Thanks Chris I'll try to explain. My dad has started to be concerned that he will not finish his KR2 before he loses his medical so when he came across a J3 Pup part 103 ultralight at a price he couldn't pass up he bought it. The problem is that when you raise the rear wheel the plane veers to the left hard enough to cause several ground loops. We have gone over every imaginable cause, alignment, trimtabs, C.O.G. even relocated the placement of the mains acording to Tony Bs book. Still the same problem. So yesterday Dad measured the thrust @ each main @ full power with the tail level. He found that there was 30% more thrust @ the right main wheel. So my question is this about normal and just a learning to fly this plane thing or should we start looking @ adjusting the engine mount to compensate. We have both flown tail dragers and neither of us have experianced this much P factor effect. It did just occurr to me that this is also the lighest Conventional gear we have flown. The Original builder says this is normal and with time we should be able to"learn to fly it fine"I would rather fix what i believe an obvious problem. Any coments would be apprecaited. Thanks Wayne ----- Original Message ----- From: <boeing757me...@aol.com> To: <kr...@mylist.net> Sent: Tuesday, October 14, 2003 2:13 AM Subject: Re: KR>Re: P-factor
> So I'm not sure what you are asking. > > > P-Factor is an aerodynamic effect that causes propellor-driven planes to yaw
