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Old 22 March 2004, 09:59   #1
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Litre per hour 115 / 150 Avon 620

Can some one give me a rough idea of the litres per hour that the following will burn ( I have tried a search but no luck)

Avon 620

Mariner 2 stroke 115
Mercury 4 sroke 115
Yammaha 150 Vmax

I have 3 boats to look at this weekend which have the above and am trying to do a little research. At the moment I am heading towards the 4 stroke 115.

Any views would be very welcome

Alternativly I am looking a mark pascoe ribs 8.2 (I know very different) or similar but am finding it hard to find a second hand one anyone know of any for sale



Thanks
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Old 22 March 2004, 13:50   #2
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Country: UK - Wales
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Boat name: Delta 1
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Length: 6m +
Engine: Mariner 90hp Optimax
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We ran a 620 with a 150 opti and a 560 with merc 90 4 stroke - both used about 1 litre an hour on average in most conditions.

Hope this helps, please dont quote me on this if you run out of fuel
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Old 22 March 2004, 14:21   #3
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Country: UK - Scotland
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Boat name: Seafari - VHF CH 71
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Quote:
We ran a 620 with a 150 opti and a 560 with merc 90 4 stroke - both used about 1 litre an hour on average in most conditions.
Is that all?? or have you missed a figure out?? i think my 2 hp yamaha uses more than that.

Pete
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Old 22 March 2004, 14:25   #4
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Extraordinary fuel consumption!

I think he missed more than 1 digit!
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Old 22 March 2004, 14:40   #5
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I would hope so, if not i would like to order a few of these for the boat.

Maybe engines are just much more fuel efficient in wales?
Is the air thicker, or thinner there?? - or do computers just have the letter 1 on the keyboard?

Pete
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Old 22 March 2004, 17:07   #6
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A litre a mile possibly?

John
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Old 22 March 2004, 17:25   #7
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We run a Suzuki 4stroke DF115 on a Ribcraft 585 and use just under a litre/mile at 20-25knts
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Old 22 March 2004, 20:27   #8
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Stunning fuel use

Quote:
A litre a mile possibly?
so lets say -- 25 knots = roughly 25 miles in an hour?
1 litre per mile = 25 litres usage of petrol

therabouts, 25 litres an hour?? = 5.5 gallons an hour?


Sorry my 2 hp Yam does not use that much,,,, but the 130hp (ex daniels boat) does. ---- that sounds more like it...

Pete
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Old 23 March 2004, 02:26   #9
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That was turned off by the way.

Sorry it was a long day-1 liter per mile
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Old 23 March 2004, 02:53   #10
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Interestingly everyone said i should expect a litre per mile from my Optimax (150), which after owning the Yammie v4 i was quite excited about (sorry pete )... but i am experincing far better than that. Average on a long distance cruise (allowing for some 40knts+ sections) seams to be 1.5nm per litre.

Even given this weekends extreme weather, lots of throttle working and full chat up southampton water my average has come out as 1.4nm per litre.

We've put 30 hours on the engine now and total fuel consumption is about 400litres, thats 13li /hr.

Now no smart comments from smelly diesel owners please.

A little irrelivent i know, but possibly helpful in your quest. You could make a far worse decision than an optimax. (edit: there isn't one on your list! Even more irrelivent then i guess, so i'll try and add some useful comments below)

I beleive the 115 4-stroke is the best of the bunch here. Reasons: lower running costs, higher resale value and desirability, quiter, smoother running.

You need to find out if the Yammie 150VMax is a HPDI engine or not. It'll go well regardless, but unless you have shares in an Oil company steer clear unless it IS an HPDI engine.

The 2-stroke (i assume conventional technology) 115 will also drink fuel at an alarming rate, so this boat would need to be several thousand beer tokens less than the 4-stroke to attract you, or a future customer me thinks.
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