Standard Motor Mount for 12mm tube frames. There are three different mounts, all for 12mm OD tubes: From weakest to strongest: Short two-piece clamp mount. Long one-piece clamp mount. Long set-screw mount. I've found the set-screw mount to be the only one reliable enough for my larger (8" prop) quadcopter applications, but YMMV. | Download free and paid 3D printable STL files
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