Originally Posted by
rcjetflyer0718-RCU
I have an Evolution 40NX in my sonic and it flies quite fast. Make sure the fuel you use for the 40 FP has plenty of castor oil and try a 9X7 prop.
That is good to know. I usually run Wildcat Premium Plus which has 18% total oil. The prop that was on the plane when I bought it was an 11x6.