davideboracay,
Can anyone give me the BEST motor(OS 46 AX)---prop combo for this airframe to get as much torque(vertical performance)??
Hi Davide,
Sorry to tell you but you need a bigger engine for hovering and good pullout. I have seen a guy fly it with nearly 60-sized twostroke engine and the performance is the minimum required for that type of flying. You need a very strong twostroke like the West50T1, Webra 55, OS55AX or saito82, YS63. Or if you want to go even bigger then go for a MVVS91, OS91FX or the Saito 100 would pull it easily

. 10-15% nitro is all you need for the twostrokes but the fourstrokes mentioned above can turn a few hundred more if you feed them with more nitro. Use low pitch 4-5" props with large diameter.
Picture of the West50T1. Suggested to turn a APC 13x4W @ 12-12500rpm. Good luck!