ORIGINAL: jmwright75
Ok so im at the point in the instructions to balance my plane. It says that on the PT-40 the balance point is 4 7/64" from the leading edge. I have the GP balancer. And have set it so the points are as close to the fuselage as i can get them. I have the battery moved back as far as possible as with the servo tray, and I am coming up very nose heavy. Has anyone balanced one of these and know if that is the correct point. I thought i read somewhere on a thread that that wasnt accurate for the cg. The 4 7/64" puts it right behind the main spar. If it makes a difference the engine im using is the OS 46 LA. Any insight on this would be great. Thanks.
john
I balanced mine on mine on the main spar, of course I used my fingertips to replace the CG machine.
Just wondering how nose heavy are you? I have an OS .46 FX in mine and I had to move the bat up front just behind the tank.
You could try to replace the nose wheel with a foam wheel, that would save some weight. What did you do in the construction to have the nose so heavy? You are far better to be a bit nose heavy, but not so much that it is a problem in flight. Remember a nose heavy plane flies poorly, a tail heavy plane flies once.
Add a bit of lead weight to the tail and it should resolve your problem as well.
Good luck, it is a good little plane to start with, I have bashed mine around a ton and it still flies as well as day one.