No guys, i am aware of this effect you call the P-factor, my english isn't good enough and i didn't knew it before you mention it. I tried to take off without any rudder because to test the plane and the TO assist, for an experience to see what would happen.
Thanks to you, i know i don't have any pedal problem, so i'm going to apply your advices and use the rudder and slowly adjust the throttle.
Thanks :)