Not being a scale competitor, I had to refer to the AMA rulebook. I didn't see any reference to model size only maneuver size. The reference is that a Cub shouldn't do the same diameter loop as a P-51. That said, there are always nuances not covered or out of date in rulebooks. Having the judges have that scale reference number could influence their perception. Judging is difficult in the respect that you can't let anything outside the flight you are witnessing influence the score. Example is what happened to me several years ago. I received some low scores on a couple maneuvers that included snap rolls. One judge scored me on average 6 points less then the other judge. Following protocol I brought it to the attention of the CD whom then brought the judge into the conversation. The judge stared off with " when I saw you flying your last round I thought your snaps were a bit slow ". Two things wrong with that statement, one he took a preconceived judgement to the chair and there is no criteria on speed of rotation during a snap roll.


Point is that you can math the crap out of this topic but to what end? You can have two people watch a model fly across the field and then have them guess the speed of the model, they won't have the same answer. The way the model is being flown should alter the perspective as well. A model being flown smoothly will give the perspective of flying slower then a model of the same speed being flown poorly.