Encouraged by the big improvements in KE flight achieved with the test fuselage & fin fences presented in the previous posts, i built new ones and glued them on permanently. This time i made them longer, extending the fences on the canopy at the top and up to the motor cowl at the bottom. They are made of 1.5mm balsa, with carbon roving CA'ed along the outer edges and film covered. I put some transparent tape on the fuselage before attaching the fences with CA and canopy glue, so they can be removed later if necessary without damaging the fuselage covering.

The rudder power and fuselage lift in KE flight improved even more; as noticed before the fuselage needs a lot less incidence and rudder deflection in KE and the rudder power is just incredible. Knife edge loops, KE vertical 8s, KE triangles, they are all so easy to perform now, without ever needing full rudder deflection.

Compared to the canalizer tested earlier that influences the airflow only behind the canopy at the top of the fuselage, the fuselage fences are far, far more effective, obviously because they control the airflow over a much larger area, front and rear, top and bottom of the fuselage.

The test fences (the short version presented earlier, attached only to the rear fuselage) didn't induce any trim or mix changes, but the front part of the extended fences added just a little roll coupling in KE, probably because the bottom fences are a little longer. I added a few percents of rudder to aileron mix and now it tracks perfectly.