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Old 13-06-2016, 07:45   #1
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Determining shroud diameter

Hello. I need to replace the shroud covers on my Newport 33. I am unsure of the the diameter of the shrouds. How do I go about determining the diameter so I buy the propoer shroud covers?
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Old 13-06-2016, 08:16   #2
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Re: Determining shroud diameter

Buy a cheap set of digital calipers at Harbor Freight and measure them directly. Or put a tape measure behind the wire and take a peek, it isn't as exact but it generally works fine for most things.

The real question is why you would add shroud covers? They accelerate corrosion and make it harder to inspect.
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Old 13-06-2016, 08:20   #3
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Re: Determining shroud diameter

Stumble,
Well, now you've presented me with a dillema. Do I go to Harbor Freight and buy another tool (think kid in a candy shop) or do I use what I already have/ Decisions, decisions....

Thanks for the advice. I do appreciate it.
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Old 13-06-2016, 09:03   #4
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Re: Determining shroud diameter

or, using the tape measure you probably have, measure the circumference, and then determine the diameter

C = 3.14159265358979323846(diameter)
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Old 13-06-2016, 09:14   #5
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Re: Determining shroud diameter

Once you have a set of dial calipers, you'll be glad that you bought them. As there are a lot of things which they're handy for measuring. Even the depths pf holes, for example.
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Old 13-06-2016, 09:16   #6
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Re: Determining shroud diameter

Are your shrouds swaged? If so the flat should have a number in it. That number divided by 32 is the nominal diameter of the shroud.
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Old 13-06-2016, 09:19   #7
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Re: Determining shroud diameter

Calipers are one of the necessary tools on a boat for me so I would get them anyway. They are great to set zero's for rig tune, measure all sorts of things from replacing bolts to cushion foam. I have a set on every boat I work on just so there's always a set handy. I think they run about $15 at HF, so it isn't a big investment.
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Old 13-06-2016, 11:02   #8
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Re: Determining shroud diameter

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Are your shrouds swaged? If so the flat should have a number in it. That number divided by 32 is the nominal diameter of the shroud.
Cal40John "Swagged"? That's a new term for me. Please define.
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Old 13-06-2016, 14:47   #9
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Re: Determining shroud diameter

Don't leave home without a caliper. One of the tools that I use the most from determining pin size to wire diameter. https://www.amazon.com/TEKTON-7165-6...words=calipers
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Old 13-06-2016, 15:24   #10
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Re: Determining shroud diameter

I use plain China made plastic "calipers". Given shroud diameters are spaced every 1mm or so, you always get the right number. BTW you can tell 4 from 5 from 6 mm by the eye. I have never tried with bigger wires though (?).

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Old 13-06-2016, 15:47   #11
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Re: Determining shroud diameter

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I use plain China made plastic "calipers". Given shroud diameters are spaced every 1mm or so, you always get the right number. BTW you can tell 4 from 5 from 6 mm by the eye. I have never tried with bigger wires though (?).

b.
That's true, unless you have standard sized wire, in which case good luck trying to eyeball that vs metric. For this it doesn't matter, but a set of calipers makes short work of the issue.
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Old 13-06-2016, 17:42   #12
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Re: Determining shroud diameter

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That's true, unless you have standard sized wire, in which case good luck trying to eyeball that vs metric. For this it doesn't matter, but a set of calipers makes short work of the issue.
What is a standard sized wire?

Is it the same like to say imperial units used?

If the difference between an imperial and metric wire is so small we cannot judge it by the eye, sure this makes little difference to the covers.

As you said, quality calipers are a huge bonus on any boat. All quality tools are, I think.

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Old 13-06-2016, 18:07   #13
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Re: Determining shroud diameter

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Originally Posted by daviddiscenza View Post
Hello. I need to replace the shroud covers on my Newport 33. I am unsure of the the diameter of the shrouds. How do I go about determining the diameter so I buy the propoer shroud covers?
Instead of buy covers you could make your own from leather Latigo is long lasting though dark in color, chrome-tanned easier to work with and can be purchased in that creamy color that looks so pretty too.
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Old 13-06-2016, 19:02   #14
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Re: Determining shroud diameter

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Cal40John "Swagged"? That's a new term for me. Please define.
Swagg - free stuff, quite often given to rich people who don't need free stuff.


Swage terminals -
Swage Terminals | Stainless Steel Fittings

Tool to swage terminal to wire rope -
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Old 13-06-2016, 19:50   #15
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Re: Determining shroud diameter

Schooner Chandlery, being a new owner of a boat, I don't have enough knowledge or experience to know if you're being serious or facetious. The "winky" emoticon makes me think it's the latter.

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