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Old 26 July 2010, 21:18   #1
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Country: UK - Scotland
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Make: Valiant DR490
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Advice
Is it possible to fit a 60hp mercury outboard on the back of an avon searider 4.0m which can take a max hp of 50?

Thanks chris
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Old 26 July 2010, 21:20   #2
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Oh yes, I had a 60 clamshell on mine, managed one run off with it as it was poorly. I now have a Yam 55 on it which goes well.
Just make sure your insurance is happy.
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Old 26 July 2010, 21:48   #3
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LOL - and have your aft sphincter checked for Retention Functionality.

That'll be one sporty rig
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Old 26 July 2010, 21:50   #4
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LOL - and have your aft sphincter checked for Retention Functionality.
Thought thats what drysuits were for.
Ask Bam Bam how quick mine is, not sure what his boat tops out at but mine was a few kts quicker.
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Old 26 July 2010, 21:51   #5
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I'll guess 36kts?
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Old 26 July 2010, 22:03   #6
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I wouldn't fancy going any higher than a 60hp, I did consider a ex-RNLI 70hp but was advised against it. Minimum hp for an SR4 is 50hp anyway....
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Old 26 July 2010, 22:07   #7
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i thought i would get away with a 60hp
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Old 27 July 2010, 00:21   #8
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how do you stop the chining? I used to have an SR4 with a 40 yammie 2 stroke on and started to chine walk at 28kts. Surely with more power your just going to chine walk more and more violently?
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Old 27 July 2010, 11:27   #9
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Quote:
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I wouldn't fancy going any higher than a 60hp, I did consider a ex-RNLI 70hp but was advised against it. Minimum hp for an SR4 is 50hp anyway....
errr shouldn't that say MAXimum?
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Old 27 July 2010, 17:39   #10
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errr shouldn't that say MAXimum?
no Chewy's wired up differently from you! Whether it was wise to recommend putting a 60HP engine on a SR4 to a guy who's still at school might be a different issue.
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