Hello
Matt I totaly agree with you.
the most economical pattern is to make yourself as labor is not counted, with gas engine.
Sometimes weight is upper 5 kg. But in France serie Nat A and B (equal advanced and master) limit weight is 5,5 kg.
Finn
"A lighter plane fly better" !
I'm not sure, tank full or empty ; fly is the same with about 500 g difference.
Claude
On these patterns engine is RCGF32 very cheap !