Repairing rust holes.

[Dave_Mars]

I’m feeling slightly gutted this afternoon after paying just shy of £300 to get a tandem powder-coated, only for the blasting process to expose a hole in the bottom of the seat tube. The tube has always been sealed at the base, so water must’ve seeped in and rusted / weakened the side over time.



Is there a recommended product I can use to seal-up the hole? Has anyone had any luck with some sort of metal epoxy?

Cheers

 

[fguki]

Sloppy job there on the coating-edges of the bb shell, too. it might be prone to moist crawling under the coating, causing further degeneration.

Why was it not welded before coating?

 

[LeeDevelopment]

Bleedin' nora, they should have let you know prior to the powder job.

 

[Dave_Mars]

Apparently they assumed it was some sort of drain hole! They have offered to re-do the job after I get it sorted, but getting it brazed/welded seems overkill. I just want to seal the tube for now.

 

[Dave_Mars]

Ironically, I noticed the tube was sealed at the bottom and had concerns about water collection- so I drilled a drain hole though the BB as a precaution before I sent it to the paint shop. Seems I was right, but a few years too late

 

[fguki]

In that spot (no stem, no seat post etc.) a professional repair is fairly easy and not costly for a welder. Simply have a piece of tube or parts of a tube welded in and grinded flush! - then re-coated!

 

[highlandsflyer]

The BB rim doesn't look blasted.

 

[Tootyred]

Clear Silicon....certainly be a good temporary measure!

I had a tiny pin hole in a frame years ago after it was stripped and sprayed (again they apparently didn't notice) the tiny blob of silicone had now been in there a decade. No issues.

 

[Tootyred]

Or a pull through silicon bung...like a tyre repair...

 

[minor_LEGEND]

A bit of araldite over the hole.