Software control or gearing

[Ether]

Originally Posted by nathan_hui

using the proper controller for a [linear] shooter wheel would improve the performance without the need for a second wheel

I haven't seen any videos of a successful linear shooter with only one wheel.

With a linear shooter, the frisbee has only a fraction of the contact time that a curved one does. Because of this, the acceleration in the linear shooter must be much greater to achieve the same exit velocity.

Beyond a certain acceleration, excessive slippage will occur, resulting in poor performance.

Adding a second wheel increases the contact time, reducing the required acceleration, and reducing the slippage.