- Joined
- Jun 12, 2014
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- 49
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I’ve been scanning threads throughout cyberspace for a definitive answer to the question of rotating motor mounts and the subsequent “disasters” that await the unwary. Since it is The RPIC’s responsibility to ensure the sUAS is Flightworthy before every flight it seems to me DJI has neglected to provide us with a critical indicia of flightworthiness, the proper angle for the motor mounts. Since they seem to be unwilling to provide it, I think we can get a decent idea by pooling our data and deducing that angle.
I propose we measure (in landing mode, not travel mode) the distance in millimeters between the surface on which the AC is placed and the outer tip of each of the two front propellers when the prop ends point to one another while being 90 degrees to the plane of the airframe. Ideally these measurements should be approximately the same. Any significant deviation from identical would be an indication that one of the CF tubes had rotated (either between the CF tube and the motor mount itself or, more likely, the entire CF tube has rotated at the “T” connector on the boom).
I am including photos of my bird for reference.
I propose we measure (in landing mode, not travel mode) the distance in millimeters between the surface on which the AC is placed and the outer tip of each of the two front propellers when the prop ends point to one another while being 90 degrees to the plane of the airframe. Ideally these measurements should be approximately the same. Any significant deviation from identical would be an indication that one of the CF tubes had rotated (either between the CF tube and the motor mount itself or, more likely, the entire CF tube has rotated at the “T” connector on the boom).
I am including photos of my bird for reference.
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