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Old 12-08-2012, 10:20 PM   #21
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Greetings,
I've heard it said that outboards use about 1gph per 10 HP at "full" throttle as a general rule of thumb.
That's the way it used to be "guessed'"....not sure after the 90's it remained all that accurate as outboards evolved quite a bit. But for 80s/90s motors...that was pretty accurate but hard to determine as not many like to run their larger outboards at full throttle long enough to get a good guestimate.
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Old 12-09-2012, 08:29 AM   #22
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Greetings,
Yup, my anecdotal "guesstimate" WAS based on 80s/90s technology and served to give one a rough idea of fuel usage/range. One could "assume" mileage would be better at lower throttle settings.
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Old 12-10-2012, 06:35 AM   #23
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Its the fact that its a GASOLINE fueled engine that creates the 10hp/gal .

The most modern direct injection (just like a diesel) GAS engine is up to about 13 hp /gal.

This comes with expen$ive maint and a computer controled everything.

Fuel , ignition, valve timing , all from the brain box.

Big advantage for a boater is light loads extend engine life.

Unlike a diesel.
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Old 12-10-2012, 10:04 AM   #24
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I have had a long history of owning gas powered boat both sterndrive and outboad but living with diesels for 5 years I would not consider anything but diesels now
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Old 12-10-2012, 02:09 PM   #25
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Mine is a slow boat from China.
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Old 12-10-2012, 07:06 PM   #26
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"Angelina" has two speeds: slow and stopped.
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Old 12-10-2012, 07:18 PM   #27
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All this talk about mpg or gph makes me sad. A trip up/down the ICW, or anywhere else aboard is priceless.
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Old 12-26-2012, 10:20 AM   #28
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All this talk about mpg or gph makes me sad. A trip up/down the ICW, or anywhere else aboard is priceless.
Oh, there's a price alright, my cruise in May cost about $1K in fuel plus some marina fees and meals, etc. But, that's well worth it for a 31 day vacation. Pretty hard to beat, I think. A lifetime of memories for two.

Slowing down not only saves fuel for most of us, but you get to see the sights along the way. If you're in a rush, drive or fly.

So my normal cruising speed is whatever 2,000 RPM gets me. It's 7 knots over water. On the AICW, that could be anywhere from 5 to 9 knots over land.

I'm thinking about a two month cruise next summer.
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Old 12-26-2012, 10:54 AM   #29
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I understand fuel cost do not seem like a big deal, but any of us on a shoe string budget cruising full time can tell you, all cost must be kept as low as possible or we may have to tie to the dock and god forbid get a , , a a JOB
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Old 12-29-2012, 04:06 PM   #30
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We generally cruise at about 7 to 7.5 knots, at 1650 to 1700 or so RPM.... I've found that to be the "sweet spot"...and she gets good fuel efficiency.....

Cruising along at that speed lets us see more and have a more relaxing day...... like these little critters: A momma otter and two pups.... on the Caloosahatchie not far from the big lake.

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Old 12-29-2012, 04:21 PM   #31
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Greetings,
Nice shot Mr. JAT. Interesting animals those mustelids...
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Old 12-30-2012, 12:57 PM   #32
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Greetings,
Nice shot Mr. JAT. Interesting animals those mustelids...
Thanks! I'm always surprised when I see them.... They have to be fast... we have too man gators in this state.... Momma was moving fast and I almost missed the shot!
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