[C320-list] Shaft strut questions

[WindSwept]

In case someone else thinks they have leakage at the bolts holding the strut in place I want to share my findings.   What I was seeing was not a salt deposit.  I brushed it off with a small stainless steel brush.  There was absolutely no signs of rust staining. The brushed off powder did not have a salty taste.  I put one of the bigger pieces in water and it did not dissolve.  Evidently Catalina sprayed gel coat over the bolts, nuts and fiberglass and it stayed white while the surrounding area turned a little yellowish since 1995.   The white really looked like a salt residue. 

> On Jul 31, 2022, at 7:40 PM, windswept at stx.rr.com wrote:
> 
> Thanks Jeff.
> 
> While the relative minor leakage at this time isn't a leak problem, the
> possibility of crevice corrosion causing the bolts to fail is downright
> scary.  I will probably consult with Catalina, but I cannot imagine what
> they could tell me that would alleviate this concern.
> 
> Larry  
> 
> -----Original Message-----
> From: C320-list <c320-list-bounces at lists.catalina320.com> On Behalf Of Jeff
> Hare
> Sent: Sunday, July 31, 2022 1:41 PM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Shaft strut questions
> 
> Yes... I uploaded the factory diagram here.
> 
> C320.org -> C320 Resources -> Reference Documents   (Under the Manuals and
> Technical Info / Misc category)
> 
> Misc. docs category link
> https://c320.org/filemgmt/viewcat.php?cid=20   
> 
> Strut Doc link  (It's an image file)
> https://c320.org/filemgmt/visit.php?lid=211   
> 
> Good luck
> -Jeff Hare
> 
> -----Original Message-----
> From: C320-list <c320-list-bounces at lists.catalina320.com> On Behalf Of
> windswept at stx.rr.com
> Sent: Sunday, July 31, 2022 1:36 PM
> To: C320-List at Catalina320.com
> Subject: [C320-list] Shaft strut questions
> 
> On WindSwept (hull 246) there is a hump on the inside of the bottom directly
> aft of the shaft log.  The hump is a couple of inches high.  I believe this
> is directly above the shaft strut.  Four bolts stick up from the top of this
> hump with nuts and normal sized washers.  The bolts are cut off even with
> the top of the nuts.  I am not at the boat now but estimate the bolts to be
> 3/8".    Does anyone know how this part of the boat is constructed?  Do the
> bolts hold the strut in place?   When viewed with the boat out of the water
> the strut appears to be glassed into the hull.  Is this hump part of the
> hull itself or a liner?  Has anyone replaced these bolts, or removed their
> strut?  I am asking these questions because I noticed salt buildup
> indicating some type of leak.  I did get some saltwater into the stern
> compartment last week which may have found its way into any space between a
> liner and the hull in this area if such a space exists.   
> 
> 
> 
> Can anyone recommend a contact at Catalina to ask about this?
> 
> 
> 
> Thanks,
> 
> 
> 
> Larry Frank
> 
> C320 1995 #246
> 
>