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Main gearbox frame for the dual motor contra-rotating F3P power system.
Some of the photos show the frame with the two AP-03 brushless motors and the 3x6x2.5mm ball bearings for the inner shaft installed. However this item is obviously just the 3D printed frame. The motors are attached using 6pcs M1.4 self tapping screws. The bearings are a push fit, but can be secured with glue if desired.
Actual weight of the printed part is 2.47g (black strong and flexible)
For more info on the motor system, please see: