I would have to say an average speed at any given field on a Sunday would be around 70 mph. Yes there are airplanes that are capable of 200 mph but those are very few and far between. At your average club anything over 110mph is considered quite fast. Most stock built kits and ARFs will self destruct over 130 mph. Anything faster then that usually requires that the airplane be built capable of those speeds. Airframe strengthening, airfoil changes, streamlining ect.
As far as scale speeds are concerned, IMO most scale models are flown too fast. Take example of a 1/5 scale Cessna. The model can be flown around at between 40 and 50 mph. Most would actually fly it faster. Now doing the math, that 40 mph turns into 200 mph scale speed. Now that's a fast Cessna. The other side of that coin is a 1/7 scale F-16 being flown at 150 mph. That translates into 1,100 mph and that is more in line with the jet.
Last edited by speedracerntrixie; 07-31-2014 at 09:26 AM.