Board Thread:General Nerf discussion/@comment-27306930-20181127000325/@comment-27306930-20181130195836

Hah ! Nice answer Thiefy 😂

But seriously, when you upgrade motors and/or flywheels, the stock flywheel cage is often insufficient for dealing with the increased torque, vibration, and heat. Additionally, the design of a  flywheel cage determines the gap between the flywheels, and the resultant coefficient of friction "aka crush" on the darts. The crush factor is critical in overcoming the "glass ceiling" effect.

For example, Elite darts in a standard flywheel cage spaced at 43.5mm can never exceed 130 FPS no matter how big the motors or batteries. You'll need to increase the crush by replacing the cage with one that has closer spacing. At 42.5mm it will push the ceiling to about 150 FPS.

The other factor directly attributed to the flywheel cage is canting. A properly designed flywheel cage can induce spin on a dart and supposedly improve consistency. The jury's still out on how effective canting actually is. Personally, I like canted flywheels.

Of course factors such as the RPM of the motors, stall current, type of flywheel, type of ammo, and available battery current also have significant impact on max velocity. But in the end, it comes down to the design of the flywheel cage to make it all happen.