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MPG test data seems strange

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Old 04-26-2011, 09:24 AM
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Default MPG test data seems strange

Powerboat mag test data for 2003 Fountain 38 cruiser.

FUEL ECONOMY
At 25 mph ......0.8 mpg
At 35 mph ......1 mpg
At 45 mph ......1.1 mpg
At 55 mph ......0.6 mpg
At 65 mph ......0.9 mpg
At WOT ..........0.9 mpg

What happened at 55 miles an hour? Is this a normal thing?
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Old 04-26-2011, 09:28 AM
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If the steps started working a little better over 55 that is possible, that boat still has a lot of wetted surface at 55.
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Old 04-27-2011, 12:09 AM
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Quote:
Originally Posted by dodgeman111 View Post
Powerboat mag test data for 2003 Fountain 38 cruiser.

FUEL ECONOMY
At 25 mph ......0.8 mpg
At 35 mph ......1 mpg
At 45 mph ......1.1 mpg
At 55 mph ......0.6 mpg
At 65 mph ......0.9 mpg
At WOT ..........0.9 mpg

What happened at 55 miles an hour? Is this a normal thing?
Seems pretty normal.....know much about how boats and water work?
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Old 04-28-2011, 08:01 AM
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HAHA ! I figure I get more lift so therefore better mpg at higher speed. I was wondering why 55 mph would get less mpg than 45. I should be getting out of the water more at 55 than 45. But I somewhat understand. It just is !!
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Old 04-28-2011, 01:23 PM
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I wouldn't believe all those numbers unless they said they triple checked it. They are saying it used 72 gallons per hour at 65 mph and 92 gallons per hour at 55 mph. Sounds fishy to me???
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