I have started to build myself a quadcopter and part of the build has been to mount the speed controller (ESC) to the frame. The controller has for ESC's built in but no mounting points to attach it to the frame. Using the existing mount points on the F450 frame I am using, I made this clamp/retainer to hold the ESC in place.I have included the SketchUP file for others to modify for thier frames - please upload your designs if you do use it for another frame!