'll
have trouble getting the screws back out. I'd use 101 sealant -- that's what it's made


Bigshot posted 07-23-2001 11:23 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
4200 or some silicon type around perimeter. I think your biggest problem will be the bolting of the pedastal to the plate.

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