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Heliman
Location: West Carrollton, Ohio usa
| I have had this same problem from time to time. I noticed it became more of an issue when I bumped up to 850mm blades. What I have come to realize is, with these larger rotor diameters, there is considerably more twisting force feeding back through the linkage (compared to sport models). This becomes worse obviously at higher blade angles.
What this means is any linkage, swashplate or lever play, all the way back to the cyclic servos, that is more or less on one side (blade) verses the other will throw the blades out of track. It is all connected after all!
Spend some time getting rid of all free-play in your linkage. Hold the flybar in one hand and try to twist each blade separately and compare. Do this in the for-aft and side to side directions. If the free play is all gone or at least equal, your tracking problem will go away. That is unless you have another problem such as one blade grip much tighter than the other, a bad thrust bearing or paddles not aligned, bent axle and so on and so on ad infinitum. 
Wendell |
