The props are designed for 5,500rpm (the November video is very misleading for other than STOL comp performance with its 6,000rpm talk as I set mine for 5,800 and performance dropped 10 - 12 knots; could not make 100 kts at WOT S&L where as the 5,500 rpm setting would make 108 kts) I don't understand why this is so as I thought the 5,800 Take off rpm would be the 98hp and 5,500 rpm is about 90 hp. Have today reset pitch for 5,500 rpm so will fly tomorrow and should be back to where it was.
The reason I set the rpm first was mainly due to always aiming for 5,500 to 5,600 rpm WOT S&L. The manual for E-Props said 5,500 rpm best and also said to set prop for 5,100 to 5,800 rpm static. This lead me to try it at 5,800 rpm. Big FAIL result; so just set for 5,500 rpm and leave there. 110% happy with the E-Prop and great value for money and good for 4,000 hours. Posted to share my experience; Cheers.