Next was the turn of the Chimera 4, also on 4S batteries. Although a 4" frame I currently have 3" props fitted
Flight path taken below - the back and forth bit at the left was playing with someone’s dog who loves to chase it - the owner was in tears of laughter 
GPS CSV data
…giving a speed of…
Original BBL file is here if needed for verification https://cp162174.hpdns.net:2083/cpsess8459596021/frontend/paper_lantern/filemanager/showfile.html?file=BTFL_BLACKBOX_LOG_20220304_150505.BBL&fileop=&dir=%2Fhome%2Fmartinsm%2Fpublic_html%2Fmartin&dirop=&charset=&file_charset=&baseurl=&basedir=