Area-51

Like the europa, the Sonex will eat most comparative aircraft in the sky. It has fantastic visibility from the cockpit, a strong +6/-4 spar and is nimble and responsive. It does not have the same level of stability as the europa, so it is great for aero's due to its inherent slight instability. I am told the Sonex can be tiring to hand fly long distances without an AP due to this; its an aircraft that requires to be piloted constantly while airborne... Both aircraft have their pluses and minuses... straight line they are about the same when using a 912/914. That being said the europa has a +12 ultimate rating on the spar, is highly nimble in experienced hands, and will do aero's quite comfortably if requested; but was purpose designed specifically for distance touring with short field capabilities.

Wing root flares would give the Sonex slightly better low speed and bank turn performance and capitalise on the low vortex wing tip design advantages. Fowler flaps would enhance stall speed performance. The factory canopy frame requires beefing up as well to prevent distortion and inflight departure.

All interesting comments.

My Sonex is a plans built Legacy (A). It features significant departures from a standard Sonex (B) ;

• Rotax 912ULS/Airmaster Constant Speed Prop
• 30L Wing Tanks + 40L Fuselage Header Tank (95-97 L usable).
• Tracey O'Brien toe brakes 
• Custom full swivel tailwheel
• Custom elevator trim wheel
• Custom engine cowling
• Cowl flap (off at the moment due to actuator issues)
• Solid riveted throughout
• Under seat storage 

I have researched "Wing root flares" - to date there is minimal/no documented advantage. This may be due to the design of those fitted or it might just be they will never have much benefit.

"The factory canopy frame requires beefing up as well to prevent distortion and inflight departure" Mine seems to be fine. Surprisingly little distortion (or have I adapted?) as for inflight departure - can't see that happening unless incorrectly latched. The only change I have made, is to use a clear polycarbonate rather than the factory supplied tinted.

"......its an aircraft that requires to be piloted constantly while airborne" True! however this was also true for my Zephyr. I have found that experince results in a level of intuitive handling, ie I don't seem to notice the near constant adjustments needed to fly straight & level, bit like riding a bike. One day I may fit an autopilot but for for now she flies just fine - planning a Sydney to Perth flight.

Do you have an Airmaster (or similar) prop? - I would like to compare management notes😈

Forgot I had already corresponded with you on this topic - You do have an Airmaster - Yet to be commissioned. Unfortunatly, for me, that makes me the experienced one - such is life. Still, if you have any thoughts on Airmaster management/fine tuning for best speed/fuel consumption, let me know.😈