Seat Building Question

The Main Sand Box for bertram31.com

Moderators: CaptPatrick, mike ohlstein, Bruce

Post Reply
User avatar
Joseph Fikentscher
Senior Member
Posts: 610
Joined: Jun 29th, '06, 07:36
Location: Southport, NC
Contact:

Seat Building Question

Post by Joseph Fikentscher »

I need to make new cabin seating in the B25. I want to do bench seating on both sides. the areas under the bench will house the batteries and other storage such as a cooler and life preservers. The old seating just didn't work for my needs. Also removing the lower station.

How heavy should I go with the plywood? It will be covered on the outside with formica and trimmed. Do I need to go with 3/4" or will 1/2" work?
Sea Hunt Triton 207, a step down, but having fun till my next Bertram!

[url]https://www.instagram.com/endurance_ber ... hl=en/[url]
User avatar
Bertramp
Senior Member
Posts: 1430
Joined: Jan 2nd, '09, 14:57
Location: Sag Harbor, NY Fort Lauderdale, FL
Contact:

Re: Seat Building Question

Post by Bertramp »

If your a$$ were as fat as mine, you would not be asking this question !! :-)
1970 Bertram Bahia Mar - hull# 316-1003
1973 Bertram 38 (widebody) - hull# BER005960473
Steve "Bertramp" Kelly
User avatar
Joseph Fikentscher
Senior Member
Posts: 610
Joined: Jun 29th, '06, 07:36
Location: Southport, NC
Contact:

Re: Seat Building Question

Post by Joseph Fikentscher »

Good one Bertramp !!

Yes, I need to have some strength for other members of my family. Not mentioning names. A guy has to be careful with his future.

Regards,

Joe
Sea Hunt Triton 207, a step down, but having fun till my next Bertram!

[url]https://www.instagram.com/endurance_ber ... hl=en/[url]
User avatar
CamB25
Senior Member
Posts: 1100
Joined: Nov 10th, '10, 08:11
Location: Wilmington, NC

Re: Seat Building Question

Post by CamB25 »

A couple of thoughts/opinions:
- I find that 3 ply, 1/2" plywood is a real pain to work with. Wavy and unstable unless you use 5,7, or high ply material. For fir plywood use 3/4", but you will pay a weight penalty.
- Formica both inside and outside will stiffen the plywood substantially and you could use 1/2" for the box structure saving weight. A couple layers of fiberglass would also work well.
- I have used smooth FRP panels for inner surfaces of the bow seat boxes, transom module, and my fuel covers (molded). Easy to cut and bend (heat gun), and will bond well with epoxy. Boat life caulk the seams and it's a quick way to a "finished" interior surface. They can be painted as well.
http://www.cranecomposites.com/BP/sequentia.html
-After using almost every material available on my project over the years, I've come to the conclusion that using Coosa saves so much time, effort, and weight that it more than offsets the higher up front cost of the material. If I were making bench boxes I would use Coosa for the structural elements.

My latest Coosa creation (thought there is a little plywood because I ran out of Coosa):

Image

Cam
1963 Bertram 25
1973 Boston Whaler 13 - sold!
1998 Scout 172 SF - beach taxi
Yannis
Senior Member
Posts: 3050
Joined: Oct 23rd, '13, 09:41
Location: Athens, Greece

Re: Seat Building Question

Post by Yannis »

Joe,

Are you sure you want to put the batteries that far forward?

First because of the weight and second because of the banging punishment they'll get out there.
1973 B28 FBC/2007 4LHA STP's - "Phantom Duck" - Hull "BER 00794 1172"
Tony Meola
Senior Member
Posts: 7009
Joined: Jun 29th, '06, 21:24
Location: Hillsdale, New Jersey
Contact:

Re: Seat Building Question

Post by Tony Meola »

Bertramp wrote:If your a$$ were as fat as mine, you would not be asking this question !! :-)
Now that is too funny.
1975 FBC BERG1467-315
Yannis
Senior Member
Posts: 3050
Joined: Oct 23rd, '13, 09:41
Location: Athens, Greece

Re: Seat Building Question

Post by Yannis »

Cam,

Two seats plus two storage spaces underneath, plus the outboard mounting space, plus the bait well ALL in one, man what do you guys drink?
1973 B28 FBC/2007 4LHA STP's - "Phantom Duck" - Hull "BER 00794 1172"
User avatar
CamB25
Senior Member
Posts: 1100
Joined: Nov 10th, '10, 08:11
Location: Wilmington, NC

Re: Seat Building Question

Post by CamB25 »

As the song says,"One bourbon, one scotch, and one beer!"
1963 Bertram 25
1973 Boston Whaler 13 - sold!
1998 Scout 172 SF - beach taxi
User avatar
Joseph Fikentscher
Senior Member
Posts: 610
Joined: Jun 29th, '06, 07:36
Location: Southport, NC
Contact:

Re: Seat Building Question

Post by Joseph Fikentscher »

Cam,

After taking out the original seating, it looks like Bertram used 1/2". Maybe i'll use 3/4 for the front face of the bench and 1/2 for the shorter pieces.

Yannis,

the batteries would be at the aft end of the seat and probably about 1' in front of the engine (Vdrives). The seats will extend almost as far back as the bait tank n the picture below.
Image
Image
Sea Hunt Triton 207, a step down, but having fun till my next Bertram!

[url]https://www.instagram.com/endurance_ber ... hl=en/[url]
Tony Meola
Senior Member
Posts: 7009
Joined: Jun 29th, '06, 21:24
Location: Hillsdale, New Jersey
Contact:

Re: Seat Building Question

Post by Tony Meola »

Joel

Where do you keep her? That looks like you are on Tom's River from the picture.
1975 FBC BERG1467-315
User avatar
Joseph Fikentscher
Senior Member
Posts: 610
Joined: Jun 29th, '06, 07:36
Location: Southport, NC
Contact:

Re: Seat Building Question

Post by Joseph Fikentscher »

Tony,

I keep her at the Manasquan River Club in the summer. Just up the street from Marine Max and the River Rock Bar.
Image

In the winter she is next to my house in Wall. Basically on the other side of the river. 5 minutes to the slip.
Image
Sea Hunt Triton 207, a step down, but having fun till my next Bertram!

[url]https://www.instagram.com/endurance_ber ... hl=en/[url]
User avatar
John F.
Senior Member
Posts: 2105
Joined: Jun 29th, '06, 07:58

Re: Seat Building Question

Post by John F. »

In redoing the interior of my B31, I've used 1/2" ply for all the vertical pieces. The dinette seats are made out of 1/2", but the horizontal seat tops are 1/2" with another piece of 1/2" serving as the backing to the upholstered piece--so it's almost like 1". I'm building a really wide bench seat for my starboard side. I don't intend on having the cushions built with any plywood (just foam), so I'll probably use 3/4" ply for the seat top so that it doesn't flex.
1968 B20 Moppie - Hull # 201-937
1969 B31 FBC - Hull # 315-881 (sold)
1977 B31 FBC - Hull # BERG1652M77J
Yannis
Senior Member
Posts: 3050
Joined: Oct 23rd, '13, 09:41
Location: Athens, Greece

Re: Seat Building Question

Post by Yannis »

Image
Image
If you plan to glass them, then even 1/2" is too much for verticals.

For horizontal surfaces, I chose 2cm (which is less than 1") and I can assure you it's rock solid.
1973 B28 FBC/2007 4LHA STP's - "Phantom Duck" - Hull "BER 00794 1172"
Post Reply

Who is online

Users browsing this forum: Bing [Bot], Google [Bot] and 37 guests