Wayne.B wrote:
On Sun, 19 Aug 2007 17:37:40 -0400, HK wrote:

Wayne.B wrote:
On Sun, 19 Aug 2007 17:10:05 -0400, HK wrote:

Oh, it's not "too" bad, it's just more per hour than I like to burn.
I'll be working to find that sweet spot of around 25 mph and just under
6gph, if it is findable.
25 mph with only 60 hp?

I don't think so.

Say what?

At 6 gph the engine would be putting out about 60 hp, about 1 gph for
every 10 hp actually developed, same for most gas engines.

How fast would the boat go with a 60 horse running wide open?


Ahh, I had a feeling you were referring to the formulae, but you were a
bit oblique.

You did note I posted "I'll be working to find..."

According to a data sheet I have from the manufacturer, a fully loaded
boat just like mine with a 150 four cycle yamaha hit 25 mph on the nose
at 4000 rpm with a fuel burn of 7gph. That was with a pretty full fuel
tank (619 pounds), a full livewell (250 pounds of water), 130 pounds of
gear and 365 pounds of "guys" aboard.

I talked to the engineer who ran that test. He believes that with my
typical fuel load (half a tank, max, 310 pounds), nothing in the
livewell, et cetera, I can get close to 6gph at 25 mph. We'll see.

On Sun, 19 Aug 2007 22:01:55 -0400, HK wrote:

I talked to the engineer who ran that test. He believes that with my
typical fuel load (half a tank, max, 310 pounds), nothing in the
livewell, et cetera, I can get close to 6gph at 25 mph. We'll see.

Maybe if it's real light. I've run a 19 footer with a 90 horse. It
was OK with one person but not exactly a power house. With 3 or 4
people it really bogged down. A neighbor in FL has a 20 footer with a
135 on it. It goes pretty well but I doubt it would plane with half
that. Hard ride in a chop.

Wayne.B wrote:
On Sun, 19 Aug 2007 22:01:55 -0400, HK wrote:

I talked to the engineer who ran that test. He believes that with my
typical fuel load (half a tank, max, 310 pounds), nothing in the
livewell, et cetera, I can get close to 6gph at 25 mph. We'll see.

Maybe if it's real light. I've run a 19 footer with a 90 horse. It
was OK with one person but not exactly a power house. With 3 or 4
people it really bogged down. A neighbor in FL has a 20 footer with a
135 on it. It goes pretty well but I doubt it would plane with half
that. Hard ride in a chop.


Different boats perform in different ways.