That kind of depends on how you've got it set-up now?
Pulling weight and turning more r.p.m.?
"Running faster" meaning flying the plane faster?
Those two don't necessarily go hand in hand.


I have used the APC 12.25 x 3.75 and their 12 x 4 props with a Tower / Aquacraft muffler running on 15% nitro...that is a strong combination (respectable for any .46 size engine )