Hoping someone can help me understand the difference in these 2 blade types.
Building a -14 with a 200hp Angle Valve (-C1E6) - this has counterweights. I am also installing SDS ignition.
A HC-C2YR-1BFP/7496 has come up for sale locally.
The hartzell manual says this prop is approved for the 180hp 360 series parallel valve with no counterweights. Also with some restrictions when using electronic ignition “Do not operate above 22 inches manifold pressure below 2350 RPM. Operation above 2600 RPM limited to takeoff only.”
Only the 7497 is approved for the angle valve with counterweights. (And lists no restrictions but seems to have been tested with dual mags only).
Is the approval a hard and fast rule? Or the lack of the approval is simply because they haven’t tested it? Or would it be an ill-informed decision to use this prop on a counterweighted engine?
It would be about 9k cheaper.
Building a -14 with a 200hp Angle Valve (-C1E6) - this has counterweights. I am also installing SDS ignition.
A HC-C2YR-1BFP/7496 has come up for sale locally.
The hartzell manual says this prop is approved for the 180hp 360 series parallel valve with no counterweights. Also with some restrictions when using electronic ignition “Do not operate above 22 inches manifold pressure below 2350 RPM. Operation above 2600 RPM limited to takeoff only.”
Only the 7497 is approved for the angle valve with counterweights. (And lists no restrictions but seems to have been tested with dual mags only).
Is the approval a hard and fast rule? Or the lack of the approval is simply because they haven’t tested it? Or would it be an ill-informed decision to use this prop on a counterweighted engine?
It would be about 9k cheaper.
