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Old 18 August 2014, 12:26   #1
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Country: UK - England
Town: london
Boat name: pluto
Make: scorpion
Length: 8m +
Engine: outboard 300hp
Join Date: Aug 2014
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Cobra Viper 4.2 won't plane

Hi,
I have just purchased a cobra viper 4.2m rib with a 30hp yamaha engine. It is approx. 3 years old and has 60 hrs on the clock.
The problem i have is does not seem to plane and goes along with its nose in the air. Also it seems that the back rhs tube is lower in the water. I would appreciate any views on this.
Thank you
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Old 18 August 2014, 15:12   #2
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Country: UK - England
Town: Taunton
Make: Ring 650
Length: 6m +
Engine: Outboard
Join Date: Jul 2014
Posts: 105
Hi have you got the engine trimmed up a bit ??? How many people do you have on board ??
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Old 18 August 2014, 15:25   #3
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Country: UK - England
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Leaky tube seam? Like HumberPaul?
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Old 18 August 2014, 15:48   #4
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Country: UK - England
Town: Southampton
Boat name: Hissing Sid
Make: Ross Smith Cobra
Length: 6m +
Engine: 200HP Optimax
MMSI: 235038046
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Does it have power trim? If not manually adjust the leg in and try it again. Quite low power but I would have thought it would manage to get on the plane.....
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Old 25 August 2014, 05:01   #5
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Country: UK - England
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Make: Fletcher 160
Length: 4m +
Engine: Mercury
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Have you made sure the hull is empty? I used a 6m with a 140 that the hull had filled with water & that wouldn't plane! It it took ages to empty & turned out to be a doggy bung.
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