What Prop you going to try? I have a 25P VMX and a 26PFXP by Turbo if you want to try either of them. Looking around on BBC boards, looks like most guys with the big rangers and 250s are running 25 or 26 pitch props and all running 70 +/- a couple of miles an hour depending on their load.
did you try the 4 blade on your 200?

