Chainplates

[gregry melnechuk]

Hi. I, recently, installed new chain plates on my Cabo Rico 34, hull
number 1. The bolts were 304 SS. The new chainplates are 3/8" X 2"
316 A240 stainless steel. I, still need to replace the bottom
staysail bracket, the bobstay and and the lower bobstay bracket that
is bolted through the hull. All of which show cracks or what appears
to be electrolysis corrosion. The swim ladder bolts are also 304 SS.
The standing wire rigging was just inspected and found to be in good
condition. Also, the lower rudder post bracket appears to be OK.

[Dave Newberg]

Hi Greg,

How do you know the parts are 304 SS. Did you have a lab analysis on
any parts? If you have any more details I'm interested?

Did you take Larry Vaughn up on his offer to help and fabricate parts?

I'm still trying to reassure myself and clear that nagging feeling
that our SS may be faulty, even after an all-clear from a rigger's
inspection.
When I inquired 6-7 years ago, CR claimed to have no accurate record
(safe legal approach I suppose) of which boats had the incorrect grade
of SS installed.

Dave
CR34 #7

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[norskm...@aol.com]

304 SS has a slight magnetic drag to it while 316 SS does not.

John
CR 38 - #24

Sent from my Verizon Wireless Droid

-----Original message-----

[Ron Applegate]

Greg - We own CR34 hull #6 and replacing chain plates is also in our future. How big a job was it to remove the old chain plates? Were they bedded in something nasty like 3M 5200?

Ron

[gregry melnechuk]

Hi Dave.  I don't know, for sure, that the bolts are 304 SS.  But when I removed them, they are much softer than the 316 SS bolts that I installed.  All the SS existing bolts have a lot more rust.  I don't plan to have them analyzed.  The old chainplates were fabricated out of 1/4" SS with another 1/4" X 2" plate welded to the plate.  they were all cracked.  I had the chainplates fabricated here in St. Augustine.

cheers, greg

On Mon, Apr 8, 2013 at 8:42 AM, Dave Newberg <sv.c...@gmail.com> wrote:

Hi Greg,

How do you know the parts are 304 SS. Did you have a lab analysis on any parts? If you have any more details I'm interested?

Did you take Larry Vaughn up on his offer to help and fabricate parts?

I'm still trying to reassure myself and clear that nagging feeling that our SS may be faulty, even after an all-clear from a rigger's inspection.
When I inquired 6-7 years ago, CR claimed to have no accurate record (safe legal approach I suppose) of which boats had the incorrect grade of SS installed.

Dave
CR34 #7

On Apr 4, 2013, at 12:12 PM, gregry melnechuk wrote:

Hi. I, recently, installed new chain plates on my Cabo Rico 34, hull
number 1.  The bolts were 304 SS.  The new chainplates are 3/8" X 2"
316  A240 stainless steel.  I, still need to replace the bottom
staysail bracket, the bobstay and and the lower bobstay bracket that
is bolted through the hull.  All of which show cracks or what appears
to be electrolysis corrosion.  The swim ladder bolts are also 304 SS.
The standing wire rigging was just inspected and found to be in good
condition.  Also, the lower rudder post bracket appears to be OK.

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[Clay]

As most of you know our boat hull #2 experienced a chain plate failure causing a demasting. The previous owner had a metal analysis conducted by a reputable lab whom determined it was SS 304. Thus Cabo Rico settled with the original owner  with all new standing rigging and mast prior to our ownership.

By-the-way we looked at hull # 1, which was located at that time in North Carolina, and that vessel had the same chainplate configuration( 2 part chainplate welded together) as our vessel and we informed the boat broker at that time that there was a possible situation with improper stainless being used.


Clay
s/v 'Tango'
CR 34 hull #2

[gregry melnechuk]

I've changed the chainplates on hull #1.  Bolts were also 304 SS.

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