Don,
Could there be any reason, other than the throttle not opening 100%, that would keep my motor from reaching its optimal RPM range?
Terry looked at the flapper while I pushed down on the foot throttle and it is opening all the way. We have tried 5 different props and still can not get the RPMs any higher than 5760. I keep raising the JP, and it is at 3 3/8" below the pad. The rooster tail is just barely above the top of the cowl. The H2O pressure is still over 25 at WOT. Here are the best results from the props I have tried:
25 Fury............. 5410 & 64.3 MPH
27 Trophy (Just for kicks, we new it wouldn't turn it) 5180 & 64.7
25 Tempest #1..........5530 & 63.4
25 Tempest #2..........5540 & 64.7
24 Trophy.................5760 & 68.7