A couple of technical and personal delays are going to push out my Bixler's first flight, but I thought I'd share a couple of pictures.
Mike Pursifull suggested increasing rudder area, which seems like a reasonable thing to do. I used a cardboard photo mailer and glued the edge together with white glue, and used silicone calk to glue it to the rudder. The result is light and super stiff and about doubles the rudder area. I used calk hoping it'd be easier to undo if I want to try something else.
Here are the two halves with a notch for the control horn:
Here's the extension while it's installed:
I also implemented the rubber band and Command hook idea:
I'm not very satisfied with this solution. It was too fiddly to install and I'm not sure I have enough tension.
Feedback is welcome.
I also had a minor disaster; one of the crummy aileron clevises broke when I was adjusting it. I'd like to replace it with something better. Does anyone have a good option to replace these? My local hobby store only has larger ones.