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Old 28 September 2009, 14:15   #1
Member
 
Country: UK - England
Town: lee on the solent
Make: avon
Length: 5m +
Engine: mariner 75
Join Date: Sep 2009
Posts: 14
which prop?

Hi,
I have recently purchased a 5.0m Searider with Mariner 75 engine.

The prop is pretty badly scored and mis-shapen. It is a 17" pitch and either a 12 or 13 inch diameter. The prop and engine were not originally matched to this RIB. Current top speed around 33kt in calm conditions.

My question is, does anyone have informaiton about what prop would suit this set up best? I am not interested in towing, but would like to be able to improve top end speed and fuel efficiency if poss. btw I do not have a rev counter so do not know how to judge 5700 rpm wot.
Any thoughts?
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Old 28 September 2009, 14:39   #2
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Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,298
http://rib.net/forum/showpost.php?p=278606&postcount=32

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