Thread: Discussion Plank 101
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Old Sep 30, 2012, 01:33 PM
Knoll53 is offline
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United States, CA, Marina
Joined Sep 2006
3,246 Posts
Great Mark. Good idea!

I'm using .231" diameter fiberglass filament wound epoxy tubing. I could easily wrap it with some kevlar cloth at 45/45 to add torsional strength and rigidity. Because the tail boom is so short, the torsional deflection should be small. I'll start off with the solid CF core version. I wouldn't imagine that I'll be able to get much rotational force on the fin with the discuss launch with such a big wing. I'd think that using the fin as a handle for bungee launches would induce more bending on the tail boom. So strong and flexible looks attractive at this point.

I fully expect that this tail boom is the most vulnerable to damage part of this plane. We will know soon enough.

Kent
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