Poichè ti documenti su rc universe, ti allego una valutazione del katana messo a confronto con il giles della stessa casa, fatta da un guru del forum americano:
"Better weather allowed me to put a few more flights on my new Ultra RC Katana -X. The new OS 1.60FX with it's Perry VP-30 pump is running fine. I like the plane a lot and it's a keeper.
It does good inverted flat spins but the Ultra RC Giles beats it.
It does good elevators but the Giles beats it.
It does good harriers but the Giles beats it with less wing rock and less effort to keep it in a harrier (in realtà il giles non ha nessuna oscillazione alare)
It does a good knife edge with only a very slight pull to the landing gear and beats the Giles which requires a little more elevator correction.
It does good knife edge loops a little better than the Giles.
It does knife edge loops from a hover, kind of like an outside knife edge loop. Haven't tried that with the Giles yet.
It does inverted flight with a little down elevator to stay level with the CG at 6 3/8 inches (limits 5.25 to 6 inches). The Giles requires no down elevator with the CG at 10 inches (limits 7.87 to 9.84 inches) but requires more mental concentration during landings.
It hovers easily like the Giles.
Remember, this evaluation was based on MY planes and setup. Your results may vary "
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