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-   -   Islander 36 rigging and chainplate replacement pics (http://www.sailnet.com/forums/gear-maintenance/106513-islander-36-rigging-chainplate-replacement-pics.html)

christian.hess 11-18-2013 06:13 PM

Islander 36 rigging and chainplate replacement pics
 
So I decided to start a new thread for recreational purposes regarding some major and not so major projects on my 1973 Islander 36 down here in el salvador!

I have already replaced one chainplate as I will be replacing not only chainplates, some rigging and BULKHEADS thought some of you might enjoy my near catastrophic previous owner rigging

I beleive he was this close to a dismasting considering the condition of some of the old rigging

having said that part of the reason the mast stayed up is that the UPPERS were heavily "upgraded" to 5/16ths where stock is supposed to be 1/4 inch

in any case some pics:

stbd forward lower snapped at one point, YIKES!
http://i774.photobucket.com/albums/y...ps21bc854e.jpg

main stbd chainplate underside pitting:
http://i774.photobucket.com/albums/y...ps8befd88e.jpg

and the most common chain plate failure point, WHERE ITS COVERED at the deck joint:
http://i774.photobucket.com/albums/y...psb31e654d.jpg

christian.hess 11-18-2013 06:47 PM

Re: Islander 36 rigging and chainplate replacement pics
 
more pics coming!

christian.hess 11-18-2013 06:57 PM

Re: Islander 36 rigging and chainplate replacement pics
 
check out this nice cracked swage!

http://i774.photobucket.com/albums/y...ps6f3ad5b2.jpg

and the wire(obviously seems like a lower quality wire by the amount of sever rusting)
http://i774.photobucket.com/albums/y...ps8fd9d398.jpg

and:
http://i774.photobucket.com/albums/y...ps6fe68b12.jpg

notice bends on the swages and turnbuckle

I hate closed turnbuckles btw!

GMFL 11-22-2013 08:35 PM

Re: Islander 36 rigging and chainplate replacement pics
 
Those are Fugly. Good thing you caught it before the rig came down.

What are you replacing it with? Stainless? Titanium?

jimgo 11-22-2013 11:54 PM

Re: Islander 36 rigging and chainplate replacement pics
 
Christian, I understand the issues with the stuff in the first 2 pics. The snapped piece is (obviously) a no-brainer, and the pitting on the 2nd one makes sense. As does the cracked swage. But what do you see on the 3rd pic? Is it the rust itself, or something more? It KIND of looks like there might be pitting on there; is that the concern?

christian.hess 11-23-2013 10:40 AM

Re: Islander 36 rigging and chainplate replacement pics
 
Quote:

Originally Posted by GMFL (Post 1150449)
Those are Fugly. Good thing you caught it before the rig came down.

What are you replacing it with? Stainless? Titanium?

stainless and upsizing a bit, both longer by 2 or 3 bolts...so the load is more evenly distributed across the newer and stronger tabbed bulkhead

and maybe thicker...Im contemplating this as we speak...simple routing of the deck hole is all that would entail

1 chainplate I already had made before I started taking pics was made with polished and passivated 304 stainless

yes I know 304 is not THE best, BUT it was highly polushed and treated...so I will continously check for rust and if needed ininstall and polish when needed.

If I can get 316l for the main plates Ill be happy but dont know if I can...

the good thing about 304 is its not as brittle as some forms of 316, I can prove this with some stainless parts I had made for my offroad honda motorcycle

youd be surprised...

in any case thanks for the feedback...

I bought the boat as a project, so Im not mad at the p.o or anything I had this coming..:)

christian.hess 11-23-2013 10:45 AM

Re: Islander 36 rigging and chainplate replacement pics
 
Quote:

Originally Posted by jimgo (Post 1150769)
Christian, I understand the issues with the stuff in the first 2 pics. The snapped piece is (obviously) a no-brainer, and the pitting on the 2nd one makes sense. As does the cracked swage. But what do you see on the 3rd pic? Is it the rust itself, or something more? It KIND of looks like there might be pitting on there; is that the concern?

sorry its the quality of the pic...it doesnt show some small details

first these damn closed turnbuckles rust from the inside out...so the threads are actually seized by rust inside and very bad looking...on the outside its basically spot rusting...

one thing you CAN notice is the slight bend on the whole "turnbuckle" notice that its bent at the upper "swaged" part...this is caused by weakening and cyclic loads...since the rig at one point was overtressed because one chain plate broke and let go I can only assume the weakest link next inline would be whatever was closest and tightest RIGGING wise...in other words the intermediate stays...

again this is my assumption...they are also 1/4 inch wire...

the uppers being massive held fine...but Im sure the PO had an OH CRAP moment and maybe saw a nice bend in the middle of the mast and quickly tacked over...

there is no evidence of any damage on the mast at all...so thats good:)

christian.hess 11-23-2013 02:48 PM

Re: Islander 36 rigging and chainplate replacement pics
 
thanks mods!

christian.hess 12-03-2013 11:45 AM

Re: Islander 36 rigging and chainplate replacement pics
 
little update, I have just ordered my new intermediates from RIGGINGONLY.COM

awesome guys

great price...

I will be installing in a couple of weeks when my friend in washington dc comes down, so I saved on shipping hassles to here

I cant find any place online or other that has better prices overall and service than rigging only, they are trully great...

I will have them swage the uppers and I will be installing norsemans on the lower terminals since I already have norsemans elsewhere

cant wait

chainplates aee being made as we speak too

304 stainless upsized a bit and longer and manually cleaned and buffed then polished to a mirror finish...

yay!


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