2 wheels vs 1 wheel in a linear shooter

[F22Rapture]

Originally Posted by Slartibartfest

If you wanted a long time for contact in a linear shooter couldn't you use a belt instead of a wheel?

Theoretically yes, but practically no. A few people have tried it and had serious issues with it.

[Unbound]

We are using two wheels in our shooter one to give the disk a spin and the other to propel the disk forward.

[Ether]

Originally Posted by Unbound

We are using two wheels in our shooter one to give the disk a spin and the other to propel the disk forward.

How does the first wheel spin the frisbee without propelling it forward?

And how does the second wheel propel the frisbee forward without adding additional spin?

Could you post a picture?