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   Post on NR Propeller in KitFox General Forum

   By bcbushcaddy, posted 2 Jun 2019

   Hello, 
   Just installed a new shiny and beautifully crafted NR Propeller on a Kitfox 4-1200 powered by a Rotax 912 UL. It replaced a 72” 3 blade tapered Warp Drive. There has always been even with the WDP a bit of vibration on full idle especially at short final with the engine completely unloaded and the “wind milling” Propeller apparently driving (leading?) the engine. Now this has been drastically aggravated with the 2 blade NR. 
   Is anybody out there experiencing the same thing or a similar issue at final approach at full idle? The vibrations seem to increase proportionally with airspeed at full idle rpm. No issues once you add  a little power and load up the prop and engine.