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What makes the M14P such a durable motor for aerobatics?

aerobatics durable m14p motor
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What makes the M14P such a durable motor for aerobatics?

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———- Compared to a Lycoming, the M14P transmits very little propeller load to the crank. Being a geared engine, the propshaft and crankshaft are separate. The outer end of the propshaft is held by a 70mm ID ball bearing in the nose case. It carries most of the propeller radial load and all the propshaft end thrust. The inboard end is inside a sleeve in the end of the crank. There’s another ball bearing on the outside of the crank at that point, mounted in a plate separate from the main case webs and main bearings. That one carries propshaft radial loads as well as crankshaft end thrust. Crankshaft end thrust is minimal, as there is no propeller thrust load. It’s isolated by the drive spines on the outer rim of the planetary.

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