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Old 23 August 2011, 08:11   #1
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Country: UK - England
Town: Christchurch
Boat name: Woody
Make: Avon
Length: 4m +
Engine: Suzuki 25hp 4 stroke
Join Date: Nov 2010
Posts: 6
Stainless prop for Suzuki DF25

Hi All,

I'm thinking about putting a stainless prop on my Suzuki DF25 because I use it in Christchurch which is shallow and I often seem to find the bottom unintentionally.

As a separate issue, I had a problem with the engine going into limp mode when running flat out until I discovered that this was being caused by over revving which was in itself being caused by the prop size.

The engine is pushing a fairly light Avon Adventure 400.

So basically I have two questions please. Firstly what's a good prop size for the engine/boat combination and secondly where's the best place to buy a stainless prop please?

Cheers,

Paul
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Old 23 August 2011, 10:00   #2
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Country: UK - England
Town: Dorset & Hants
Boat name: Streaker/Orange
Make: Avon/Ribcraft
Length: 4m +
Engine: 50Yam/25 Mariner
Join Date: Apr 2007
Posts: 5,551
Hi paul, having spent the last 10 years going and out of Christchurch the advice i'd give is dont bother with a ss prop.....

You stand a good chance of buggering more than the prop if you hit somethinghard on the bottom. I would not expect much performance gain anyway.

For more advice go talk to mike in south coast marine up bridhe street or simon at ribs marine behind the council offices and they can guide on higher pitch and cost options.

Pete
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Old 23 August 2011, 11:39   #3
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Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
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You don't want stainless if you're finding the bottom with the blades.

SS is much stiffer; any impact of the blade hitting bottom is transferred to the prop shaft and gearcase. Aluminum will absorb much of the energy from the impact by deforming (yes, it means prop repair or replacement, but that's a lot cheaper than gearcase repair/replacement.)

jky
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