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Old Feb 23, 2013, 10:16 AM
Bruce Tharpe is offline
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Rogue River, OR
Joined Feb 2003
24 Posts
Go Jed, Go! Looking really good so far, excellent pics, very thorough execution.

Thought I would chime in on the CG discussion. I'm all for checking it before covering, and I agree with Derek that covering will shift the balance point aft. My guess is not much, maybe 1/8", 1/4" at most. Will be interesting to see the exact shift if you do a pure before and after CG check.

The main point that I wanted to make is that the plans show a conservative balance range located on the main spar. That is definitely where you want to start for your first flights. Later on, you may want to try moving it aft of the spar, no more than 1/4" at a time. I have settled on a balance point that is about 1/2" aft of the main spar, mainly because it lets me do flatter flat spins (which I love) without being too pitch sensitive. So you might want to keep this in mind and make your battery or equipment positions adjustable to allow some experimentation with balance point later on...
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