[Public-List] Chainplates

[Jonathan Bresler via Public-List]

Photos on the Alberg 30 website of Argo #247 after the rig dropped due to
the upper port chainplate pulling free.

http://www.alberg30.org/gallery/main.php?g2_itemId=903
http://www.alberg30.org/gallery/main.php?g2_itemId=907
http://www.alberg30.org/gallery/main.php?g2_itemId=912
http://www.alberg30.org/gallery/main.php?g2_itemId=916
...
the "next" button will take you to a couple more photos of the same.

Jonathan

On Sun, Nov 1, 2015 at 7:45 PM, Wes Gardner via Public-List <
public-list at lists.alberg30.org> wrote:

> Fortunately, my knees and bulkhead show absolutely no stain or
> discoloration at all.  Someone must have kept at the chainplate cover
> plates.
>
> The bolts for my uppers are definitely deformed.  For me, a dismasting
> just isn't worth the risk. I have access to a bench top drill press so it's
> just a matter of slacking one shroud at a time, rig a temporary as
> required, unbolt the chainplate and drill it out.  I've read all the
> threads on the list and I've not heard any problems with actually getting a
> drill in there to drill the knee or bulkhead-there's not a lot of room, but
> it looks doable with a small drill driver.
>
> Sent from my iPad
>
> > On Nov 1, 2015, at 6:33 PM, Gordon Laco <mainstay at csolve.net> wrote:
> >
> > Have there been any failures of these bolts besides the one Yves Gelinas
> > experienced in the Southern Ocean?
> >
> > Gord #426 Surprise
> > (just back from the 2015 Misery Trip, not quite Southern Ocean but a good
> > facsimile...we made it back OK, broke nothing, nobody got hurt... My
> wife is
> > annoyed with me for doing it... )
> >
> >
> > On 2015-11-01, 6:10 PM, "Wes Gardner via Public-List"
> > <public-list at lists.alberg30.org> wrote:
> >
> >> My mistake! You know I kept looking at my chainplate bolts and in my
> mind
> >> thinking "yup, those were upgraded to 5/16" because they were new and
> >> shiny....seems when I put the 7/16 wrench on the head of one, I
> realized it's
> >> just a 1/4-20. Yeah, they are shoulder bolts (I believe I read that the
> >> originals were 1/4-20 but with thread the whole way), so they were
> replaced,
> >> but not upgraded to 5/16. Furthermore, they set the bolts with the nut
> on the
> >> chainplate end allowing the chainplate itself to bear on the threaded
> part of
> >> the bolt before the shoulder started....geez, at least turn the bolt
> around.
> >> My understanding is that most of these failure issues have been in
> shear,
> >> right?
> >>
> >> And when I looked really close, the bolts for the uppers are stretched a
> >> little bit.....hmmm
> >>
> >> I was going to bed the actual chainplate, where it contacts the knee,
> in 5200
> >> as it will never need to be removed from the boat again. However, I'm
> going to
> >> bed and seal the chainplate covers (mine has Shaefer cover plates) in
> 4200.
> >>
> >> I'm also going to change out the backstay bolts as well.
> >>
> >> Can anyone add any helpful hints or "gotchas" specific to the Alberg 30?
> >>
> >> Wes
> >> _______________________________________________
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> >
> >
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-- 
Jonathan M Bresler
Alberg 30 #262
Annapolis/Eastport MD