RE: Revolver + Saito 115
to go fast you also need correct weight not over weight. i feel the 115 size 4 strokes are very heavy for this sized model and i bet you also have to add tail weight to get the cog right. my Revolver is powered by an OS 55ax and Jett Pipe, normal prop sizes in Australia are 11/x 6 or 11 x 7 apc type, i run a 10 x 10 . bye bye 115 catch me if you can.