Is there a rule of thumb for determining prop size / pitch for the greatest speed? I have heard that more pitch = more speed, but for the life of me the 8x4 that Charlie used at the field seemed faster than the 8x6 did. The little Norvel was SCREAMING, and hand-launching was an experience.
Perhaps the 8x6 wasn't letting the Norvel get up into the RPM range it likes?
Just a little confused on prop selection when it comes to these speed planes. All thoughts appreciated.
Brian