I don't believe I have an iron core. The C&C 29-II manual says that it's lead/antimony alloy cast around steel keel bolts. I'm also in fresh water (Lake Superior) where rust is slower than in salt. My main concern is expansion due to small amounts of water getting in through the bilge around the keel bolts and then expanding gaps due to the freeze/thaw cycle up here.
Gene > > Expansion will occur when moisture and ferrous metals react through > rusting. Do the 29's of these years have a cast iron core? If so, the > moisture will cause the iron to corrode and be very serious. An example of > this is when concrete reinforced slabs develop cracks sufficient to allow > water to penetrate to the rebar. Over time, the slab will fail as an > integral unit. > > Bill Dakin > 25MKII > > On Mon, Apr 10, 2017 at 12:35 PM, Eugene Fodor via CnC-List < > cnc-list@cnc-list.com> wrote: > > > I have a crack at my hull/keel joint and am debating filling it with > 4200. > > It is no significant and as I understand it this is pretty normal for > boats > > with an external keel. My concern is that since my boats up north in > > Wisconsin and spends a good amount of time frozen, I'm wondering if > filling > > it might actually cause expansion if any water gets down the keel bolt > and > > through the cracks. One of my keel bolts has had this problem which I > > mitigated through drilling a hole on each side of the bulge, epoxy fill > and > > some vigorous hammering. Thoughts? > > > > Gene Fodor > > "Hawk" > > C&C 29-2 84-85 > > > > _______________________________________________ > > > > This list is supported by the generous donations of our members. If you > > wish to make a contribution to offset our costs, please go to: > > https://www.paypal.me/stumurray > > > > All Contributions are greatly appreciated! > > > > > > > -- > ____________________ > Bill Dakin > Tapestryaussies.org > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: <http://cnc-list.com/pipermail/cnc-list_cnc-list. > com/attachments/20170410/f8f31537/attachment-0001.html> > > ------------------------------ >
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