Corrosion on my prop

M

Mike B

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Joined
Apr 23, 2011
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C Dory Year
2008
C Dory Model
22 Angler
Vessel Name
Remembrance
I'm winterizing my 2017 Yamaha 115 today and found that my propeller has a considerable amount of corrosion on the back that faces the engine. its an aluminum prop. Is there an anode I should be looking for. Everything else looks great, just the back of the prop that sits on that bearing. Thanks
 
A photo would be very helpful.. Are you leaving the prop in the water when the boat Is left in the water? What type of water are you boating in. Is a 110 volt AC system plugged in when the boat is in the water?

It could be Cavitation (Basically boiling water in a low pressure area-as opposed to "Ventilation" where air is reaching the blades of the prop because of improper flow or trim.

It could break electrolysis/or Corrosion.
 
I might have been something I did at the beginning of last season, I may not have tightened it down enough. I realize now it came off too easy. Time to get a torque wrench. I didn't take a picture, Its always raised out of the water when at the dock and a lot of time when its not running and there is no ac within 75 feet. Thanks for the reply.
 
Mike B":259abwet said:
I might have been something I did at the beginning of last season, I may not have tightened it down enough. I realize now it came off too easy. Time to get a torque wrench. I didn't take a picture, Its always raised out of the water when at the dock and a lot of time when its not running and there is no ac within 75 feet. Thanks for the reply.
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It is possible that if the distance from the hub perhaps with an improper thrust washer, could cause more turbulence and the lower pressure?

When you get a chance take a photo.
 
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