RE: BUSA Fokker DVII
I am using a 19-8 Xoar. I cannot tell you the RPM, but this size really woke up performance over the 20-6 props I was using. I think the Zenoahs like to turn up the RPM. I bet an 18" prop would be a good choice as well. To be honest, I would not put a G38 in another DVII. I feel mine is underpowered.