The propeller mass weight inertia calculations

[Thruster87]

What is the maxium size + numbers of blades you can swing on a 503 or 582 with B box compared to C or E box. Seems there may be different answers from the prop manufacturers

 

Thepropeller mass weight inertia calculations and in-flight experience shows that this combination can safely spin either a 2 blade 68 inch propeller or a 3 blade 66 inch (IVO or GSC) when using the 2.58 to 1 reduction ratio[/b].] Cheeers