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Old 19 April 2014, 05:18   #1
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Country: UK - England
Town: Torpoint
Make: Avon Searider
Length: 5m +
Engine: Mariner 75hp
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SR 5.4 Mariner 75 prop

I'm looking to replace a fairly battered prop on my SR5.4/Mariner 75hp and curious as to what size/pitch other Searider owners are using with similar setups.
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Old 20 April 2014, 07:16   #2
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18" pitch vengeance stainless steel is the perfect prop for that set up.
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Old 20 April 2014, 07:16   #3
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Or a 17" black max ally prop.
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Old 20 April 2014, 07:25   #4
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Make: Valiant 450
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What RPM are you getting with your old prop, what were you getting? Go for a prop which will give you performance towards the top of the rev range.
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Old 21 April 2014, 04:15   #5
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No idea of RPM but a top speed according to my GPS of around 30 knots.
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Old 21 April 2014, 15:04   #6
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I would buy a cheap digital tachometer from eBay, the type that wraps around the top ht lead, it's difficult to choose the correct prop by guessing. Most 75 hp engines were supplied with a 15" prop as standard. I know that size works ok with a 75 two stroke yammie. A 17" wouldn't do any harm but I would find out what your starting point is.
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Old 21 April 2014, 15:32   #7
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Hi is this any good ? Click image for larger version

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