ZMR 250 14mm Spacer with Vents

This was a great model to start with, but I thinned the front bumper so it doesn't interfere with screws, deepened the gaps for the wires to pass through to give a little extra room, and added some angled vents to pull air in around the ESC's and PDB.

After talking with an engineer I work with, I also changed the angle of the vents on the back half of the spacer. The vents are angled toward the front or rear props to catch some of the prop wash and direct the air over the esc's. This should