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Old 08-02-2015, 06:08   #16
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Re: Planning for a roll-over

Dont forget about securing the salon floor access panels.
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Old 08-02-2015, 06:14   #17
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Re: Planning for a roll-over

I have wondered about water and diesel tankage too. Interested to see a tank chained on this thread - always weld on or bolt on tabs but whatever works. If one has a diesel or drinking water tank the filler opening should be secured against inversion too - may be issue in some boats.


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Old 08-02-2015, 15:54   #18
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Re: Planning for a roll-over

What is a rabbit hutch disc?
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Old 08-02-2015, 16:15   #19
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Re: Planning for a roll-over

Quote:
Originally Posted by scottthardin View Post
What is a rabbit hutch disc?
I think this is the type of cupboard closure or latch mentioned.
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Old 08-02-2015, 18:07   #20
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Re: Planning for a roll-over

Quote:
Originally Posted by scottthardin View Post
What is a rabbit hutch disc?
Quote:
Originally Posted by Steady Hand View Post
I think this is the type of cupboard closure or latch mentioned.
Does that mean a 'rabbit hutch disc' is a keyless cam latch in grown-up speak?

Al
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Old 08-02-2015, 19:02   #21
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Re: Planning for a roll-over

Ha ha. We all went looking for Ann's suggestion. I was about give up and ask her to elaborate. I had something quite different in mind from the description. Some kind of circular timber disk with a segment missing

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Old 08-02-2015, 19:47   #22
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Re: Planning for a roll-over

[QUOTE=Alan Mighty;1744639]Does that mean a 'rabbit hutch disc' is a keyless cam latch in grown-up speak?

Al[/Q

Hi.

I don't know.

When I read "Rabbit Hutch Disk" I had a type of latch come to mind, and I searched to find what came to my mind and found several examples that look very close to what I have seen on boats.

Perhaps this is because I had rabbits when I was a kid, and they were in a rabbit hutch.

If someone had written: "keyless cam latch" nothing would come to my mind, because I don't associate those words with a device on boats.
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Old 09-02-2015, 00:42   #23
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Re: Planning for a roll-over

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If someone had written: "keyless cam latch" nothing would come to my mind, because I don't associate those words with a device on boats.
From my McMaster-Carr cattle dog:
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Old 09-02-2015, 03:59   #24
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Re: Planning for a roll-over

Quote:
Originally Posted by Alan Mighty View Post
From my McMaster-Carr cattle dog:

Well that certainly looks like it would work nicely, I do hope Ann comes back and explains this one though.

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Old 09-02-2015, 14:36   #25
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Re: Planning for a roll-over

If you have a moment free from walloping, you've got all us bunnies on CF scratching behind our ears trying to work out what the rabbit hutch discs are. Have you a moment to return to the "Planning for a roll-over" thread to illuminate us?

Yup, all finished dock walloping. I have no idea what the "grown up proper name" for what I mean is. I'll try and describe it. My ex made one for my daughter's bunnie's hutch. Sometimes people make something that'll do the job (for rabbit hutch) with a rectangular bit of wood, long and thin.

Cut a disc out of door skin or similar material. You need to either make a flat on it or have the screw hole not in the center, so that one side of your circle is longer than the other. You mount it so that it pushes out of the way on the the frame when you want to open it, but it acts as a stop when so arranged. Generally people try to match the timber to what is on their boat, and varnish it. It is the cheapest way I know of for securing the doors against flying open. And like I said, you may need something like a book case bar inside if you have tall stuff, or a dishpan to contain tall items. [Bungie does not make good retainers for books, you need a bar.]

Another solution I have seen is brass screen door hooks.

Sorry to keep you waiting so long, guys.

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Old 09-02-2015, 15:37   #26
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Re: Planning for a roll-over

Well, that's one that belongs in the frugal sailor thread!

So what I was thinking of was similar. A circle of timber with a segment (not a sector which is V shaped and meets the centre) sliced off one side. You rotate the disk so that the flat side is towards the door jamb (in this case the settee frame), close the door (settee lid) and then rotate the disk so that it laps the frame.

Very budget friendly, and probably easy to make with a good sized hole saw and some 8mm - 10mm ply, coat/soak the disk with fibreglass resin to make it both waterproof and strong.

Thanks Ann!
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Old 09-02-2015, 17:59   #27
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Re: Planning for a roll-over



+1!

From someone who has been in a semi roll over ;-) situation: DO NOT!

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Old 09-02-2015, 18:13   #28
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Re: Planning for a roll-over

Matt, do not forget to secure the cabin sole and it's lockers. On this boat, there are ring-pull latches for the lockers, access to stuffing box, depth sounder through hulls, etc., and the rest of the sole is simply screwed down.

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Old 09-02-2015, 19:25   #29
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Re: Planning for a roll-over

Here's one I hadn't thought of and have no good ideas about:

What could you do about external tank vents, especially fuel tanks? How do you keep the fuel in and the sea water out in the event of an inversion?

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Old 09-02-2015, 20:04   #30
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Re: Planning for a roll-over

When I was sailing dinghies and every time I bought another one, I always capsized and rolled it to see if I could get myself out of trouble... I guess this thread is a sort of virtual equivalent.

I am not planning to roll my boat, but just thinking:
- Even though most of us have secured our batteries, do 'normal', air vented lead acid ones, like Trojan T-105 many boats have as house batteries, leak acid when upside down or when tilted at 90 degrees? - - And if so, how much, just a few drops, or the whole content?
Hehehe, have AGMs now, can even be mounted upside down.

Still on batteries, there is one reason (keep centre of gravity low) to mount batteries as low as possible, and another reason to mount them higher in case of a rollover and coming the right way up again:
- There will be some salt water sloshing around and when the batteries under the floorboard are awash....., they do not provide much power if any.

Still thinking....about engine now, when in rollover:
- If the engine is running (and staying in place), lubrication is next to nil if the engine keeps running when the boat is on its side or upside down, hmm, soon the fuel pump will suck air and then stop? Will that be before any damage can be done?
- If the engine is running or not, and water sloshing around (after the boat has come the right way up).... how is the air intake protected from water ingress.. Water in the cylinder(s) is one sure way to damage the engine irreparably.

Still thinking.... about tankage ie diesel:
- Will they leak from the airvent, maybe OK if the airvents are outside, or will sea water then enter the tanks through this?

Still thinking..... about crew being in the cockpit:
- Hopefully all will be clipped on.... but can they be easily undone if the tether is not long enough?
- And when you undo the clip, can you hang onto the boat, or be swept away?

Still thinking..... about mast and boom:
- How soon would they fill up with water? And I guess a 15 mt mast will weigh then an extra 500 kg (that is when one tries to right the boat and trying the get the mast (then level with he water) out of the water).... hmmm that is lot of leverage.

Still thinking..... let me check the weather forecast for this afternoon:
- 10-15 knots of wind, with 20 knots in gusts, seas to 1 meter....., swell at 2-2.5 meters:
I am staying home!!!!

Maybe those with actual rollover experience could share that here.
And frighten a few of us.
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