Update. Just watched a vid called " what can the Orlan-10 do ".
Wingspan: 3mtrs.
Length: 2mtrs.
Weights: 12.5 kgs min.
16.5 kgs AUW.
Cruising speed between 115 and 150 kph.
Endurance of up to 18 hours.
Saito garbage can mufflers visible on either side of cowl, engine seems to have a very soft rubber mounting and is self starting.
Black coarse pitch prop appears to be approx 14 to 16 inch dia.
Picture of crashed drone without cowl shows petrol Saito flat twin with small oil hole drilled in pushrod covers??
Anyone like to guess how big the twin is and who supplied the hundreds of engines, may even be thousands, good business for the supplier.