4 Inch Foldable Quadcopter Frame

If you are using 1306 motors, print 4x the 'Longer arm' STLs.
Otherwise, for 130x or 110x motors, print 4x the '4 inch arm' STLs.

You will need 4x 20mm M3 standoffs, or 4x 25mm M3 standoffs to complete the frame. Either nylon or aluminium is fine. Plus, 8x M3 bolts for holding it all together.

The camera post STLs come in 20mm and 25mm heights, to match the standoffs.

The 'front bar' and 'rear bar' STLs are just for reducing flex, and are optional.

This frame was designed to take advantage of these amazing HQ props :
https://buzzfpv.com.au/hq-durable-prop-t4x2-5-grey

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