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Bob,
It seems unlikely the 424 hull mold was molded in two halves. Not impossible, but unlikely. Also, if the weakness you’ve discovered is common to these boats, I wonder that it is not generally known already and even addressed by Bill Shaw at some point, like the oil-canning forward.
What was the source of the water leaking from the bottom of your keel? Was is bilge water exiting through a crack in the keel base, or seawater absorbed into the fiberglass (and filler?) from the outside? What kind of “filler” did you find in the bottom of the keel. Where and how much? What was the overall thickness of the ‘glass in the area you’re repairing? What are you doing to fix it once and for all?
FYI, I recently drilled a hole for a garboard drain plug a couple of inches above the sump bottom just abaft the ballast. Pearson built up that strip fore & aft to reinforce and round out the nearly 90-degree angle formed between the sump’s side and its bottom. The fiberglass there is 1-1/8″ thick and perfectly solid, no filler. I’d have preferred to find the ‘glass even thicker there – these boats in general are built on the light side for their size – but the execution seems proper and the strength adequate if not awesome.
Tor
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Silver Heels, P-424 #17
http://www.SilverHeels.us
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Original Message
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Hi Tor,
The thickness at the keel base may be 1″, but it was a couple of layers of fiberglass, a lot of putty (I'm guessing epoxy, but don't know), and then a couple of layers of fiberglass – I could see that this job had been done twice as there were two full repair places.
The water coming out was from the leaking hoses at the top of an over-full holding tank. Yuck. Fixed that problem and then there was no more water.
It took about 8 hours from grinding out to fairing the repair at the bottom, about two feet long. Dropped in the water this morning and am currently anchored awaiting the tide to change at the Battery (NYC).
NOAA says it's cloudy, but really, it's raining…. Hahaha on me!
It would seem to me that if the hull was laid up in one piece, there wouldn't be a seam right at the bottom as there'd be overlapping layers, but I could be wrong.
I can tell you now that it's solid 1+ inches of mat, chopped mat, and epoxy. I think it's as solid as it can be.
Thanks for the info!
Bob
On Sat, May 16, 2009 at 7:48 AM, Silver Heels < ([email][/email])> wrote:
Quote:Bob,It seems unlikely the 424 hull mold was molded in two halves. Not impossible, but unlikely. Also, if the weakness you've discovered is common to these boats, I wonder that it is not generally known already and even addressed by Bill Shaw at some point, like the oil-canning forward.
What was the source of the water leaking from the bottom of your keel? Was is bilge water exiting through a crack in the keel base, or seawater absorbed into the fiberglass (and filler?) from the outside? What kind of “filler” did you find in the bottom of the keel. Where and how much? What was the overall thickness of the 'glass in the area you're repairing? What are you doing to fix it once and for all?
FYI, I recently drilled a hole for a garboard drain plug a couple of inches above the sump bottom just abaft the ballast. Pearson built up that strip fore & aft to reinforce and round out the nearly 90-degree angle formed between the sump's side and its bottom. The fiberglass there is 1-1/8″ thick and perfectly solid, no filler. I'd have preferred to find the 'glass even thicker there – these boats in general are built on the light side for their size – but the execution seems proper and the strength adequate if not awesome.
Tor
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Silver Heels, P-424 #17
http://www.SilverHeels.us
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Original Message
<.. snip>Post generated from Pearson424 Forum using Mail2Forum
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Interesting tale with a happy ending – except for the rain. Take comfort in the knowledge that it is raining along the entire East Coast, as well, including here on the St. John’s River.
I’ve never done any work on the bottom of my boat’s sump/keel, so cannot say what’s in there. Sounds like another area for the rest of us to keep an eye on.
Tor
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Silver Heels, P-424 #17
http://www.SilverHeels.us
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Original Message
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