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Meat Wad

Keel bolt maintenance.

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Before and after photos
I was not sure if the rust was superficial, but it appears so. I have owned the boat for 6 years and it has been rock solid. No flexing anywhere , even in 25knts Upwind in 6 to 9 ft seas with pounding and surfing off the wind.


The question: what should I coat the metal with when I redo the bilge coating? Of course more cleaning is needed before coating.

before

1433597746_keelboltbefore.thumb.jpg.4cb41b299f1b729e94f90d863a7098eb.jpg

After

1148065583_keelboltafter.thumb.jpg.d034cb147756b0d311092c5714f563c6.jpg

All bolts wire brushed

596264657_Allbolts..thumb.jpg.2dbea36082ea16a1404eb3ed72214b2b.jpg

 

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Taken out of my old quarter tonner, they were about 30 ish years old at the time. The rust was obvious, the elongation most likely due to a grounding + corrosion down the length, not so much. 

 

DSC00523.JPG.0ceb925553624526a7ac29eff4128b05.JPG

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God I hate these threads..

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1 minute ago, Raz'r said:

God I hate these threads..

Why??

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Just now, Soley said:

Why??

Scary as shit!

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Actually, that's not so bad. Definitely due for replacement but still plenty of meat left. If I'd decided to inspect my bolts and they looked like that, I'd be happy with the timing: neither too soon nor too late.

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Is the boat on the hard?

I would take the nuts and backing plates off and have a look below the plate. You maybe able to see a bit down around the thread and spot any corrosion on the bolt which is likely.

Don't use epxoy  resin on the threads. It makes taking the nuts off extremely hard. 

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On 11/8/2018 at 9:04 PM, jack_sparrow said:

Rule of thumb is 10/15 years max having a proper look where you don't see.

Rule of thumb depends on what their made of. Steel, 15 years is too long. Ti or K400, 15 years is too short. 

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37 minutes ago, DDW said:

Rule of thumb depends on what their made of.Steel, 15 years is too long. Ti or K400, 15 years is too short. 

Grounding screws up RoT's, I agree over 10 for steel is pushing it.   DDW reality would be an interesting stat. I wonder what the actual time line for steel is? My guess is the majority exceed 15+ years and few fall off as never given a workout 

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These are 32 year old steel out my my old Columbia 43 iron keel.

They should have been replaced a bit earlier but the fairing was intact and the bilges were dusty dry.

 

 

8b These actually held the keel on!.jpg

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