If not, build 5. 5th is the gin pole and a
spare?
Nice use of materials, pieces, and budget!
Thanks!
Though since I'm personally sold on a lifting mast instead of a
gin pole, I'm not sure it would work for me.
I see. I like the non rotating mast and sail system Rob has sketched out. I hope to build it on an E25 and see how it works.
If we assume two piece masts, could they be
4 clones? Like do they HAVE to be top/bottom?
I think they might have to be top and bottom. There's much more
stress at the bottom, so it needs to be thicker/wider/heavier. But
we don't want the extra weight up high:
- It's extra weight and cost
- It adds to heeling moment
- It helps to have thinner/flexible tops to bend in gusts
Another limiting factor is what we can actually fit into the
leeward hull and then remove. A 25' half mast would probably need
to be fit inside the hull.
What are you assuming to be the mast height? I could not find it, but, is 65' a good guess? That becomes 70',including bury, and two sections, 10% overlap, makes 2@ 38.5' poles, right?
I am not really sure there will be much extra weight. They are carbon fiber tubes. If i have to choose between saving weight on the mast head, and building multiple copies of the same thing, choose copies, i guess. I am.not sure.
That said, even the three-part lifting mast in 8'-6" sections
might not go in and out of the hatches on the leeward hull as
they're currently positioned.
But I'm reasonably confident something of that length could be
feasible.
- Mike
It is a glass boat. I am sure something could be rigged