Prop size and pitch 40 Albin

[Capttman]

My Albin 40 sundeck is running 22 inch props with 16 pitch. I have dual Lehman 135’s and I don’t seem to be getting the speed others claim to get at certain RPM’s so I’m wondering what other 40 foot owners are running for props and pitch.

[jleonard]

Have you calibrated your tachs with a hand held? If not then you need to before making any adjustments.
What is your current WOT rpm?
Edit:
For the record, I have a single Lehman 120, 2:1 tranny ratio. I am running a 20 x 16 4 blade prop.
"Normal" cruise speed is 6.5 to 7 knots at 1650/1700 rpm. My WOT rpm is right on the money at 2500.
I am getting similar speeds and economy to other 40 single engine boats that I have communicated with on the trawler forum.