propellers

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gotsaved

Seaman
Joined
Apr 11, 2003
Messages
53
i have a 1988 force 125 and i bought a ss prop on ebay.it is brand new.when i tried to put it on the only way it will go on is to remove the zinc anode.i don't know if this will hurt anything.i would like to know before i run it.
 
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FlyBoyMark

Ensign
Joined
Apr 14, 2002
Messages
934
Re: propellers

Depends..are you sure you can run that prop? Is the pitch and diameter whats called for on your particular application of weight and length? You can't jus pop on ANY prop that might fit and hope it works....If you have verified all this and can run a high pitch number, some outboards must have the trim tab removed because of the high rake angle of the prop or large diameter for a particular application. Don't load up or lug you engine...your asking for trouble...let us know more...read the dia. and pitch stamped on the the out side of the hub...<br /><br />P.S. There are flush zincs that install in place of the trim tab if you MUST do what your doing..
 
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sony2001

Chief Petty Officer
Joined
Mar 17, 2001
Messages
607
Re: propellers

I have the same engine. There are a few props where the mfg requires the anode to be removed. And check that you get good closure from the bolt and washer at the other end. :cool:
 
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gotsaved

Seaman
Joined
Apr 11, 2003
Messages
53
Re: propellers

i have a 13 x 17 prop.i had it on and it seems okay but i just want to be sure that removing the anode won't hurt anything.what is the anode for anyway?
 
G

gotsaved

Seaman
Joined
Apr 11, 2003
Messages
53
Re: propellers

i have a 13 x 17 prop.i had it on and it seems okay but i just want to be sure that removing the anode won't hurt anything.what is the anode for anyway? on ebay the guy advertised it for a 125 to 150 force.
 
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FlyBoyMark

Ensign
Joined
Apr 14, 2002
Messages
934
Re: propellers

They are made of zinc. In salt water and some fresh water the different exposed metals act like a battery in the water. This creates electrolisis or a plating or deplating of the metal on exposed surfaces. The anodes and cathodes prevent this and they themselves become "sacrificial". What is the pitch and diameter of your existing prop and what is the new one? Also need to know your rpm at WOT on the old prop AND what the red line is for your particular motor and the lower rpm part of the envelope at WOT.
 
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