Comparisons, Upgrades, Extreme Heavy Duty, FPV Satellite Speedruns and calculating gearing for speed8:43 BL2S 2S Speedtest11:44 BL2S 3S Speedtest17:41 Ultimate 2S Speedtest21:30 Ultimate 3S Speedtest25:16 Ultimate Gearing Spreadsheet25:45 BL2S Gearing Spreadsheet