Volo collaudo del Racing drone taglia 250. http://www.emporiodroni.com/it/multicottero-pronti-fatto-volo-collaudo/248-racing-drone-carbonio-tarot-250.html
Build with pics and more description, motor/prop test data etc starts here: http://fpvlab.com/forums/showthread.php?37954-World-speed-record-with-250mm-(or-under)-size-quad&p=736931&viewfull=1#post736931 First …