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  Question.....deck mounting.

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Author Topic:   Question.....deck mounting.
stinkyB posted 01-18-2002 10:25 AM ET (US)   Profile for stinkyB   Send Email to stinkyB  
No not that kind......
I've been fixing up my '65 17' whaler w/ an aftermarket center console, and someone gave me some nice pedestal seats for the boat. Due to the structure of the boat (foam), I was planning on inserting dowels into the deck, then glassing over them, to serve as a solid anchor to drill into to support the seats. Do you think that 1 1/4" D is big enough, and what length (depth) should they be?
Also, looking to save space in the stern; do you think I can keep the battery in the console, or is it better in the rear?
Much Thanks.
stinkyB posted 01-18-2002 10:26 AM ET (US)     Profile for stinkyB  Send Email to stinkyB     
One more.... what's the beam for a 17ft montauk? thanks
JBCornwell posted 01-18-2002 11:20 AM ET (US)     Profile for JBCornwell  Send Email to JBCornwell     
Ahoy, Stinky. Go to the tech section on the 17' hull and download the diagram that shows the wood under the deck. I think it is 1/2" plywood. That should be plenty of anchor.

If you want to put them somewhere else, don't use dowels, use plugs cut cross-grain, at least 1/2" dia and about 3/4" long.

Red sky at night. . .
JB :)

Chesapeake posted 01-18-2002 11:25 AM ET (US)     Profile for Chesapeake  Send Email to Chesapeake     
Boy Stinky, I don't know about the integrity of that kind of fix. If it were my boat, I would be concerned that significant torque / force (let's say someone standing up falling into the chair, or sitting down awkwardly) could rip the dowels right through the deck. I would think you might want more surface area in the backing.

Many people have described building epoxy hockey pucks, under the figerglass skin, to act as a stable mounting block. It works well. I just don't know if I would trust it for a seat.

BW

Taylor posted 01-18-2002 01:15 PM ET (US)     Profile for Taylor  Send Email to Taylor     
Beam on my 1988 measured 75". Reference section says 6' 2" so I might have been leaving a little allowance.
JohnAz posted 01-18-2002 01:16 PM ET (US)     Profile for JohnAz  Send Email to JohnAz     
What ever size plug or block you use save the deck piece you remove (hole saw), then use that piece for your final top on plug, and finish with matching Marine Tex
stinkyB posted 01-18-2002 01:30 PM ET (US)     Profile for stinkyB  Send Email to stinkyB     
Thanks for the input guys.
I like the idea of saving the top piece.

Here's my dilema:
I've been fixing up a 17ft '65, that I got for a good price. It's my 1st boat. (I'm stoked) It has an aftermarket centerconsole (from a hydra skiff) it's a little large, but that's good as it will provide storage, but has no seat. I've fixed all the soft spots in the & repainted the deck. It already looks a 1000 times better. I was planning on getting a cooler seat, but someone gave me these nice pedestal chairs. They're nice for fishing & cruising and FREE. Cost is a large factor in fixing this boat, so I'm trying to figure out a way to securely mount these pedestal bases to the deck, and the wooden beams underneath aren't enough (maybe for 1 screw per seat)
Thanks

Taylor posted 01-18-2002 01:50 PM ET (US)     Profile for Taylor  Send Email to Taylor     
What about some sort of mounting plate between the bases and the deck to spread the load?
stinkyB posted 01-18-2002 02:50 PM ET (US)     Profile for stinkyB  Send Email to stinkyB     
Looking at the plans I've downloaded, that's a pretty good idea. I could mount the seats to a strip of wood, then drill the wood into the beams in the boat (parts B & C). The 3 strips would probably provide plenty of support.
Question is: where exactly are these located? The dimension of the wood is indicated, but not the position from the sides or center of the boat.
Taylor posted 01-18-2002 03:16 PM ET (US)     Profile for Taylor  Send Email to Taylor     
"beams' are not what those are. They are 1/2 plywood, more like backing strips. You might be able to find them with an electronic stud sensor though.
lhg posted 01-18-2002 03:57 PM ET (US)     Profile for lhg    
In the blue hulled interiors, the plywood securing strips were placed to line up under the edges of the mahogany console and pilot seat, where those items were screwed into the floor. Someone here who has an original Nauset could measure the centerline distance between the screws holding down the seat, for instance, and those dimensions should work for you, combined with the information on the hull layout sheet.

As mentioned, pedestal seats can put a lot of torque on the base, and I'm not sure wood strips spanning 30" or so across the floor, will hold the chairs securely unless they are 2 x 4's!! The front strip will tend to lift up as someone leans back in the chair.

Incidentally, standard procedure when putting screws into the hull where there is wood backing: Only drill a hole thought the glass the diameter of the screw shank (the outside diameter of the threads). Never drill into the plywood. The screw will self-thread into the plywood. The screw should not grip the glass (to avoid chipping it out), only the plywood.

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