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Sig Spacewalker 1/3 scale (by rookie)
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08-24-2014, 04:13 PM
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Melchizedek
Join Date: Jul 2012
Location: Missouri
Posts: 1,127
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Well Robert, I found it.......
Not initially, I had to apply the 40/60 principle. What is the 40/60 principle ? Well (some may have slightly dif ratio), 40% of life is just plane showing up. If you get the first 40% right, the 60% usually takes care of itself. Duff the first 40 and, well lets just say you end up in the cart that your neighbor is pulling.
So, today it was 98 with a starting humidity at 7 am at 98 % . Nothing outsidish was going to hit my itinerary today. So I decided to not waist the day and drag 40% of me down to the shop.
And what do you know ??? I found my givadamn hiding under some dirty laundry in the corner. So I said,
"come on, lets go"
Onward.......
The plans called for a 1/8 x 3/8 spruce longeron down the side of the fuse. The covering is to bend over that longeron and make 2 flatish sides. Since I am sheeting the fuse I decided I wanted to round out the fuse a little. In the first pic the curved line is what my fuse will look like. Notice the curve is asymmetrical to the fuse side. That happens as the fuse size is reduced as you get to the tail feathers. At the largest part of the fuse the arc becomes more symmetrical.
So I made some former add-on's to make my fuse rounder. Also cut the 3/8 longeron down to 1/4- .
I cut 2 ribs out of maple and made a jig to shape 1/8 balsa ribs. The balsa got sandwiched between the maple and sanded to shape.
Since the formers are asymmetrical I marked the tops with 2 lines to keep them oriented.
Now as the fuse gets smaller at the back, the arced former gets smaller. So I made the last former and glued it in place and cut some oversized formers for the middle. Then sanded the middle formers to the correct conical plane. At the very back of the fuse it goes flat again. So the very last former was glued down oversized and sanded in to the last small arched one and the flat tail to make a transition rib.
Getting a little closer to sheeting the fuse. So glad I didn't duff the 40%. Have to remember that tomorrow when the alarm goes off.
Kevin
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