UPDATE: Flew last week, (sorry no vid taken) with a 6x4.5 prop for starters. Th difference in thrust at 5% throttle compared to the 5x7.5 prop was ridiculous, felt like it should be full throttle(yes, it really was 5% throttle, I calibrated it) could be because the 5 inch didn’t stick out enough. Anyway, had a perfect launch and immediately felt that it was nose heavy, required full up to keep it in the air. Just like the Flite test speed challenge, it only took 5% throttle to keep it barely flying at nearly(guesstimate) 35mph, but, when I throttle up, at least 80mph (on the safe side). I think it was going faster but not sure as I got video so no Doppler effect, also forgot the gps. Then, while bringing it in for a low slowish pass, a ft viggen comes in right in front of me, I bank, loose all lift, and plane hits ground with speed. But, it was just the nose had cracked off, (again) and left wing cracked. Just a little hot glue and it’s ready once more!