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25 March 2010, 13:07
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#61
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Member
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,299
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Quote:
Originally Posted by willk
My rib make about 2-3kts with the engines just in gear - it can't be burning much gas at those revs. I think
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But it's not going far either!
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25 March 2010, 20:29
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#62
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Member
Country: UK - England
Town: Gloucestershire
Boat name: Osprey
Make: Osprey Vipermax
Length: 5m +
Engine: E-tec 300 G2
MMSI: TBC
Join Date: Dec 2006
Posts: 4,021
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Quote:
Originally Posted by Ian M
Definately the weakest aspect of Ospreys
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Really mine are fine ! my last Osprey had 12 year old Europcraft tubes and they were fine too !
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Chris Stevens
Born fiddler
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25 March 2010, 20:35
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#63
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Member
Country: UK - England
Town: Gloucestershire
Boat name: Osprey
Make: Osprey Vipermax
Length: 5m +
Engine: E-tec 300 G2
MMSI: TBC
Join Date: Dec 2006
Posts: 4,021
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Quote:
Originally Posted by BogMonster
One question for Etec owners, particularly Vipermax ones, what sort of fuel economy (litres per nm) do you get at displacement speed, steady cruising (20-25kt) and fairly near flat out? Just so I know what I am looking at - running costs are an issue.
Thanks
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At "trolling" speeds the E-tec is extremely good on fuel running at about 1.2 litres per hour
At 6-7 knots I am seeing about 7 litres per hour
At 20knots about 18 litres per hour
At 30 knots about 30 litres per hour
At 40 knots about 48 litres per hour
At 44 knots about 55 litres per hour.
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Chris Stevens
Born fiddler
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26 March 2010, 01:13
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#64
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Member
Country: Other
Town: Stanley, Falkland Is
Boat name: Seawolf
Make: Osprey Vipermax 5.8
Length: 5m +
Engine: Etec 150
Join Date: Mar 2006
Posts: 3,726
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Quote:
Originally Posted by Chris
At "trolling" speeds the E-tec is extremely good on fuel running at about 1.2 litres per hour
At 6-7 knots I am seeing about 7 litres per hour
At 20knots about 18 litres per hour
At 30 knots about 30 litres per hour
At 40 knots about 48 litres per hour
At 44 knots about 55 litres per hour.
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Just what I needed to know, ta
A little more than I had hoped but the 20-30 knot bracket is not too bad - better than my old 2 stroke anyway though I suspect a Destroyer with a Zook 4 stroke would use less but then so might a 5.8 Vmax.
Still you gets what you pays for
__________________
A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...
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27 March 2010, 12:40
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#65
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Member
Country: UK - England
Town: Gloucestershire
Boat name: Osprey
Make: Osprey Vipermax
Length: 5m +
Engine: E-tec 300 G2
MMSI: TBC
Join Date: Dec 2006
Posts: 4,021
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Quote:
Originally Posted by BogMonster
Just what I needed to know, ta
A little more than I had hoped but the 20-30 knot bracket is not too bad - better than my old 2 stroke anyway though I suspect a Destroyer with a Zook 4 stroke would use less but then so might a 5.8 Vmax.
Still you gets what you pays for
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I would be suprised if you did not see quite an improvement over those figures with a 5.8 .
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Chris Stevens
Born fiddler
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27 March 2010, 21:00
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#66
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Member
Country: Other
Town: Stanley, Falkland Is
Boat name: Seawolf
Make: Osprey Vipermax 5.8
Length: 5m +
Engine: Etec 150
Join Date: Mar 2006
Posts: 3,726
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Yes I hope I might see a bit of an improvement.
Having thought about it a bit more, I think I am going to have to spend the extra and get the 150 just for the "yeeha" factor I reckon the extra ccs will be worth more in terms of torque and response than the 20hp difference would suggest and a 2.6L V6 producing 150hp has to be less stressed . Never even seen an Etec, so just guessing, it will be the first one here
I think what used to bog me off with the Johnson is that sometimes it seemed to use nearly as much fuel at idle as it did cruising.
The next six months is going to be such a long one, especially since we now seem to be getting a summer at last - a week after I sold the boat
__________________
A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...
Sent from my Computer, using a keyboard and mouse
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27 March 2010, 21:06
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#67
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Member
Country: UK - England
Town: Mighty Penryn
Boat name: Little Joe.
Make: Avon Searider
Length: 4m +
Engine: Honda BF50
Join Date: Aug 2005
Posts: 8,875
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Stephen, what's the 'crumpet' situation like in the Falklands? I can't imagine that the watefront is chocker with hot young choo choos waving as you go by in your new shiney Vipermax.
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27 March 2010, 23:46
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#68
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Member
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,866
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Quote:
Originally Posted by Mollers
Stephen, what's the 'crumpet' situation like in the Falklands? I can't imagine that the watefront is chocker with hot young choo choos waving as you go by in your new shiney Vipermax.
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I hear that they have even more attractive looking sheep than in Wales
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Andy
Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
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28 March 2010, 00:01
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#69
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RIBnet admin team
Country: Ireland
Length: 4m +
Join Date: Feb 2008
Posts: 14,910
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Huh! Where there's folks, there's chix
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28 March 2010, 02:26
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#70
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Member
Country: Other
Town: Stanley, Falkland Is
Boat name: Seawolf
Make: Osprey Vipermax 5.8
Length: 5m +
Engine: Etec 150
Join Date: Mar 2006
Posts: 3,726
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Quote:
Originally Posted by Mollers
Stephen, what's the 'crumpet' situation like in the Falklands? I can't imagine that the watefront is chocker with hot young choo choos waving as you go by in your new shiney Vipermax.
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No, not really sorry it is an entirely selfish purchase, just cos I want one
The Mrs wants something with a roof but all options are either too expensive or too boring ....
__________________
A Boat is a hole in the water, surrounded by fibreglass, into which you throw money...
Sent from my Computer, using a keyboard and mouse
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