Quadcopter landing gear 1306 motor 12mm hole pattern

These are bolt-on landing gear for a 130mm or larger quad using 1306 motors (or any motor with a 12mm mounting hole pattern). They add enough height below the chassis to strap an 850mAh 3s battery onto the bottom of the quad. Stretch them in the Z direction if you need more height...

As printed, the gear are too weak to use. They tend to break off below the ball in a crash.

To make them much stronger, ream out the center hole with a 1mm drill bit (or a #60) and glue in a section of 1mm