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Hookmaster

Stainless Steel Prop Vibration

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I just put on a stainless stell prop on my motor. It says there may be some vibration at low rpms. I have heard of this from someplace else. What would cause this?

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I would guess it's because a stainless prop is much, much heavier than an aluminum prop.

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The stainless prop also has a much more aggressive rake and cup. Which when in neutral will cause turbulance when the water spins it.

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I have a 150 yamaha with both 3 and 4 blade ss props. The 4 blade vibrates much more at idle speed than the 3, which I atribute to it being heavier. The 4 blade is a Mercury REV 4. I know Mercury makes a hub kit spacifically designed to eliminate this rattle (Flo Torq IV). My boat is a 2007 that was previously owned. The previous oner used the Flo Torq IV hub kit with the REV 4 prop and said it completey eliminated the vibration. I do not know what brand motor and prop you have or if the Flo Torq IV would work for you or not.

But, the vibration is from a heavy prop.

Matt

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I run a 3 blade SS on my 225 e-tec H.O., I tried a 4 blade and found alot more vibration as well as it being slower. Again it's the heavier prop, there is nothing when I started with the factory aluminum prop.

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