ORIGINAL: Freddy

6 kg?.......no!
If we open that up the race for more power will continue.
5 kg + 1% tolerance we have now is perfect.
One really does not need more power than a YS170DZ.
Just keep challenging the manufacturers on how to get power out of smaller packages (glow, gas, electrical).
That is in line with current eco friendly green thinking and every bit helps save our planet.
Thank you FAI for keeping the sanity in F3A one of the best and longest standing rules ever written in Model Aviation.