Here it is again, the ever so often discussion about prop sizing. I've read lots of info on this subject but I can't find the one piece I need.
My boat is propped properly - so I'm told - and achieves 4600 RPM @ WOT. However, except for the occasional whoppie moment when I run it up to full speed - 26KTS and 60GPM - I consistantly cruise between 2800-3200 RPM. At these RPMs the boat cruises 12-13 KTS @ appoximately .5/gpm. I think my hull is very efficient considering its top speed. Speed goes up quickly above 3200 RPM but then secondaries open and the fuel consumption rises even faster. So, what's the problem with over-propping the boat so WOT is say 4000 RPM or so? If I continue to run between 2800-3200 RPM won't I get and increase in speed which will result in better mileage? I know the engine will be working harder at the same RPMs but there should be some gain in gpm. no? --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/UnifliteWorld?hl=en -~----------~----~----~----~------~----~------~--~---
