Hello,
I got 9900 on APC 16x6 with the new Wildcat Youngblood 30% fuel. You should give it a try.
ORIGINAL: tIANci
My YS110 in my F90 will turn an APC 16x6 at 9,750 RPM with Cool Power 30% heli fuel ... not bad huh? Might get about 9,300 RPM with a 17x6 even ... hehehe