After setting the carb for both high and low speed, the Thunder Tiger GP-42 is very easy to tune. Break-in with just two tanks. As Thunder Tiger GP-42 was made with high tech CNC machine, no prolong break-in is needed. I pointed it down the runway. I taxied it and found it need right correction on the tail wire dragger for it to roll straight. After the correction was made, I pushed the throttle to bring it to it's airspeed, it only need a few up elevator trim and right aileron trim to get the four corners levelled. I did a couple of figure eights around the field, I tried a low slow passby. Surprisingly it glides in good characteristics! No tip stalled was observed. Immelmann turn are also good. Thanks to Thunder Tiger GP-42 for it's good high and idle speed responds.
Loops and rolls were look very nice. I tried to climb-up and made spin/roll dive. The spin rate was very fast but predictable. Inverted flight also very stable with just a little down elevator. After eight minutes of flying, I lower down the throttle and made a base leg turn for landing approached. This Extra Sport 30 was very easy to align with the runway. It glides a few inches of the runway and touched down safely. I made three flights today.
Side by side with Kerol's Sport 40 after the maiden flight.
Kerol and Achoy
Achoy's Trex 450
Kerol took video while Achoy did the actions, hehehe
Achoy did low inverted hover with his Trex 450
Lower and lower
RC excavator, hehehe..... 
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