I spent most of yesterday modifying my IMPACT to use 4 bolts to hold on the wings. The single bolt near the wing tube was allowing too much movement and letting the wing move and rub on the fuselage. I fitted the bolts like a pair of wing adjusters and took advantage of the moment to dial in some incidence to remove the current need for left aileron trims. The rear anti-rotation CF tube was removed as it was no longer needed,

I am using a mix-carb and had positioned the two servos for throttle and mixture control back at the rudder servo tray. The OS 1.60 was not as heavy as I thought it might be so these servos were moved to a location above the UC brace formers. The removal of the materials cancelled out the weight of the addition of the extra two bolts and ply plates.

After a dumb-half-hour-of-engine-not-starting I figured out that the mixture control servo was now using the other side of the servo arm and needed to be reversed!

With the engine running a tad rich the test flight was initiated. It went very well indeed. The reset aileron-trim was right on. I had raised the TE of the left wing a 3/32" and lowered the TE of the right wing by the same amount. The up and down lines were still straight with no rolling. The horizontal roll was funky and the nose raised itself when I applied aileron. A field session with two "Magic gadgets" and we had corrected uneven ailerons and poorly implemented negative differental. The instructions used mm's and I had used degrees. I finished up with 10 degrees up and 11 degrees down and no differential dialed in the radio aileron options.

It was all worth it. The new settings made it a lot more fun to fly. Straighter and much more axial. The wings had left no new marks on the fuselage sides and were very solid when used to handle the plane.

I would pronounce this plane now ready to fly in a competition, all we have to do now is wait for mid June in District-1 :-)

Regards,

Eric.