|
|
04-10-2015, 06:47
|
#16
|
Moderator Emeritus
Join Date: May 2008
Location: Fort Lauderdale, FL
Boat: 48 Wauquiez Pilot Saloon
Posts: 5,975
|
Re: Zinc, Anodes, & Electrolysis….Huh? :)
Quote:
Originally Posted by Dave Lochner
|
Read the same article in PB, and they give a fairly decent argument for aluminum use in freshwater... Going against convention and known performance is a tough road when putting yours or someone else's running gear on the betting line...
__________________
In the harsh marine environment, something is always in need of repair...
Mai Tai's fix everything...
|
|
|
04-10-2015, 06:47
|
#17
|
Registered User
Join Date: Nov 2013
Location: Homeport: Fair Haven, NY
Boat: 1993 Sabre 362 #113
Posts: 608
|
Re: Zinc, Anodes, & Electrolysis….Huh? :)
No, because the zinc and magnesium would eat each other up.
If you sail in both fresh and saltwater, use aluminum. Aluminum will work as well or better than zinc in saltwater and will work in freshwater, although a little less well than magnesium.
Found this company that has a decent explanation of the need for anode protection and the various types of anodes.
Anode FAQs
|
|
|
04-10-2015, 06:52
|
#18
|
Registered User
Join Date: Nov 2013
Location: Homeport: Fair Haven, NY
Boat: 1993 Sabre 362 #113
Posts: 608
|
Re: Zinc, Anodes, & Electrolysis….Huh? :)
Quote:
Originally Posted by HappyMdRSailor
Read the same article in PB, and they give a fairly decent argument for aluminum use in freshwater... Going against convention and known performance is a tough road when putting yours or someone else's running gear on the betting line...
|
Maybe that's why too many freshwater boaters still use zincs, because, well you always put zincs on your prop shaft, right?
A while back the local West Marine store, well inland in New York, only sold zinc anodes, no magnesium or aluminum. The nearest salt water is several hundred miles away. Go Figure.
|
|
|
04-10-2015, 06:54
|
#19
|
Writing Full-Time Since 2014
Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32/34
Posts: 9,569
|
Re: Zinc, Anodes, & Electrolysis….Huh? :)
Quote:
Originally Posted by Trident50
Again, tons of information on this, but I can't find any in "English", it all seems to be written in "Engineer", so if anyone has a good link to share, or if this is not as complicated as it seems to be to me and it can be explained here - as if I were a not so bright 5 year old? - I would appreciate any guidance!
Thank you all and be well!
Rob
|
High School chemistry, man.
Zincs, cleaning compounds, fuel additives, tank odors.... It was all there, but we assumed we would never use it....
|
|
|
04-10-2015, 07:03
|
#20
|
Writing Full-Time Since 2014
Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32/34
Posts: 9,569
|
Re: Zinc, Anodes, & Electrolysis….Huh? :)
Quote:
Originally Posted by Dave Lochner
Maybe that's why too many freshwater boaters still use zincs, because, well you always put zincs on your prop shaft, right?
A while back the local West Marine store, well inland in New York, only sold zinc anodes, no magnesium or aluminum. The nearest salt water is several hundred miles away. Go Figure.
|
That's funny. Same with the Wes Marine in Washington DC; they had not heard of aluminum.
Regarding Al vs. Zn, even in salt and brackish, it is not just about the environment. Aluminum is different (more electron capacity, better protection, not as easily inhibited by carbonate, attracts more marine growth), and which is functionally better is still up in the air. I've got about 25 corrosion samples soaking right now, ocean and Chesapeake.
I will say that all of the serious damage in the Chesapeake is due to factors other than aluminum or zinc (no anode, wiring faults, etc.).
|
|
|
04-10-2015, 07:07
|
#21
|
Moderator Emeritus
Join Date: May 2008
Location: Fort Lauderdale, FL
Boat: 48 Wauquiez Pilot Saloon
Posts: 5,975
|
Re: Zinc, Anodes, & Electrolysis….Huh? :)
Quote:
Originally Posted by thinwater
High School chemistry, man.
Zincs, cleaning compounds, fuel additives, tank odors.... It was all there, but we assumed we would never use it....
|
I know right????
daaaaang... If I'd only paid more attention in HS chem.... I'd be cruising right now.... on an 80' swan...
__________________
In the harsh marine environment, something is always in need of repair...
Mai Tai's fix everything...
|
|
|
04-10-2015, 07:12
|
#22
|
Moderator Emeritus
Join Date: May 2008
Location: Fort Lauderdale, FL
Boat: 48 Wauquiez Pilot Saloon
Posts: 5,975
|
Re: Zinc, Anodes, & Electrolysis….Huh? :)
one of the arguments for Al is...
I've owned a shiznit ton of IO ski boats with Al outdrives.... (stinkpotter saildrive) meant for lakes obviously.... All as far as I can remember, all protected with an Al anode ... on Al...
__________________
In the harsh marine environment, something is always in need of repair...
Mai Tai's fix everything...
|
|
|
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Rate This Thread |
Linear Mode
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
Advertise Here
Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
Vendor Spotlight |
|
|
|
|