ORIGINAL: timothy thompson
I am a full scale 172 driver N318RC p factor is involved in all prop aircraft. As the engine rotates counterclockwise the load on the prop is huge. P factor is the uneven force from the blade rotating forward and then back. You apply rt rudder always on to. A trike setup is easier to handle on the ground whereas a tail dragger requires a delicate balance of elev. rudd. and power. I have been flying rc for 30 yrs and full scale for 5. Ive heard the nextstars are not all they say they are ive never flown one as i fly WWII fighters mainly. my current proj is a pcm tristar turbine. about 10,000.00 in that project.
Maybe his plane is out od trim or the wing is not on straight. Use thread to see if wing is square on the fuse good luck
I've been flying FS aircraft for 50 yrs & models for 56, I'm also a fluid dynamics engineering specialist. P-factor is a minor force. It only occurs at positive or negative angles of attack (negative angles of attact are uncommon, brief transients). In a significant positive AOA, wherein the descending blades on the starboard side of the aircraft are at a greater AOA than the ascending blades on the port side, the starboard side blades consequently generate more thrust -- pushing the nose to the left. In normal cruise, where the AOA is close to zero, P-factor isn't even there as a sensible force.
The most powerfull force perturbing the yaw axis is the spiral slipstream, which is present in most flight regimes. Torque perturbs the roll axis (& indirectly the yaw axis), but is only a truly significant factor during acceleration at low speeds. It can be nearly overwhelming in the case of a very powerfull single engined AC (Griffon-engined Spits, Thunderbolts, Corsairs etc.) if the pilot is unprepared. P-factor is also more powerfull in those cases. The best example of a significat P-factor effect that I can think of is the case of the prototype & Mk I Spitfires, with coarse fixed-pitch 2-bladed propellers. They tried hard to turn left on initial take-off role -- from the combination of P-factor & spiral slipstream.