Ray K
Member
I'm looking at a 44 Sedan with QSC500s. The WOT rpms get up to about 2650 but the speed is only a little over 31mph (26.9kn). At around 2100rpm it's only doing around a little over 21.5mph (18.6kn). I think from all the review info I've looked at plus having driven a friends 44 Sedan recently the speed should be much better. Around 35mph (30.4kn) WOT and 25mph (21.7kn)at 2100. The boat was recently hauled and is clean with fresh bottom paint. Could there be an issue with the props? I thought that if the pitch was off it wouldn't reach WOT rpms, but it does. Could the props be off in such a way to still allow them to spin up to WOT but the thrust not being where it should be due to a few blades being off on both? The sync was off and one engine got about 30rpms more at WOT so they were close. I didn't drive the boat so I can't comment on whether it was trimmed out properly.