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Old 01 August 2005, 04:21   #1
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Country: Denmark
Boat name: actionboat Diablo
Make: Ravenribs
Length: 9m +
Engine: 2 x 350 SCI
Join Date: Dec 2004
Posts: 66
Verado's

I have always said 2 stroke instead of 4 stroke. But after been playing with the Verado for the last 2 mounth and 108 hours on water. I most say they realy do the job. I have 2 x 250 on a 9m RIB and are doing with 2 people in 64,7 kn/120,3 km. and with 14 people in between 53-57kn depending on weather. The silents of the engine when on water for the whole day
They use more fuel than the E-tec but no 2 stroke olie. end of day a little more expencive to ride, but i'm willing to pay that for the silents.

Best Jan

actionboat.dk
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Old 01 August 2005, 06:23   #2
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Country: Other
Town: Hayle, Kernow
Boat name: Spare RIB
Make: Narwhal
Length: 5m +
Engine: 130 Yam Outboard
Join Date: Mar 2005
Posts: 642
64,7 kn/120,3 km Jez

Shaggy
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Old 01 August 2005, 07:56   #3
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Country: Sweden
Town: Stockholm
Boat name: Osprey & Ring
Make: Osprey & Ring
Length: 9m +
Engine: Plenty
Join Date: Mar 2003
Posts: 860
Found this on internet, anybody has an explanation, i thought it was the same all over the world.

1 nautic mile = 1 852 meter
1 nautic mile in Great Brittain = 1 853,2 meter

64,7kn X 1,852 = 119,8244 km/h
64,7kn X 1,853,2 = 119,90204 km/h

Hm, the boats are faster in the UK
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Old 01 August 2005, 14:08   #4
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Country: Denmark
Boat name: actionboat Diablo
Make: Ravenribs
Length: 9m +
Engine: 2 x 350 SCI
Join Date: Dec 2004
Posts: 66
Quote:
Originally Posted by Petrov
Found this on internet, anybody has an explanation, i thought it was the same all over the world.

1 nautic mile = 1 852 meter
1 nautic mile in Great Brittain = 1 853,2 meter

64,7kn X 1,852 = 119,8244 km/h
64,7kn X 1,853,2 = 119,90204 km/h

Hm, the boats are faster in the UK
I have 2 garmin 192 one set on km/h. and one on kn/h. I most amit that I'm not looking down on them when sailing. I only read the max speed on them both after.

Petrov I have a small program call Tspeed it do matix on speed and slip of the props if you want I send it to you.
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Old 01 August 2005, 14:19   #5
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Country: Sweden
Town: Stockholm
Boat name: Osprey & Ring
Make: Osprey & Ring
Length: 9m +
Engine: Plenty
Join Date: Mar 2003
Posts: 860
Hi Jan;

Would love that program, do you still have my mail?
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Old 01 August 2005, 16:25   #6
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Country: UK - England
Town: Farnborough
Boat name: Eleven
Make: Arrow
Length: 8m +
Engine: 557cu, 700hp
Join Date: Jul 2003
Posts: 1,255
Here's 2 useful, underpublicised urls as well:
http://www.go-fast.com/boat_speed_predictions.htm
http://www.go-fast.com/Prop_Slip_Calculator.htm

(But they only work on hard boats. )
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Old 02 August 2005, 02:25   #7
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Country: Denmark
Boat name: actionboat Diablo
Make: Ravenribs
Length: 9m +
Engine: 2 x 350 SCI
Join Date: Dec 2004
Posts: 66
Quote:
Originally Posted by Petrov
Hi Jan;

Would love that program, do you still have my mail?
Petrov i can't find it. please send me a mail.

I try to uploade it but it's a exe file.
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Old 02 August 2005, 14:14   #8
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Country: Norway
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Hi, Actionboat! Is it so that you got new E-tech this year and already exchanged them for Verados, that was pretty fast. The Rude-dealer in our hometown, named Titek a/s, had taken out a 250 e-tech to use on his Zodiac 7.3m. The e-tech broke down after 3 months. He got a new motor for free right away! This could not have happened with your engine(s)?
Any problems with the much higher weight on the Verados vs e-tech? What propeller do you use to get this enormous speed?
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Old 02 August 2005, 16:14   #9
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Country: Denmark
Boat name: actionboat Diablo
Make: Ravenribs
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Engine: 2 x 350 SCI
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Posts: 66
This could not have happened with your engine(s)?
Any problems with the much higher weight on the Verados vs e-tech? What propeller do you use to get this enormous speed? [/QUOTE]

The E-tec I was using was test engines. But the Danish Evinrude did not want to suport me anymore. So I stop with evinrude. I try the Verado and like the eletronic gauge/trottle/steering. So now I'm working on towards having 3 boats with Verado's on. ( I'm selling the Scorpion )

The about 50kg pr/engine is not something that I see as big problem.
The boat is not fully trim so I recon that I can get maybe 1-2kn more out of them. I'm working on costum the legs of the engine.
For the speed I use hydromotiv prop's (When working use revolution4)

BR Jan
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Old 03 August 2005, 17:34   #10
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Country: Norway
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You keep on making me qurious! What ribs are you bying this time? It is always intersting to know what kind of rib a person with a lot of experence in though ribbing likes.
We do also have some ribs by no, and not every rib is as good as they should be. Right now we are putting together a new 29 Revenger. A similar boat has survived hard use for several years on the coast of Norway, so we are willing to bet our hard earned money on that one with twin Suzuki 250.
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