WELCOME TO RIVER DAVES PLACE

Fixing Aluminum Oxidation

FROGMAN524

Well-Known Member
Joined
Mar 16, 2013
Messages
2,474
Reaction score
3,154
Didn’t get a picture but the top caps on my SCX uppers have oxidized. The boat had a mercathode system and zincs. How can I fix this and prevent it again in the future?


Sent from my iPhone using Tapatalk
 

Racey

Maxwell Smart-Ass
Joined
Sep 18, 2007
Messages
16,461
Reaction score
25,106
Wax them regularly. Hard to say without oictures of how bad the oxidation is,

Regardless of an anode/cathode system raw aluminum will oxidize when placed in water
 

ToMorrow44

27 Advantage TCM 800efi
Joined
Sep 2, 2008
Messages
2,262
Reaction score
1,926
Water in the Colorado river is especially harsh on anything aluminum, it’s not a anode/cathode problem. Shark Hide may be your best bet, that’s supposed to be the shit for anything aluminum, but no idea how it holds up.
 

boatpi

Well-Known Member
Joined
Feb 28, 2012
Messages
5,048
Reaction score
5,140
Post a photo, we may offer a suggestion for a special level of anodizing
 

FROGMAN524

Well-Known Member
Joined
Mar 16, 2013
Messages
2,474
Reaction score
3,154
Alright I’ll snap some pictures today. Definitely not shiny like When I got them just very dull now after only being in the water 3 or 4 times.


Sent from my iPhone using Tapatalk
 

FROGMAN524

Well-Known Member
Joined
Mar 16, 2013
Messages
2,474
Reaction score
3,154
Ok here are the top caps I was talking about

IMG_4309.jpg

IMG_4307.jpg

IMG_4308.jpg



Sent from my iPhone using Tapatalk
 

FreeBird236

Well-Known Member
Joined
Apr 21, 2012
Messages
10,670
Reaction score
7,474
Ok here are the top caps I was talking about

View attachment 975054
View attachment 975055
View attachment 975056


Sent from my iPhone using Tapatalk
Looks like typical hardwater deposits from the river water, I see it on the black parts of the drive and transom as well. If you wipe down with something like Hot Sauce after every use it won't build up as bad. The condition it's in now I would probably use Lime-Away and then Hot Sauce and then wax.
Maybe also polish the aluminum after it's clean and before the wax.
 
Last edited:

boatpi

Well-Known Member
Joined
Feb 28, 2012
Messages
5,048
Reaction score
5,140
I sent an e mail to my mill,
Waiting for the best expert to respond.
 

MK1MOD0

Well-Known Member
Joined
Jun 4, 2019
Messages
1,355
Reaction score
2,067
Lime away works wonders to remove the scale. I’d use it on the out drive , prop rams ect. didn’t have to use it eve time, but just a few times a season.
 

FROGMAN524

Well-Known Member
Joined
Mar 16, 2013
Messages
2,474
Reaction score
3,154
Lime away works wonders to remove the scale. I’d use it on the out drive , prop rams ect. didn’t have to use it eve time, but just a few times a season.
Does the shark hide coating keep it from continuing to happen?


Sent from my iPhone using Tapatalk
 

Rotten deal

Well-Known Member
Joined
Feb 26, 2016
Messages
846
Reaction score
840
Just called. Brett says they’re anodized from the factory.


Sent from my iPhone using Tapatalk
I thought so and I’ve seen them due that before. Not sure if it’s just water or heat from drive doing that. Maybe water getting under anodizing? Did they say why they due that?
 

FROGMAN524

Well-Known Member
Joined
Mar 16, 2013
Messages
2,474
Reaction score
3,154
I thought so and I’ve seen them due that before. Not sure if it’s just water or heat from drive doing that. Maybe water getting under anodizing? Did they say why they due that?
He didn’t say but said only permanent solution is painting or anodizing them another color.


Sent from my iPhone using Tapatalk
 

02HoWaRd26

Well-Known Member
Joined
Dec 19, 2007
Messages
7,045
Reaction score
13,207
Lime a way in a spray bottle. Spray wipe anywhere you didn’t mean to get it then wipe from the parts. May take two or three goes but that’s just heat baking the water on the polished parts. Then hit with some good polish.
Then basically repeat the polishing as needed.
 

RiverDave

In it to win it
Joined
Sep 13, 2007
Messages
105,199
Reaction score
88,207
Try toilet bowl cleaner first and let us know how it works.. It's cheap and surprisingly effective.

RD
 

FROGMAN524

Well-Known Member
Joined
Mar 16, 2013
Messages
2,474
Reaction score
3,154
Ok I’ll try both of those and post back after I get some results.


Sent from my iPhone using Tapatalk
 

FROGMAN524

Well-Known Member
Joined
Mar 16, 2013
Messages
2,474
Reaction score
3,154
Clean all the soot off the transom while you are at it hahaha
Yeah that stupid scum line from the marina is hard to get off if you don’t get it right away. The hot sauce doesn’t work very well either after the fact.


Sent from my iPhone using Tapatalk
 

rrrr

Well-Known Member
Joined
Dec 19, 2007
Messages
10,140
Reaction score
17,070
Is the lime away acidic?


Sent from my iPhone using Tapatalk
Big time. Its pH is around 2. Household vinegar is a milder acidic cleaner, it's 5% acetic acid, pH is 2.7. Try it first.
 

Duck'ed_Up

Well-Known Member
Joined
Oct 16, 2014
Messages
956
Reaction score
849
Yeah that stupid scum line from the marina is hard to get off if you don’t get it right away. The hot sauce doesn’t work very well either after the fact.


Sent from my iPhone using Tapatalk
IMG_8281.jpg

Try this for the scum line and yellowing you get on the bottom. This stuff is amazing!


Sent from my iPhone using Tapatalk
 

FreeBird236

Well-Known Member
Joined
Apr 21, 2012
Messages
10,670
Reaction score
7,474
He didn’t say but said only permanent solution is painting or anodizing them another color.


Sent from my iPhone using Tapatalk
You could powder coat them clear, they would look the same and be much easier to clean.
 

FROGMAN524

Well-Known Member
Joined
Mar 16, 2013
Messages
2,474
Reaction score
3,154
You could powder coat them clear, they would look the same and be much easier to clean.
Funny because IMCO said do not powercoat them. Said it doesn’t hold up.


Sent from my iPhone using Tapatalk
 

FreeBird236

Well-Known Member
Joined
Apr 21, 2012
Messages
10,670
Reaction score
7,474
Funny because IMCO said do not powercoat them. Said it doesn’t hold up.


Sent from my iPhone using Tapatalk
Maybe because of the heat, not sure. Most all my hardware is clearcoated polished aluminum and has held up great (12 years), but I don't have that type of cover on the drive, just a chrome drive shower. For some reason I do have silver anodizing on the supports for the powdercoated swim steps, and the swim steps shine and are much easier to clean than the supports.
 

RiverDave

In it to win it
Joined
Sep 13, 2007
Messages
105,199
Reaction score
88,207
Do not put acidic products on anodizing.
toilet bowl cleaner is pretty mild.. would you go with a base style product like lime away? Or what would you use?

RD
 

RiverDave

In it to win it
Joined
Sep 13, 2007
Messages
105,199
Reaction score
88,207
Is the lime away acidic?


Sent from my iPhone using Tapatalk
I think it's a base? now I'm curious.. want to know what ole Racey would do.. I used toilet bowl cleaner to clean my drives all the time.. but I gotta admit I didn't have annodized parts on the drives..

RD
 

Racey

Maxwell Smart-Ass
Joined
Sep 18, 2007
Messages
16,461
Reaction score
25,106
toilet bowl cleaner is pretty mild.. would you go with a base style product like lime away? Or what would you use?

RD
Toilet bowl cleaner will strip anodizing, might not do it instantly like muriatic, but it will definitely do it, lime away is an acid as well has a pH of about 1.

Even base pH degreasers like purple power i have found to discolor and stain anodizing. It's super important to keep a nice coat of wax on it to stop this during your normal cleaning.

Keeping anodizing clean is more about doing the prepwork first rather than cleaning it after.
 

FROGMAN524

Well-Known Member
Joined
Mar 16, 2013
Messages
2,474
Reaction score
3,154
Hot sauce has vinegar in it. Is that a problem? I’ve read to use baking soda.


Sent from my iPhone using Tapatalk
 
Top