I figured that it still wasn't right. I had the feeling that the glider was cruising with the nose about 10 degs right of the true heading. Maybe more drag on the right wing. Who knows. And maybe it was me, but I couldn't thermal to the right on the 24th April.

Set the whole thing up in the garden. The Moyes manual is sensible, tells you what to check first, but doesn't tell you how to correct things if your glider is not symmetric.

Battens: nr 6 green over 1cm too flat in the middle. most of the outer battens too flat, but that's at least symmetric. Outer concentrics: set to zero, inner concentrics, +/- 10mm down (backward).

From the front: everything looks OK. But looking from the back, no sprogs in, clearly the right wing trailing edge too high. It was the batten symmatry check that was the worst - from the 3rd, the right wing sat higher.

So I set the right concentric to neutral, and lowered the right sprog half a turn. Seemed to have reduced the differential twist.

Result: flies even better - no apparent bias left or right, no nose pointing off-glide. But it's still not symmetric - I can see when It's parked that the left tip sits nearly on the ground, and the right one is up in the air. So the frame is not balanced. Yet. We'll get there.

Why was it delivered like this?

8:26:48 PM