Media Summary: Evo 7-77 test run with full gas conversion Finally, after two seasons, I took down and started my amazing beautiful 7 cylinder Gretplanes PT-17 Stearman , 7.5% nitro, 7,5% oil , 17x8 Xoar Prop.
Evolution 77cc Radial Test Run - Detailed Analysis & Overview
Evo 7-77 test run with full gas conversion Finally, after two seasons, I took down and started my amazing beautiful 7 cylinder Gretplanes PT-17 Stearman , 7.5% nitro, 7,5% oil , 17x8 Xoar Prop.