Hiperbiper
Well-known member
OK; I'm ready to cover my wings and started looking at the rib attachment spacing on my bird...
As far as I can tell the previous covers used 2.5" in the propwash area and 4.5" on the rest of the wing.
However, AC43.13 lists 3.5" outside the propwash area as the max spacing for 129 mph vne. The Polyfiber manual uses the same graph.
Two Champs here on the field also have the wider spacing...
I'm not seeing any references to covering in the Aeronca Champ Service manual either.
I am confussed... . Where is the Official Okey Dokey for the 4.5" spacing coming from?
Chris
As far as I can tell the previous covers used 2.5" in the propwash area and 4.5" on the rest of the wing.
However, AC43.13 lists 3.5" outside the propwash area as the max spacing for 129 mph vne. The Polyfiber manual uses the same graph.
Two Champs here on the field also have the wider spacing...
I'm not seeing any references to covering in the Aeronca Champ Service manual either.
I am confussed... . Where is the Official Okey Dokey for the 4.5" spacing coming from?
Chris