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Old 13 April 2015, 16:44   #1
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Oversized outboards

I'm looking a several used boats, one or two of which have a bigger engine than the maximum suggested by the manufacturer.

Assuming the engines all weigh the same, what would be the effect of having an oversized engine on the transom?

I realise that an engine with too much power will affect the handling with a light bow.

Thoughts?
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Old 13 April 2015, 17:02   #2
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Insurance ??????????
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Old 13 April 2015, 17:11   #3
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To me the biggest issue is not handling / weight etc it's your insurance. No insurance company will pay out if they find out the boats max engine size has been exceeded. Surely it's not worth the risk especially if someone gets injured.

That said I am sure a few extra horses will not effect the transom but too much will effect the handling and stability of the boat.
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Old 13 April 2015, 17:28   #4
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Quote:
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No insurance company will pay out if they find out the boats max engine size has been exceeded.
This is something that is often said, but do we know if it's actually true?

I know we've got some insurance companies represented here, maybe they'd like to comment?
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Old 13 April 2015, 17:34   #5
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[QUOTE=chriswood;67369No insurance company will pay out if they find out the boats max engine size has been exceeded. Surely it's not worth the risk especially if someone gets injured.


Its certainly a cast iron case if they don't want to pay out me thinks.
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Old 13 April 2015, 18:17   #6
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I've got no CE plate on my RIB and all my insurance company seem to be interested in is that your vessel mustn't exceed 48 knots.
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Old 13 April 2015, 19:01   #7
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Yes 50 knts seams a key cut off for production / leisure (cheap) vessel insurance.

Thankfully most ribs are not capable of speeds in excess of this.
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Old 14 April 2015, 05:48   #8
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Even prior to the days of "CE plates" (yes I'm old enough to remember that) most boat manufacturers would still provide a maximum HP rating for there boats and there is a standard calculation that used to be used to work out the size but that would produce figures about half what we see today. However an ignored CE plate is all the excuse an insurance company would need.
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Old 14 April 2015, 05:51   #9
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I think Maximus has got around this on his last couple of ribs, he maybe the man to ask
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Old 14 April 2015, 06:25   #10
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I think Maximus has got around this on his last couple of ribs, he maybe the man to ask
I use Craft insure and they regard 50 knots as the defining limit...and not engine size.
And yes you can have it in writing
There are a few threads posted up already were this has been gone into in more detail
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