If AMA had enforced the traditional FAI lid - 5 kilograms (11 pounds) and 10 cc (.61 cubic inches), they would not have brought this reasonable regulation upon themselves.
This campaign smacks of a typical NRA fun rasier: "Send us $500 today or they'll melt down all your guns."
Since we ARE talking about RC models as being the "culprit", Paul, the FAI limits are and have been much higher and for a very long time.
The FAI limits are defined in the Sporting code, section ABR. To quote:
"1.2. GENERAL CHARACTERISTICS OF MODEL AIRCRAFT
Unless otherwise stated, model aircraft shall meet the following general specifications:
Maximum flying weight with fuel 25 kgMaximum surface area 500 dm2
Maximum loading 250 g/dm2
Maximum swept volume of piston motor(s) 250 cm3 (My comment: A little over 15 cu.in.!)Electric Motors power source max. no load voltage 72 volts
Maximum total thrust of turbines 25kg (250 Newton)"
This has been true since at least 2003 (the oldest copy of the ABR that I happen to have).
Now for F2, each category has a maximum weight, with F2B and F2D set at 5 kilograms, F2C at 1/2KG, and F2A limited by wing loading. But for thos models where the FAA will be concerned (i.e., RC) the limit for the FAI is much higher.
As for AMA, the safety code states
"Not exceed a takeoff weight, including fuel, of 55 pounds unless in compliance with the AMA Large Model Aircraft program. (AMA Document 520-A)"
The maximum weights specified by that document are quite high! In mid-February, I received the following e-mail from AMA HQs:
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Large Model Aircraft Program
On January 25, 2011, AMA’s Executive Council (EC) approved an update to the Large Model Aircraft program. This program includes some significant changes.
One of the most prominent changes is the
weight increase to 125 pounds for prop-driven models (LMA) and 100 pounds for turbine-powered models (LTMA). There are four classifications referenced within the program: LMA-1, LMA-2, LTMA-1 and LTMA-2.
Another important change is that classifications LMA-1 and LTMA-1 (55 pounds to 77.2 pounds) will allow for a self-inspection by the owner of the LMA . It will require two demonstration flights in front of two observers. The owner can serve as one of the observers, as long as he/she is not the pilot of the model. The other observer has to be an AMA Contest Director (CD), Leader Member (LM) or Large Model Aircraft Inspector (LMAI).
As an LM or CD, you can reduce the travel time and coordination required of an LMA-1 owner. While it is a voluntary action, if you are asked to help with observing a test flight, it would be helpful for your fellow modelers and the AMA staff if you could accommodate the request. You would not be inspecting—just verifying that the test flight was completed successfully.
Classifications LMA-2 and LTMA-2 will require inspection by an LMAI, followed by demonstration flights observed by the inspector.
To review the complete program go to
http://www.modelaircraft.org/files/520-a.pdf.
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Regards,
Bill Lee