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Old 20 March 2007, 06:28   #11
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Country: Other
Town: Stanley, Falkland Is
Boat name: Seawolf
Make: Osprey Vipermax 5.8
Length: 5m +
Engine: Etec 150
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Quote:
Originally Posted by Biggles View Post
Stephen,

Don't want to depress you even more but we're talkin NMs here. Thats 1.2 normal miles to the NM. I don't know how to work it out Miles to litres but its got to be near 1.5 miles to the litre.
Sorry, so was I - didn't say NM. So I am still the same amount depressed

1.1515 recurring
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Old 20 March 2007, 08:57   #12
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Country: UK - England
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Boat name: Eighth Child
Make: Rib X
Length: 6m +
Engine: 150 E-Tec
Join Date: Jun 2004
Posts: 265
Thanks

Thanks for the figures guys. I think I am just as confused as before though.

Quote:
Originally Posted by UNIwatersports View Post
Hi Peter,

I can happily say that my Etec on the Rib-X 650 eXpert uses between 18 and 22 litres an hour when running at about 3000 revs and 25 knots.

I can happily go across to Cowes and back on under 25 litres, unless if i am being completely wicked with speeds!

I have calibrated my fuel flow meter, and i do tend to leave my fuel tank completely full, hence how i can come up with these figures and verify them.
Hmmmm...... On that basis I should have used about 30 ltrs not over 40 ltrs. It would be nice if the fuel flow meter on the engine actually worked!
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Old 21 March 2007, 09:40   #13
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Country: USA
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Boat name: Bouncy Pumpkin
Make: Avon Searider 5.4
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Engine: Evinrude 90 E-TEC
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Quote:
Originally Posted by Peter J View Post
Thanks for the figures guys. I think I am just as confused as before though.



Hmmmm...... On that basis I should have used about 30 ltrs not over 40 ltrs. It would be nice if the fuel flow meter on the engine actually worked!
Same boat? Same prop? Same load? Those are important variables to get a valid comparison. But if you're concerned, take the boat back to the Evinrude dealer and have them check it over...
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Old 31 March 2007, 17:15   #14
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Country: UK - England
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Went out Thurs did 30 nm which included northney marina out over the bar and back used 41lts that was a full tank before we left and a refill on the way home
so i am pleased.
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Old 31 March 2007, 17:42   #15
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As I continuously monitor my fuel usage I would like to add that my MPG has increased somewhat recently. Its now 1.1 NM per litre. I have noticed that I'm tending to using higher revs later. I used to keep it near 4000 rpm but now running a lot closer to 5000 rpm.

Next run I'm going to keep it nearer 4000 and see how that goes with regards overall speed and fuel usage.
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