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Interesting!!!
How much static margin do you have??? Did you do a broad CG sweep in test flight to find "The Sweet Spot"?
Did you experimentally arrive at the incidence and thrust line??? |
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The CG range for this design from birth in 1993 when Curtis Pitts designed the airplane has always been 15%-28%MAC. We have test flown from 15% to 30% in the 2 seat model 12 aircraft. In the case of the python and Ti-12, we did not have to make tests with varied CG since I knew what to expect based on the 2 seater. The ti-12 will operate between 24-28% MAC throughout all its flight payload conditions.
The incidence and thrust values are all exactly as first designed in 1993 3 years prior to the first flight of the Curtis Pitts prototype model 12 in 1996. We have changed none of this throughout production of the airplanes and kits. This Model 12 design has the right combination of design elements to work very well. The airplane is big yet fast. Agile yet able mild mannered when needed.
RC models of the model 12 and variants are scattered in how well they fly. In most cases, the full scale model 12 has lower coupling than RC versions that have "fixes" built into the design. Quique's design seems to be the best handling of all the model 12 type airplanes. He made dozens of changes most of which even spot on RC designers have not picked up on. His design has coupling just about like what we see in the full scale python and Ti-12.