Seafari 25 performance

[cdavisdb]

Wow Denny, that's fabulous information. Thank you VERY much!

It looks like I can adjust rpm for max efficiency on the fly with a vac gauge, no matter the load.
Looks like 9 inches is near the magic number for me too, about 35-3600 with this load. Bahama trips are my main use of the boat and that means about 1000 lb over what I was carrying yesterday. I'm a little surprised the rpm for high efficiency is above 3400. That seems high to me, a lot higher than a carbed 5.7. Is that a function of fuel injection? Maybe that will change with higher load. One more question on vacuum guages: This one is on the end of what must be 25 ft of plastic hose. Does hose length affect reading?

The low planing speed hasbeen a huge advantage for me, although with the seafari, I won't need it as much. It is mostly the result of the duoprop, but my seabird would plane down to 11 knots, even with a heavy load. It had very wide tabs, which I liked a lot, and they may have had something to do with the low speed. I really hate the single stick control on the seafari tabs and will be changing to a two button soon. Also maybe wider tabs, when my budget recovers a bit.

On props, I will be getting another set, as soon as I figure out what size, and use these as a spare. My wallet howls every time I think about stainless volvo, but I run in shallow water, coral, etc a lot. Think I gotta do it.

Has anybody tried putting extra weight, lead, concrete, whatever, way up in the bow of this boat? The engine sits so low, 3-4 inches below what volvo recommends, that I worry about water intrusion, especially with the idiotic volvo placement of the flapper valves inside(inaccessible)the exhaust pipe. You can't tell if they are working or not. Mine were stuck when I bought it. I'm planning to install 2 inch spacers to raise the risers, but when 3 or 4 guys gather in the stern, the boat sits very very deep. Maybe a couple of hundred lbs in the bow would help keep the stern from sinking so far. Might also damp the roll a little.

Thanks again.