Michael,

I am well aware of the limitations placed on Giant scale racing with regard to the distances etc... but nowhere in the documents that you pointed to do they mention anything about speed. It also appears that the majority of those regulations are placed upon the aircraft construction as well. Most of which no experienced modeller would ever attempt anyway, Nyrods on a giant scale racing plane?? There is no verbage to restrict the speed just make sure that your servos are a certain torque. And what happens if that is not sufficient? And who is writing the giant scale rules? The same antique bunch of rubber band twisters that are trying to regulate the jets.