I was told that each inch of prop either increase or decrease = 200rpms. I am no prop expert but Julie at Throttle Up is. I would contact her to be certain but that is what she told me. They are great at what they do there.
New exhaust now hitting rev limiter
Just added thru transom exhaust. Tested it out this weekend and now I hit the rev limiter at WOT trimed up.
I would assume I just need to get a new hire pitched prop. I think my setup is a 454 non-mag with a 23p Mirage PLus. Am I on the right track?
I would assume I just need to get a new hire pitched prop. I think my setup is a 454 non-mag with a 23p Mirage PLus. Am I on the right track?
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I went from a 24 bravo - 26 bravo. saw 400 rpm difference.
19P SS to a 21P SS Laser and saw an initial 500 RPM in loss.
My info came from using a Mirage Plus, but appears to not be correct. I will have more info when I go through my prop switching, that what just what I was told. I am leaning towards a Bravo 4 blade hoping for some bowlift. I have none with my current 25 Mirage Plus.
Just an FYI a Mirage Plus provides more bow lift than a Bravo.23concept said:My info came from using a Mirage Plus, but appears to not be correct. I will have more info when I go through my prop switching, that what just what I was told. I am leaning towards a Bravo 4 blade hoping for some bowlift. I have none with my current 25 Mirage Plus.
Usually a 2" difference in pitch = 300-400 rpm as a "general" rule. But diameter, rake, number of blades etc all affect rpms as well. Plus every boat is different.
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