[Alberg30] RE:movable staysail stay
Gord Laco
gord at transatmarine.com
Thu Jan 10 03:56:33 PST 2002
Good Morning Mates -
Barchetta Mia, I have pondered the plate idea too... when I converted my boom to slab reefing and installed a u-shaped bail I worried about the bolt "walking" through the soft aluminum. To combat this possibility I riveted a Stainless steel dinghy chainplate over the through bolt hole port and stbd so that the load was spread over three rivets as well as the bolt. I lined the plates up with the angle of the vang tackle. Sort of the same principle I used to use when fitting high load stuff to my old Folkboat's spruce spars (did I mention I am a lapsed woodie?) I did not put a compression tube in the boom bail and felt I did not suffer for it because I was carefull not to overtighten the bolt. I used an aircraft nut and "riveted" the thread end after making the nut just snug and cutting the bolt with about 1/8" thread showing. I wanted to allow the bail to swing and of course did not want to crush the boom extrusion.
I too spent a bit of time with a beer looking at that fwd bulkhead and wondering if tying into it would support a bad weather staysail tack - but decided not to test it. I want that tack to be capable of lifting the boat. With regards to distance back from the bow... I think just ahead of the bulkhead is our choice.
Zevulun - I think the tang you have on your mast at the spreaders was likely installed for your spinnaker pole lift - It would be asking a lot of it to serve as the halyard tang for a heavy stays'l set flying on its own wire luff; and the "staysail" on the diagram was intended to be a light reaching sail to be set under the spinnaker. I have one of my old Folkboat genoas, and have experimented but do not think it works well.
Well, there's an essay.
Gord
#426 "Surprise"
----- Original Message -----
From: Miabarchet at aol.com
To: public-list at alberg30.org
Sent: Wednesday, January 09, 2002 7:02 PM
Subject: Re: [Alberg30] RE:movable staysail stay
Gord,
I have tossed around the idea of adding a removable staysail for a couple of years, but I couldn't come up with a strong enough deck attachment. I had thought of attaching a chainplate of sorts to the bulkhead at the forward end of the v-berth but I wasn't confident with that.
I like your idea of the 3 padeyes, I would think that such a system would not pull through the deck and it would be simple to fabricate. I agree with the need put a sleeve through the mast to prevent compression. I am wondering if you thinks its
worthwhile to weld on a couple of 1/4'' thick curved Alum. plates to either side of the mast for added strength?
Also have you decided how far aft of the forestay to locate the padeye on the deck?
I appreciate you sharing your ideas with the rest of us.
Jim Allocco
Barchetta Mia #565
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