hi all, i have a tiger 1 and a pershing both heng long , when the tiger was in standard trim it would go through grass and up slopes , but my pershing struggles even on short grass the only difference in them is that the tiger has rx14 but the pershing has rx 13 , would that realy make that mutch difference ?
regards icemonkey

Big differemce in gearing ratios. look at the drive sprockets.