Its still early days with the Mini Sprint as ive only run 5 2200mah batteries worth of run time,I normally get with this set up around 2.5 minuites run time & put around 1700mah back in the pack on recharge.Ive had the boat running a bit faster than in these vids when i ran my Octura x632 detonged & had the esc pwm set at 16 khz but decided to turn things down a notch.The prop in the vid is an Octura x435 sharpened & balanced which measures closer to 34mm diam detonged & back cut to 15 degress, PWM in the vids is set to 8 khz. These are great little boats which puts a huge grin on your face when you run them & a big thanks to all that worked on the design,testing,& prodution of these boats. Martin.