Internal Rusting

jonKranked · Sep 16, 2011

no idea what causes it, but my S&M LTF did the same thing.

Westy · Sep 16, 2011

I wonder if a sacrificial anode would help with this. I'd try bolting a zinc washer somewhere to the bike where good electrical contact could be made. You can make a zinc washer by sanding the thin copper coating off of a new penny and drilling a hole.

w00dy · Sep 17, 2011

Westy said:
I wonder if a sacrificial anode would help with this. I'd try bolting a zinc washer somewhere to the bike where good electrical contact could be made. You can make a zinc washer by sanding the thin copper coating off of a new penny and drilling a hole.

Only works if water droplet is touching steel and zinc at the same time.

Can we get a pic of the rust? That sounds cool looking.

eaterofdog · Sep 17, 2011

Hmm so that is what happens under the paint? Interesting.

Mr Jones · Sep 17, 2011

Could have been some unseen surface rust right before it was sent to paint.

insanitylevel9 · Sep 17, 2011

Mr Jones said:
Could have been some unseen surface rust right before it was sent to paint.

thats the only thing i could think of

CrabJoe StretchPants · Sep 17, 2011

It's turning rootbeer!

This is like that piece of toast with the virgin Mary on it.

gonefirefightin · Sep 17, 2011

sounds like the sprayer didnt have (or clogged) driers/filters inbetween the compressor and gun

tmx · Sep 19, 2011

eaterofdog said:
Hmm so that is what happens under the paint? Interesting.

This.

demo 9 said:
I have a raw superco dirt jump bike. Recently it has started rusting, INSIDE the clearcoat-its not much, just little doghair looking lines, pretty small, but i can see that its starting in other places too...

The frame is 99% perfect with no scratches in the clearcoat, so i cannot figure out why/how its rusting. I always dry it when/if i gets wet, but i have no idea how to stop this short of sanding off the clear-which i wont do..

help

From Doc: "This is exactly why I resisted so long on the clearcoat frames.
High performance steel is very flexible and resilient; the stiff plastic clearcoat gets micro cracks all over the place, letting moisture under it.
The rust spider veins will occur much faster if you live in more humid areas and store the bike NOT in your climate controlled living space (ie: garage, shed, on the lawn, hanging in a tree).

Structural integrity will not be compromised for many many years, when an entire tube junction is rusted like a boat anchor and the clearcoat is bubbling off.

If you’re worried, get a can of J.P. Weigle’s Frame Saver. Spray it inside of all the tubing, following the directions on the can. It’s a brown wax that stops rust from the inside of the frame outwards.

As for the rust already under the clearcoat: there is no stopping it without stripping the paint and refinishing (which will also remove the weld color). NEVER sand the paint off a frame!!!!! Use a chemical paint stripper like Klean-Strip Paint Stripper.

It is possible that only a powdercoat type clearcoat has this cracking issue. Maybe wet paint clears are flexible enough not to get the rust spiders."

Justin, you're always welcomed and encouraged to contact Superco directly with any questions about your frame.

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Internal Rusting

demo 9

Turbo Monkey

jonKranked

Detective Dookie

Westy

the teste

w00dy

In heaven there is no beer

eaterofdog

ass grabber

Mr Jones

Turbo Monkey

insanitylevel9

triple nubby

CrabJoe StretchPants

Reincarnated Crab Walking Head Spinning Bruce Dick

gonefirefightin

free wieners

tmx

aka chromegoddess