Johan has just finished his 40 hr proving flights and has applied for his full authority to fly.
Performance as described by Johan....:
"" We installed a second GPS and did another max speed test flying cross wind both directions. Both GPS's agree to the following: Max true speed (GPS ground speed) straight and level 5500 rpm = 220 kph. Cruise speed 5000 rpm = 210 kph
Economic cruise 4500 rpm = 190-200kph.
This morning we flew for one hour with a rev setting of 4300 at 160-170 kph level and measured the fuel burn = 10 liters ""
Amongst other tests Johan also took the aircraft to 260km/h in a shallow dive.
Although expensive it seems that the Rotax 912s may be the ideal engine for builders needing this kind of performance. The Express with 912s also seems to be an ideal aircraft for a flight school with its wide speed range, economy and robust construction.