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Old 22-07-2022, 20:02   #1
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How strong is the bulkhead between my V-berth and head?

I am trying to mount a TV on the wall in the V birth on moody 425. I am wanting to mount something like this. I am open to other mounts this is just the one I had left over from when we moved out of our house. The mirror in the head is right on the other side of the wall so my plan was to run a couple of bolts through from that side (so they are flush behind the mirror). I would imagine this would be more than strong enough but I am pretty new to boat construction so I figured Iíd ask you guys first.

https://www.amazon.com/WALI-Monitor-...%2C143&sr=8-21
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Old 22-07-2022, 22:19   #2
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Re: How strong is the bulkhead between my v birth and head?

How long is the lever arm and what is the weight of the TV? It looks long to me, and the weight hanging out at the end will put a lot of force on the two bolts you propose. I'd feel especially concerned in a rambunctious seaway. If there's a way, put a backing plate to spread the loads.

All the boats we've owned have had at least 1/2" thick marine ply bulkheads.

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Old 23-07-2022, 11:57   #3
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Re: How strong is the bulkhead between my V-berth and head?

Is there something other than simple friction to hold the screen and arm closed? You do not want to go over a big powerboat wake and hear the arm extending and the screen hitting the cabintop a couple of times.
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Old 23-07-2022, 12:34   #4
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Re: How strong is the bulkhead between my V-berth and head?

Nuru Just about the coolest craziest TV bracket people and the bang and Olufsen dealership in England. Youíve seen those TVs floating about on strange arms or popping up out of furniture are likely made by STB. Itís a B&O Dealer and mad cyclist who developed a separate company specifically for TVs speakers and other audio. Call or hit their Web site. The bracket your looking for spread the weight down the wall rather than yanks on 3-4 holes.
They make a very cool bracket which hold a toshiba 4K DVD CD fits several Bang and Olufsen TVs and some Samsungís and a universal. Only the CD pops up vertical so itís hidden. A B&O TV is about 6X the weight of a Samsung so STB brackets are amazing.
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Old 24-07-2022, 08:10   #5
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Re: How strong is the bulkhead between my V-berth and head?

Seriously? In the best case it would just snap off in any kind of seaway; worst case it would bang around for a while and do all sorts of damage, and maybe injure somebody. You're asking for trouble with anything but a flush mount.
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Old 24-07-2022, 11:22   #6
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Re: How strong is the bulkhead between my V-berth and head?

How big a TV and why do you want an arm mount?

In our 1985 Catalina 30, we put a 24" 12V TV behind a door on the cabin wall. The mount is screwed into a piece of oak epoxied to the inside of the hull.
Works fine, is secure and out of sight when the door is closed. I ran RG-6 coax to the cockpit where I can connect an antenna (Use our boat hook as an antenna mast). Also put an HDMI connector over the hanging locker where the Apple TV and Blu-Ray play are, so no cables are visible.
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Old 24-07-2022, 11:26   #7
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Re: How strong is the bulkhead between my V-berth and head?

Quote:
Originally Posted by nuru05 View Post
I am trying to mount a TV on the wall in the V birth on moody 425. I am wanting to mount something like this. I am open to other mounts this is just the one I had left over from when we moved out of our house. The mirror in the head is right on the other side of the wall so my plan was to run a couple of bolts through from that side (so they are flush behind the mirror). I would imagine this would be more than strong enough but I am pretty new to boat construction so I figured Iíd ask you guys first.

https://www.amazon.com/WALI-Monitor-...%2C143&sr=8-21
Hey Nuru
I have a 42" Samsung flat screen tv made a backing plate slightly taller than the TV 2 heavy duty hinges at the top and if needed I can secure the tv against the ceiling works great
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Old 24-07-2022, 12:10   #8
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Re: How strong is the bulkhead between my V-berth and head?

Nuru05:

Your problem is not going to be the bulkhead. Round headed machine screws through metal backing plates on each side of 1/2" ply with nuts squeezing it all together so the threaded ends of the bolts become studs will be more than strong enuff to carry the weight of any TV I can think of.

Shim out the mirror to accommodate the bolt heads.

HOWEVER: The "arm" that is part of what you say you intend to use will be far, far from able to carry the weight of even a moderately heavy TV in any kind of weather when the boat rolls and pitches. When alongside or at anchor it may suffice, but if you are going to accept such a restriction you still have to ensure that the TV itself can be secured to the bulkhead itself (taking the weight off the arm) so the arm doesn't have carry the very considerable forces of acceleration and deceleration that will be generated in a seaway.

As MySaintedMother was wont to council me: "Build it so it can take the weight of a well-grown man thrown against it in a seaway!"

All the best

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Old 24-07-2022, 12:16   #9
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Re: How strong is the bulkhead between my V-berth and head?

I don't allow any sleeping or extended lounging in the V-berth while underway, especially at night. As Clint Eastwood would say, "Do you trust your collision bulkhead.... well do ya punk."
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Old 24-07-2022, 12:42   #10
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Re: How strong is the bulkhead between my V-berth and head?

As stated by others, the mount looks good enough if you are on anchor, I would find a way to secure it underway. New TVs are Very light which is good except that the “light” comes from cheap construction, lots of plastic.
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Old 24-07-2022, 13:44   #11
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Re: How strong is the bulkhead between my V-berth and head?

STB make master full linear flush mounts.
It’s more likely a Corian Counter top break loose and go slash about that a couple pounds of TV tearing a linear mount out.
They don’t make stuff full of dumb assumptions. Their stuff doesn’t rust either.
Can’t hurt to ask them.
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