24' Glasply, Aluminum or Stainless.....?

AKJohne

Petty Officer 3rd Class
Joined
Mar 26, 2017
Messages
91
I have been running a aluminum 15.25 X 15P on this boat its done ok, but has acquired some dings and thinking about replacing and or upgrading.
24' boat 20 degree deadrise, 7-8K loaded, 5.7 LX, 1.47 Alpha 1 gen 2. Typical cruise at 3200 is 24-28 MPH, WOT is 4600 and ~ 38 MPH. none of these numbers are perfect but represents the typical trend's. I had a 16 X 16 aluminum and did ok but WOT was 40 MPH @ 4400 and that seemed low, had it repitched and now 33 MPH @ 4800. I think he went to far and not sure if its worthwhile repitching aluminum props. It was a experiment. Am I chasing ghosts or can I get some gains with a different prop. Also it typically requires some trim tabs as it is a narrow hull, drive is trimmed all the way in.. Thanks......!
 

AKJohne

Petty Officer 3rd Class
Joined
Mar 26, 2017
Messages
91
Not looking for speed, just good performance and economy, if that's possible, when I said "low" with the 16 X 16 I meant the 4400 WOT RPM might be on the low side, I had someone tell me recently that 4400 WOT is a good rpm for those motors.. thanks
 
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