Thank you very much bchapman, argyris and ebrones. The video was done with phone, the quality is poor and without zoom.
Ebrones, The model is all balsa made from my drawings. Now over 500 flights. 9 minutes of flight is about 3.5 liters. It is easy to calcolate how much diesel I used !!!!
CFII1974: Yes, really beautiful sunset
Regatds


Damiano