ORIGINAL: contempo
CREST #2 has had a couple of test flights this week.
The new rudder design is working quite well. My first UCD would do nice inverted flat spins but it was sometimes difficult to initiate the spin. With the new rudder it is effortless. Very flat, with good rotational speed (very graceful). I think upright flat spins may be possible (I haven't attempted it yet). Knife edge performance is greatly improved. The plane still wants to pull toward the gear, but not nearly as bad as #1. With the application of of some "up" elevator I was able to do a knife edge pass with no ailron input! Without elevator , it does a great knife edge circle! Power of the YS 1.10 is awesome! I really enjoyed flying #1 w/ OS .91 but #2 w/ the YS is much, much better. With the 1.10 vertical is awesome. You have unbelievable pull out authority. It's like flying a huge foamie airplane!
Contempo, Any more results from the modified rudder? Now that I've got my thrust angle dialed in, 4 degrees right on Saito 100 with 15/4 prop, I've had a chance to play around a bit. On the past UCDs I tried Knife edge with varying results, on this one, even on low rate rudder it dives to the deck severly. I can easily compensate for this on other models, but the inputs required on this one are extreme. I thought that you may have had a chance to get comfortable with the new mods and wondered if you are still of the same opinion on the rudder as when you first tested it out. Thanks, Joe