Board Thread:General Nerf discussion/@comment-27306930-20181127000325/@comment-27306930-20181127054701

Only advantage that I know of is heat sinking. In general metal flywheel cages dissipate heat from the motors and allow them to run slightly cooler. Some argue this increases motor life, but I suspect it is totally dependent on the motors used and their standard operating range.

Otherwise the Aurora has everything going for it - strength, heat resistance, weight, cost. Plus, if for some reason you had to take a nibble or two from it, you can easily do that with plastic. Milled aluminum, not so much.

But do me a favor, before the day comes you decide to quit Nerf for good, buy yourself a milled flywheel cage. They are really awesome !