RE: [bolger] Re: alum. mast
Sounds like your idea is working well too! My usage included some extended periods of forgottonness/neglect, and I suspect that the rot issues I had on the first set were my own fault.
Thanks for taking the time to share your experiences!
I went through the trouble to epoxy encapsulate all the stringers before assembly, and that seemed to work OK.
Thinking about your solution, perhaps a bottle brush on a wire or stick might be of use in making sure the insides are well coated.
the local kitchen store sell them in different sizes for a few bucks.
I guess I fell into the air circulation camp to prevent rot.
I kept the ends of the boom of my boat open and I cut the ends of the spar at a rakish angle just to make things more interesting, Keep air circulating, and allow for easier fastening of the fittings.
I'm always tinkering with things, so it's nice to be able to get into the hollow boom.
The mast has a hole near the foot for the masthead light wire and air can get around the halyard sheave, so while there is less circulation, some is theoretically possible.
Winter storage for both is in the dry basement away from the furnace.
6 years and going strong.
On Jun 19, 2009, at 5:38 AM, Kimbro, Ray (N-SAIC) wrote:
The first set I made weren’t filled, and I must not have gotten a good epoxy seal on the inside, as I *did* get some rot. SO – what I tried for the second set was to leave the ends open (at first), dump epoxy inside while twirling the spars, let that set for 24 hours, and then filled it w/the expanding, gap filling foam. You’ve got to be careful in your application so that the expansion can “escape” towards the open ends. After the foam cured, I cut the excess off, and the epoxied wooden plugs into the open ends. So far – I’ve got a set that I’ve kept and abused for about 10 yrs, but, no signs of rot.
I agree. They aren't that hard to build and perform beautifully.
Filling them with foam sounds scary. Have you considered rot from trapped moisture?
On Jun 18, 2009, at 11:21 AM, Kimbro, Ray (N-SAIC) wrote:
Folks – at the risk of offering an unrequested opinion, I’ve made the birdsmouth spars ala the WoodenBoat magazine instructions – they’ve turned out nice, light, stiff – and have seemed to hold up pretty well, especially when I started filling the interior of the spar w/spray foam.