Fender Preservation Coating

[Paul Sutton]

I have a fender with pretty good chrome. However, the underside is covered in rust. The rust is easy to remove but then what do I do? What coatings are currently being used on the underside to prevent further rusting and to withstand the impact of grit?

Thank you for any suggestions Guys.

 

[ThatXS650Guy]

Hmmmm… Rubberized undercoating?

 

[mrtwowheel]

https://www.truevalue.com/8-oz-rust...pla-294682000766&ctfeedid=&ctnwk=g&ctdevice=c

This stuff definitely, no other option for me. Rustoleum Rust Reformer. This is not a paint, it is a treatment for rust. You wire brush or sand the rusty surface, just removing anything loose, clean with alcohol or acetone, brush this stuff on, it has the consistency of water. After it is dry you can mask off and spray on undercoating. I have done inside of headlight buckets with no paint afterwards, no rust after 20+ years. I have also done fenders, chain guards and used undercoating over the Rust Reformer. I have done spokes with Rust Reformer and brushed on paint too. Like I said, no other option for me after seeing how long this stuff lasts.

Scott

 

[Jim]

I use this truck bed paint. Very durable stuff.

 

[fredintoon]

I have a fender with pretty good chrome. However, the underside is covered in rust. The rust is easy to remove but then what do I do? What coatings are currently being used on the underside to prevent further rusting and to withstand the impact of grit?
Thank you for any suggestions Guys.

Hi Paul,
I'd go multi-coat.
After the rust is removed, first a coat of Zinc-rich primer then like 650guy sez , a coat of rubberized underseal.
Guess you'll be trotting down to Halfords soon?
[edit] OK I've never heard of Scott's jollop but yeah, that first.
Then the Zinc rich primer. And bed liner instead of underseal?
Or bed liner then underseal? The rear fender lives a hard life so why not?

 

[mrtwowheel]

This is starting to look like an "oil thread".

Scott

 

[Jim]

This is starting to look like an "oil thread".

Scott

Just remember the two most abundant elements in the Universe..... Hydrogen and opinions...

 

[Mailman]

I am currently restoring my XS2, it came from a dry climate and the rust was minimal. The underside of the fenders had moderate rust pitting that I was able to remove with steel wool, which left a fairly bright and natural appearance. Like you I wished to preserve that, so I cleaned it real good with paint thinner and then sprayed clear Rustoleum on it. It came out really nice and still has the bright appearance of the original chrome but is well protected from rust.

I wrote about this here, scroll down in post #645 .
http://www.xs650.com/threads/mailman’s-xs2-a-sympathetic-restoration.51520/page-33

 

[Paul Sutton]

Nice answers Guys. So it will be loose rust removal followed by rust treatment followed by a zinc rich primer and then something tough for on top. Once I sort out the top coat I will need to change the engine oil. What oil should I be using ?

Thank you for the guidance.

 

[Jim]

.......I will need to change the engine oil. What oil should I be using ?

 

[GLJ]

Let the free for all begin.

 

[canuck1969]

+1 on the Rubberized undercoating, rockerpanel or truckbed liner. You won't see it and it will be the toughest finish you can get for that application.

I used rockerpanel spray on mine. Removed as much rust as i could with a wire brush. Some rust is fine. Followed by 2 coats of primer and a heavy layer of rocker panel spray. Good as new.

As for the oil.......

 

[Jim]

Wire brushed the rust with a die grinder, zinc phosphate prime and truckbed topcoat.

 

[MrBultaco]

Just remember the two most abundant elements in the Universe..... Hydrogen and opinions...

Love the reference Jim54.....heavy on the opinions

 

[canuck1969]

 

[Goldenboy]

Wire brushed the rust with a die grinder, zinc phosphate prime and truckbed topcoat.

View attachment 128369

Luckily, I undercoated mine when they were new. JUST A CAN OF SPRAY UNDERCOAT! You guys are a riot!

 

[Paul Sutton]

Got one cleaned and primed. Now to find that truckbed topcoat. Got some questions about PMAs, but they will have to wait for now.

Thanks again.

 

[mrtwowheel]

The first step in installing a PMA is to RIP out the wiring harness. The second step is to wire the WHOLE bike with only two wires. The third step is to HIDE those two wires so that they will never be found again.

Scott

 

[mrtwowheel]

https://www.truevalue.com/8-oz-rust...pla-294682000766&ctfeedid=&ctnwk=g&ctdevice=c

This stuff definitely, no other option for me. Rustoleum Rust Reformer. This is not a paint, it is a treatment for rust. You wire brush or sand the rusty surface, just removing anything loose, clean with alcohol or acetone, brush this stuff on, it has the consistency of water. After it is dry you can mask off and spray on undercoating. I have done inside of headlight buckets with no paint afterwards, no rust after 20+ years. I have also done fenders, chain guards and used undercoating over the Rust Reformer. I have done spokes with Rust Reformer and brushed on paint too. Like I said, no other option for me after seeing how long this stuff lasts.

Scott

Just want to add, there is no good reason to spray primer between the Rust Reformer and undercoating or bed liner.

 

[mrtwowheel]

I am currently restoring my XS2, it came from a dry climate and the rust was minimal. The underside of the fenders had moderate rust pitting that I was able to remove with steel wool, which left a fairly bright and natural appearance. Like you I wished to preserve that, so I cleaned it real good with paint thinner and then sprayed clear Rustoleum on it. It came out really nice and still has the bright appearance of the original chrome but is well protected from rust.

I wrote about this here, scroll down in post #645 .
http://www.xs650.com/threads/mailman’s-xs2-a-sympathetic-restoration.51520/page-33
View attachment 128366

That aint rust. Looks like a minor acne problem.

Scott