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Old 07 May 2009, 20:16   #11
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A modern version of the Evinrude V8 400hp 2 stroke would be ideal - they did one in the 1980s!!!
Fuel tank not included.
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Old 08 May 2009, 04:46   #12
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All the above can comment much better than me regarding fuel use etc but I'd be in favour of twins as the manoeuvrability is 10 times better.
Maybe a boat-handling course would be more cost effective?

Seriously though, on most twin-outboard RIBs the motors are too close together to be much use for manoeuvring anyway.
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Old 08 May 2009, 06:24   #13
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Originally Posted by John Kennett View Post
Maybe a boat-handling course would be more cost effective?

Seriously though, on most twin-outboard RIBs the motors are too close together to be much use for manoeuvring anyway.
Interesting enough, the rib that I did my L2 on had twins, the instructor was a big fan, said the boat was easier to manoeuvre...

That has been my experience too.

You're not suffering from EE (Engine Envy) Mr. K, by any chance?
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Old 08 May 2009, 21:34   #14
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What twins offer you though is a sense of safety as you have two engines
It doesn't bother me as there are no trees for about 1000 miles but what are the possibilities of hitting a log or similar in the water and trashing both engines at once? That seems to be one benefit of single + aux to me - at least you won't break the leg off the aux if you hit something solid?

My ideal boat would be twins too but I always wondered what the probability was of damaging both when they are relatively close together - whether its a rope, net, log or whatever.
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Old 08 May 2009, 22:28   #15
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It doesn't bother me as there are no trees for about 1000 miles but what are the possibilities of hitting a log or similar in the water and trashing both engines at once? That seems to be one benefit of single + aux to me - at least you won't break the leg off the aux if you hit something solid?

My ideal boat would be twins too but I always wondered what the probability was of damaging both when they are relatively close together - whether its a rope, net, log or whatever.

Bloody good point and one I hadn't thought of.

Also if a boat is swamped it could easily take out both engines - an aux could have a decent cover fitted until it was needed.
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Old 10 May 2009, 17:50   #16
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You're not suffering from EE (Engine Envy) Mr. K, by any chance?
Absolutely not. I've got two engines too!
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Old 10 May 2009, 20:04   #17
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Absolutely not. I've got two engines too!
So have I come to think of it. One 115hp and one 6hp
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Old 11 May 2009, 00:06   #18
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In open water, I'd prefer twins....powerful enough to plane on one of them... Can't do that with 6 hp. If you can't plane with one of the pair, big single and an aux.
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Old 11 May 2009, 04:40   #19
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Absolutely not. I've got two engines too!
Now now, if we include car engines, this is going to get silly
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Old 11 May 2009, 06:11   #20
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Maybe a boat-handling course would be more cost effective?

Seriously though, on most twin-outboard RIBs the motors are too close together to be much use for manoeuvring anyway.
Back at ya JK.
I've used an open boat with twins close together and they managed to spin the boat nearly on the spot like any other bigger twin screw I've used.
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