[BenR]

The plane definately wanted to sink on me. Stock it is suggested that you use a Eflite 2S 180mAh battery. The additional battery I bought was a nanotech one at 260mAh (and a bit thicker and heavier).

Hard to pin the problem here... wouldn't be too quick to blame the extra battery weight (perhaps position though), with only 3g difference between that nanotech and the stock Eflite.

FWIW, my (pre-ASX) Beast UMX flew out of the hand on its maiden with maybe a click or two of trim (aileron, iirc). I've flown it on 2S/120mAh and 2S/180mAh without noticeable difference. I keep the smaller battery a bit further forward, as the 2S/180mAh does need to be quite deep.

Did you push the battery in as far as it will go? When you up'ed the rates, what exactly were they set to? Don't know about the ASX version, but the original is pretty twitchy - at high speed with full rates it'll snap roll twice in a blink!

The battery was a reasonable way in. It may have been possible to go further, but at the time it seemed to be sitting in line with the wings, which I would have taken as the correct position. Once repairs are done, I will review that part again.

As for twitchy, that was the second crash. I tried to give it a touch of roll and was rewarded with a 180 faster then I have ever seen before. (I honestly cannot recall seeing it in a stage between almost level, needing a minor correction, and inverted 180 degrees past where I meant to start.) Crash immediately followed. And that was all under nil throttle. Hence my regretting putting the rates up after the first flight.