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Has anyone replaced their mast tangs (for example while replacing the
running rigging)?
If so, is there a stock source of these tangs or has anyone made some
engineering drawings of them so I can machine a new set before I take
the old ones down?Thanks,
Pete
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(make that standing rigging…a little fatigued after the rigging
inspection).On 2/23/2015 2:29 PM, Pete Dubler via maillist wrote:
Has anyone replaced their mast tangs (for example while replacing the
running rigging)?
If so, is there a stock source of these tangs or has anyone made some
engineering drawings of them so I can machine a new set before I take
the old ones down?Thanks,
Pete
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Hi Pete,
If I recall the tangs for the shrouds are just flat SS stock, bent with a hole on each end. I’ll be out at the boat tonight and the mast is on a rack so will look and take pictures and measurements if you like.
I replaced everything in my running rigging [sic] except the tangs. 😉
I looked at them and didn’t see any corrosion or cracking so thought I would leave them for now. Also worried it might be opening a can of worms to replace them. The lowers port to stbd are through bolted to the mast and I’m wondering if there is a sleeve around the bolt inside the mast to prevent compressing the aluminum under load. If so one would have to be really, really careful replacing the tangs because I can think of no way on earth to replace that sleeve if it dropped off.
Have you looked at that detail?
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I think the compression tubes are normally the full length of the OD of the
mast section. That is the holes in the mast wall are the same diameter as
the OD of the tubes. That way all of the compression force of the through
bolt and nut is on the tube not the mast wall. That’s how they were on my
previous boat. I also have not removed the tangs on the 424 to see if it
is the same.Regards,
John Stevenson
http://www.svsarah.com
Sarah’s BlogOn Mon, Feb 23, 2015 at 5:14 PM, Skip MacElhannon via maillist <
> wrote:Quote:Hi Pete,If I recall the tangs for the shrouds are just flat SS stock, bent with a
hole on each end. I’ll be out at the boat tonight and the mast is on a
rack so will look and take pictures and measurements if you like.I replaced everything in my running rigging [sic] except the tangs. 😉
I looked at them and didn’t see any corrosion or cracking so thought I
would leave them for now. Also worried it might be opening a can of worms
to replace them. The lowers port to stbd are through bolted to the mast
and I’m wondering if there is a sleeve around the bolt inside the mast to
prevent compressing the aluminum under load. If so one would have to be
really, really careful replacing the tangs because I can think of no way on
earth to replace that sleeve if it dropped off.Have you looked at that detail?
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That makes sense. Â Otherwise how would Pearson get them in to begin with.
 Â
Will try to  check thatSent from my Verizon Wireless 4G LTE smartphone
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The compression tube length is the width of the mast minus one wall
thickness. The hole on one side of the mast is the size of the bolt.
The hole on the other side is large enough to pass the compression tube
through.Pete
On 2/23/2015 5:33 PM, John Stevenson via maillist wrote:
Quote:I think the compression tubes are normally the full length of the OD of the
mast section. That is the holes in the mast wall are the same diameter as
the OD of the tubes. That way all of the compression force of the through
bolt and nut is on the tube not the mast wall. That’s how they were on my
previous boat. I also have not removed the tangs on the 424 to see if it
is the same.Regards,
John Stevenson
http://www.svsarah.com
Sarah’s BlogOn Mon, Feb 23, 2015 at 5:14 PM, Skip MacElhannon via maillist <
> wrote:Quote:Hi Pete,If I recall the tangs for the shrouds are just flat SS stock, bent with a
hole on each end. I’ll be out at the boat tonight and the mast is on a
rack so will look and take pictures and measurements if you like.I replaced everything in my running rigging [sic] except the tangs. 😉
I looked at them and didn’t see any corrosion or cracking so thought I
would leave them for now. Also worried it might be opening a can of worms
to replace them. The lowers port to stbd are through bolted to the mast
and I’m wondering if there is a sleeve around the bolt inside the mast to
prevent compressing the aluminum under load. If so one would have to be
really, really careful replacing the tangs because I can think of no way on
earth to replace that sleeve if it dropped off.Have you looked at that detail?
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The problem is that they used an aluminum tube for the compression tube
and it corrodes to the bolt.Pete
On 2/23/2015 6:05 PM, Skip MacElhannon via maillist wrote:
Quote:That makes sense. Otherwise how would Pearson get them in to begin with.Will try to check that
Sent from my Verizon Wireless 4G LTE smartphone
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When I gave Silverheels a staysail, I also added running
backstays. These, of course, required tangs on the mast, which I
made as skip describes below. I don’t recall now exactly how I
dealt with the compression tube, but I did insert one. As for the
angle, as long as you get it reasonably correct the tangs ill
work as intended. If it’s slightly wrong, the tang strap will
simply adjust itself. How could it not?Tor
Silverheels, P-424 #17
http://www.silverheels.us
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Not to worry, Charlie. Just inspect all the boat’s tangs very
closely, literally with a magnifying glass, for stress cracks or
corrosion. If you’re not 100% sure, get some of the dye riggers
use for that, which shows up tiny cracks so you won’t even need
the magnifier. If they’re suspect, Pete will (soon) be able to
tell you exactly how to replace them.Tor
Silverheels, P-424 #17
http://www.silverheels.us
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That is the sad truth…
On 2/25/2015 10:45 AM, cstewart via maillist wrote:
Pete is running out of things to replace. If he replaces the hull, can he still call it a Pearson?
"People cannot discover new lands until they have the courage to lose sight of the shore."
Andre Gide 1869-1951_______________________________________________
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Start of attached email. Subject: Re: Mast Tangs
Time to sell it and start over!!!!!!! Â Â :-]Post generated from Pearson424 Forum using Mail2Forum
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🙂
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Re: Mast Tangs
Author:
Silly question. Â I’ve owned the boat and sailed her for 6 years now, but never found out what the tang on the mizzen is for. Â This discussion brought it to my attention. Â I’m sure I’m missing something here (the Admiral always says I have tunnel vision).
Dan Kalinowski
Jolly Lama #135
Keehi Lagoon, O’ahu
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What tang, Dan? Where on the mizzen mast? I expect we all have upper & lower tangs for the upper & lower mizzen shrouds.
Tor
Captain Tor Pinney
http://www.silverheels.us
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Start of attached email. Subject: Re: Mast Tangs
The tang on my mizzen was on the forward facing side. It had a cable attached that you could use on the main boom as a lift. So that you didn’t have to rely on the topping lift to keep The boom up while at the dock or at anchor.
AlanSent from my iPhone
Quote:On Mar 1, 2015, at 4:32 PM, Silverheels via maillist wrote:What tang, Dan? Where on the mizzen mast? I expect we all have upper & lower tangs for the upper & lower mizzen shrouds.
Tor
Captain Tor Pinney
http://www.silverheels.us
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Re: Mast Tangs
Author:
The tang on my mizzen is forward facing and about 3 feet below the spreaders. Â It never had a cable/line attached since I bought the boat. Â Maybe Alan’s right in that it is dock backup for the main topping lift. Â Never thought of it that way, but never knew there was a need for a secondary topping lift. Â This is the only tank on either mast.
Dan Kalinowski
Jolly Lama #135
Keehi Lagoon, O’ahu
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I use that tang for a block and tackle that are always rigged as an MOB
lift but mostly use it as “remove before flight” support of the aft end
of the main boom. This seems to quiet things down in rolling
anchorages. (we have a garhauer solid vang and no topping lift, but
this line pulls against the main sheet and keeps the boom pretty still).Pete
On 3/1/2015 5:26 PM, aphil138— via maillist wrote:
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Here is a picture of a “tang” connecting shroud end fitting to mast.
Your boat perhaps does not have the red oval.On 3/1/2015 5:34 PM, dan.kalinowski— via maillist wrote:
Re: Mast Tangs
Author:
The tang on my mizzen is forward facing and about 3 feet below the spreaders. It never had a cable/line attached since I bought the boat. Maybe Alan’s right in that it is dock backup for the main topping lift. Never thought of it that way, but never knew there was a need for a secondary topping lift. This is the only tank on either mast.
Dan Kalinowski
Jolly Lama #135
Keehi Lagoon, O’ahu
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That mizzen tang thang was something I had meant to ask the forum about. I for the life of me could not figure out what it might have been for. Ive never used it, it just sits there. Now that it has been suggested that it was for lifting the main boom, it makes sense. Pearson must have liked that concept, for on my previous P323, they had swedged a 3 foot cable off of the backstay and put a snap shackle on the other end for holding up the boom. I never used it either.
Charlie
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