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Originally Posted by Gear
we chose single vertical wheel for the main reason being the straightness of the shot less arcs to predict. and after prototyping both styles found it more consistent
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Our prototyps revealed the same thing.
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Originally Posted by Al Skierkiewicz
We found early on that back spin flattened the trajectory giving better repeatability.
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We also found that the backspin was desirable in creating a trajectory that would score from both near and far positions.