I'd forgotten how big the original Big Bertha fins were. That's a lot of balsa!
I decided to trim them down a bit, it'll still be plenty stable.
I didn't want to mess with the original shape, I just trimmed off 1/8" off all sides.
The Bertha kit comes with 1/8" thick balsa fins, I'm making mine with 3/32" balsa.
For the first time in years, I'll be papering the fins. It'll make them a little thicker and much stronger. More on that later.
Here's the size comparison between the original size and my trimmed down version. Same profile, just a little more streamlined.
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