Finally, My Extra 260 (70" wing span) with its stock engine, SPE 40, had a successful maiden flight this afternoon. The AUW without fuel was only 4.7 kg, comparatively light.

Before the maiden flight, the engine was broken in on a stand with 2 full tank of gas a couple of days ago.

Upon starting up the engine and a few full throttles, before the maiden, one of the two 4mm dia. bolt holding the propeller snapped, and the propeller came loosen. The Master Airscrew 18" x 10" could be too heavy for this set up, so I changed to its stock prop which was a wooden 18" x 6". This wooden prop seemed to be a bit under pitch, as the plane could not fly fast even with full throttle.

After the 2nd flight, the aileron linkage was loosen due to vibration...other than that, everything seemed perfect...and a full tank could last for 15 min. flight, with throttle occasionally half and most times full...