I'm yust building my first park-flyer, which is Tiggie and I have some problems with it.

I prefer glow engines and so i don't have any knowledge abuot bateries Anybody knows how long can i stay in air with 7 1700mAh bateries, speed 400 engine with reductor (JETI i think) and plane with wing span of 850mm?

can i put in 2.5cm3 glow engine? (10mitutes in air arent enought, this is why i need some fuel)



BTW: which engine do you recommend (electric); speed 280 category or speed 400 or higher?


bye