Top/bottom roller shooter vs. bottom roller only

[gpetilli]

Originally Posted by JamesCH95

I vote for two-roller (NOT two-wheel) option as well for the reasons Don highlighted.

I think that rollers are more tolerant to ball variances than wheels are because they're wider (either in feed, density, compressibility, etc). Our two-roller shooter this year (and in 2006) was VERY consistent, to within less than a ball radius over 20-30ish shots in our short-range prototype being fed by hand (i.e. inconsistent feed) with 6 different balls.

My $0.02

What diameter roller and how much compression? We are looking at a hybrid with 1.75" roller and 1.5" compression. I am worried that we need to have more compression or risk the dreaded orange snow.