RE: Propellers for Norvel engines
Before you make a final decision based on bench running, you might want to fine tune the performance based on actual use. Depending on the amount the particular prop will unload in the air, and the amount of drag presented by the airframe, actual performance may be different than on a bench. I would use bench figures as a starting point. Many have enjoyed the APC 6x2 and 5.7x3 for the .061 in the air. According to the old paperwork sent with early NORVEL engines, the .061 develops more power per ci as well as just more raw power than the .049, so don't expect to use the same prop on both the .049 and .061.
Of course these are just suggestions and opinions. The final choice, of course, is yours.
George