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Engine mount and frame bolts orientation?

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Well-Known Member
Dec 31, 2009
Barcelona, Spain.
Hi all!

Why in some airplanes the bolts that connect the engine mount to the frame, are sometimes positioned parallel to the crankshaft, and sometimes perpendicular? Is it because sometimes what matters the most are torque loads, and sometimes it is thrust? Are not both equally important? It is rare that the position of the bolts is not always the same.

Thanks a lot for your comments,