interesting. so in a 65mm shroud, on a 2350 4s, im getting the same rpm as the full 70mm, but at a loss of thrust im sure. im only at 750W and about 52A or so. thanks for posting those numbers! BTW, do you have the rpm numbers for the 2w 20 in the het fan? i know at some point you compared them..???
Originally Posted by The Don
This is what I tested in the 6904 fan.
4S3000 20C lipo: 41,500 rpm, 810 watts, 58.18 amps, 13.92 volts
4S4700 25C lipo: 44,000 rpm, 950 watts, 63.88 amps, 14.87 volts