| 摘要 |
A method of manufacturing and/or providing a gearbox for rotating a propeller in a selected single one of a first and second direction is disclosed. The gearbox includes a many common components, selected irrespective of desired propeller direction, and a few unique components selected based on desired propeller direction. In one aspect the method includes casting a casing of the gearbox and machining the casing according to a selected configuration of the gear stages of the gearbox used to achieve direction of the propeller in the selected direction.
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