Re: [bolger] epoxy
Well, I'm glad I don't have the dilemma. Kern Hendricks warns that the
bolts will break near where they emerge from the epoxy. Most designs
involving lead ballast that I've seen call for phosphor bronze keel bolts.
Before I gave up on Dadori (a Badger), I was planning on using iron for
ballast, mainly because I could then use cad-plated keel bolts and drifts
and avoid spending some $800 on bronze rod. (Yes, it would require 50% more
volume to get the same weight.) I'd forgotten Larry Pardey's suggestion
that one search for used, slightly bent, bronze propellor shafts.
It might depend on where/how you will be sailing. A hull continuously
afloat in salt water is definitely at risk. I've seen recommendations that
one or more keel bolts (of whatever material) be pulled every few years for
inspection. A hull that spends most of its time on a trailer probably
wouldn't suffer, but that's a guess. The System Three "Epoxy Book"
specifically mentions salt water.
Maybe you could add a couple of bronze through-bolts to "sister" the
existing ones and keep things together if the SS did let go? Keels do go
missing and it's reputed to be an upsetting experience.
Roger
derbyrm@...
http://derbyrm.mystarband.net
bolts will break near where they emerge from the epoxy. Most designs
involving lead ballast that I've seen call for phosphor bronze keel bolts.
Before I gave up on Dadori (a Badger), I was planning on using iron for
ballast, mainly because I could then use cad-plated keel bolts and drifts
and avoid spending some $800 on bronze rod. (Yes, it would require 50% more
volume to get the same weight.) I'd forgotten Larry Pardey's suggestion
that one search for used, slightly bent, bronze propellor shafts.
It might depend on where/how you will be sailing. A hull continuously
afloat in salt water is definitely at risk. I've seen recommendations that
one or more keel bolts (of whatever material) be pulled every few years for
inspection. A hull that spends most of its time on a trailer probably
wouldn't suffer, but that's a guess. The System Three "Epoxy Book"
specifically mentions salt water.
Maybe you could add a couple of bronze through-bolts to "sister" the
existing ones and keep things together if the SS did let go? Keels do go
missing and it's reputed to be an upsetting experience.
Roger
derbyrm@...
http://derbyrm.mystarband.net
----- Original Message -----
From: "grant corson" <corson@...>
> Thanks Roger, that brings up an interesting point, my lead keel is held in
> place with five SS through bolts, any thought on that? I would hate to
> loose the keel to Davey Jones locker when I was not expecting it.
> Grant
>
> on 3/14/04 2:39 PM, Roger Derby atderbyrm@...wrote:
>
> > System Three specifically states that their epoxies are for bonding
> > wood and are NOT recommended for bonding metals.
> >
> > They also point out that SS requires oxygen to avoid "crevice
> > corrosion" and should not be embedded.
> >
> > Other epoxies may behave differently for bonding.
> >
> > Roger
> >
> > ----- Original Message -----
> > From: "grant corson" <corson@...>
> >
> >> Does anyone know if epoxy adheres well to stainless steel?
Thanks Roger, that brings up an interesting point, my lead keel is held in
place with five SS through bolts, any thought on that? I would hate to
loose the keel to Davey Jones locker when I was not expecting it.
Grant
on 3/14/04 2:39 PM, Roger Derby atderbyrm@...wrote:
place with five SS through bolts, any thought on that? I would hate to
loose the keel to Davey Jones locker when I was not expecting it.
Grant
on 3/14/04 2:39 PM, Roger Derby atderbyrm@...wrote:
> System Three specifically states that their epoxies are for bonding wood and
> are NOT recommended for bonding metals.
>
> They also point out that SS requires oxygen to avoid "crevice corrosion" and
> should not be embedded.
>
> Other epoxies may behave differently for bonding.
>
> Roger
>derbyrm@...
>http://derbyrm.mystarband.net
>
> ----- Original Message -----
> From: "grant corson" <corson@...>
>
>
>> Does anyone know if epoxy adheres well to stainless steel?
>
>
>
>
> Bolger rules!!!
> - no cursing, flaming, trolling, spamming, or flogging dead horses
> - stay on topic, stay on thread, punctuate, no 'Ed, thanks, Fred' posts
> - Pls add your comments at the TOP, SIGN your posts, and snip away
> - Plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA, 01930, Fax:
> (978) 282-1349
> - Unsubscribe:bolger-unsubscribe@yahoogroups.com
> - Open discussion:bolger_coffee_lounge-subscribe@yahoogroups.com
> Yahoo! Groups Links
>
>
>
>
>
System Three specifically states that their epoxies are for bonding wood and
are NOT recommended for bonding metals.
They also point out that SS requires oxygen to avoid "crevice corrosion" and
should not be embedded.
Other epoxies may behave differently for bonding.
Roger
derbyrm@...
http://derbyrm.mystarband.net
are NOT recommended for bonding metals.
They also point out that SS requires oxygen to avoid "crevice corrosion" and
should not be embedded.
Other epoxies may behave differently for bonding.
Roger
derbyrm@...
http://derbyrm.mystarband.net
----- Original Message -----
From: "grant corson" <corson@...>
> Does anyone know if epoxy adheres well to stainless steel?
Does anyone know if epoxy adheres well to stainless steel?
Thanks, Grant
Thanks, Grant