Props on RIBs
I've messed around with props before on Medium V fiberglass Centre consoles before, and ended up learning just how difficult good prop selection is, but I have ZERO experience on RIBs.
I'm guessing that given the lift provided by the tubes, lighter overall weight when compared to a similar size all GRP boat, perhaps when it comes to prop selection there are differences as well.
I've got a Merc 115EFI 4S on a 6m RIB that is currently running a 3 Blade Blackmax 17 and getting around 6300rpm trimmed out with a typical load (2 adults, 1 teen, 50% fuel) and I would say the previous owner has probably left this prop because he likes to run heavier loads with lots of people. (WOT is 5,800 to 6,400) so at circa 6,300 I can probably afford to run some more pitch.
A buddy has a Blackmax 19P, so that would be an easy swap but it likely to put me at 5,900 or there abouts which may be an issue if we run 6 adults and a couple of kids.....
But it's a Stainless Steel Prop that i am really after and it seems that from Merc it's the Laser II or Trophy Plus 4 blade as options (Vengeance is too bog std). I'm drawn a bit to the Trophy as the 4 blades should give me a good hole shot and mid range and I can prop move the engine up a bit.
Any experiences with the 115EFI and props that run well on a similar sized RIB?