Hybird MF14

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Chenier
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Re: Hybird MF14

Post by Chenier »

About 5 inches of the wooden mast is trimmed to fit inside the aluminum one. That was done by hand sanding and chiseling the shoulder. I could have done it while I had the lathe set up but I didn't know the inside diameter of the Sunfish mast.

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Here are the two parts of the mast assembled. A screw keeps the wood and aluminum parts from going their separate ways.

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The assembly will come apart soon so I can varnish the wooden part. That'll happen after I finish the boom & gaff.

Chenier
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Re: Hybird MF14

Post by Chenier »

The boom and gaff will be 1.5-inch diameter Sitka Spruce by 13 feet 8 inches long, the same dimensions as a Sunfish rig.

My supplier only had 8-foot lengths, but was kind enough to pre-cut scarf joints for me.

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Earlier in the project I came home from the box store with a 10-foot section of Unistrut. It makes a decent straightedge when carving plywood panels lengthwise with the circular saw.

In this case the strut was helpful getting the spar-building table straight and shimmed level. With a level table as my horizontal reference, the Unistrut then became the longitudinal reference for the scarf joints. Wrapped it in wax paper so I wouldn't epoxy the spars to the strut.

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Finished scarf joints

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Chenier
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Re: Hybird MF14

Post by Chenier »

Making the spars is the same drill as the mast: knock off the corners, then knock off the corners again and again.

Here's the first corner planed off.

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I got about two feet into it when I had one of those "this doesn't look right" moments. After a suitable period of measuring and head scratching I re-did the layout. :doh: Turns out some knothead had done the calculations for a hexagon instead of an octagon. :roll: Hence the double lines on the unplaned corners.

Halfway there:

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I gave the spars catchy names, "A" and "B", so I could tell them apart.

Chenier
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Re: Hybird MF14

Post by Chenier »

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Octagon

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16 Sides

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32 Sides

Chenier
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Re: Hybird MF14

Post by Chenier »

Boom!

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cape man
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Re: Hybird MF14

Post by cape man »

Very nice.
The world always seems brighter when you've just made something that wasn't there before - Neil Gaiman

Jeff
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Re: Hybird MF14

Post by Jeff »

Nice work!! Jeff

Chenier
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Re: Hybird MF14

Post by Chenier »

I've finished shaping and sanding the spars. They taper at the leach (outer) end, just like the original wooden Sunfish spars.

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The ends will be used to hold 'em while they get varnished. I'll cut and round off the ends after varnishing the body of the spar.

But before I clean the shop up for varnishing, I'll make the blocks and linked eyes that go on the booms.

Chenier
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Re: Hybird MF14

Post by Chenier »

My next project was turning the sheaves (pulleys) for the halyard and mainsheet. The halyard sheeve will be embedded in the mast, up top, so it's diameter is the same as the thickness of the mast.

Rounding the blank:

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There were a few false starts (ie: scrap) as I figured out how to cut the goove. Finished masthead sheave:

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I also turned two smaller sheaves for the mainsheet:

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They're just under 7/8" diameter. Ultimately they'll be attached to the underside of the boom. More on that later.

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Jaysen
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Re: Hybird MF14

Post by Jaysen »

My hatred of this perfection is simply due to my own feelings of inadequacy when seeing such beautiful work. It’s the boat porn equivalent of seeing the Mona Lisa, David, or the Sistine in person.

Your work is amazing. Absolutely stunning.
My already completed 'Lil Bit'. A Martens Goosen V12 set up to sail me to the fishing holes.
Currently working on making a Helms 24 our coastal cruiser.
“Mark Twain/Samuel Clemens” wrote:Eat a live frog first thing in the morning and nothing worse will happen to you the rest of the day.
Jaysen wrote: Mon Apr 29, 2019 3:44 pm I tried to say something but God thought I was wrong and filled my mouth with saltwater. I kept my pie hole shut after that.

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