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Mike B
Joined: 23 Apr 2011
Posts: 39
City/Region: Staten Island
State or Province: NY
C-Dory Year: 2008
C-Dory Model: 22 Angler
Vessel Name: Remembrance
Photos: Remembrance
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 Posted: Thu Nov 18, 2021 1:29 pm Post subject: Corrosion on my prop |
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| 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 |
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thataway
Joined: 02 Nov 2003
Posts: 20803
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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| Posted: Thu Nov 18, 2021 1:40 pm Post subject: |
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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.
_________________
Bob Austin
Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
KA6PKB
Home port: Pensacola FL |
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Mike B
Joined: 23 Apr 2011
Posts: 39
City/Region: Staten Island
State or Province: NY
C-Dory Year: 2008
C-Dory Model: 22 Angler
Vessel Name: Remembrance
Photos: Remembrance
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| Posted: Thu Nov 18, 2021 6:13 pm Post subject: |
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| 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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thataway
Joined: 02 Nov 2003
Posts: 20803
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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| Posted: Thu Nov 18, 2021 8:49 pm Post subject: |
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| Mike B wrote: | | 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. |
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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