I ran it in with a few tanks on the test stand before I got the twist. I had about another 50 flights of about 8 to 10 minutes each, so maybe another 6 or 7 hours on it. You'll like the fuel efficiency also, I don't know how big the Tiwst tank was, but I do know it was 43 cranks to fill it and usually 10 minutes was about 23 cranks to refill with moderate throttle use. When not going for vertical thrust, I spent most of my time at about 1/2 throttle.

Since they are supposed to be preset and run, I would think if you ran a tanks through it on the ground, you would have no trouble. You might not even need one tank, but at least you can get a duration idea from the ground run. I initially had problems keeping the idle from loading up, but adjusting the factory set low needle limiter a small amount cleared it up. Some people just take the limiter off, but I left mine.

I dorked the Twist flying inverted 3 or 4 ft off the ground in a high speed (for a Twist that is) pass. Had been flying the pattern inverted and just lost my train of thought and pulled full up when I shoulda pushed. You can see pics in the crash forum under 'What yellow matches a Twist'. The front of the fuse is totalled, but not as much damage as I might have thought.

Good luck,
Duke