HI all, would a 9X7 APC grey prop, be too small for a .40
OS Max FP , this is for a twin plane , with 1 engine on each wing
according to top flites prop chart , these are too small . but these props were on plane when i got it . could it be since the plane is a twin engine, someone who owned it in past (no history on it)
was looking for more speed, hence the small props!