RE: Pattern weight rule - why?
Limiting the wing area is no less arbitrary than having a weight rule.........
Minimum weights in motorsport are a safety issue and not just cost based.
The rules for pertaining to an F3A ship are as simple as you can get in any form of motorsport and simpler than in most other areas of competitive aeromodelling.
There are already thousands of airframe/motor/radio combinations that fit the rules, it's just that they don't have F3A stamped all over them or are being used by the worlds best. I'm really upset my Oxai ship won't make 5kg (with cdi) even though for comps in Australia it's not an issue, however I try my best to comply with the rules for the spirit of things.