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Old 28 January 2011, 10:05   #1
trd
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Country: Ireland
Make: humber
Length: 5m +
Engine: honda bf90
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Mariner 50hp

Hi every one, Ive got a humber assault, ive never had it out yet as engine is shot. I was offered a 2001 mariner 50hp 2 stroke to re engine it with and I was wondering what kind of speed would it do and whether it would be powerful enough for skiing and things? Thanks again,David.
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Old 28 January 2011, 10:21   #2
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Great engine, but probably not enough to push your >5m boat with enough oomph to use it for towing a skier or toys.

The same engine on a 4m SIB, now that would be entertaining.
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Old 31 January 2011, 05:24   #3
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Country: UK - Scotland
Boat name: Wildheart
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Engine: Merc 60 Clamshell
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I guess that depends how much >5m. Strictly speaking mine is in that category, but only just. Also as it;s an Assault the lesser V of the hull should get it on the palne with less grunt. Worst case - get a lesser pitched prop for the towing games.
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Old 31 January 2011, 16:11   #4
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I've used a 5m Assault with a Johnson 50hp on and it went fine and would happily tow a skier.
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Old 31 January 2011, 17:53   #5
trd
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Hey thanks for the replies, would a 90hp honda bf be too much for it? I think power and weight are kind of on the limit of whats rated for it. Sorry dont mean to change the topic from the title but just wondering.
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Old 01 February 2011, 04:08   #6
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Country: UK - Scotland
Boat name: Wildheart
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Engine: Merc 60 Clamshell
MMSI: 235068449
Join Date: Apr 2007
Posts: 4,610
That will depend what it says on the rating plate of the boat......

....and your definition of a hairy ride!


Just remember that if you have an aux you need to take it into account when totalling the weight
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