Rusting BB Shell.

[Cycleops]

Blimey! And I thought Fiat had problems.

 

[Chris S]

Now that the paint has come off it will get a lot worse. It will continue to corrode and eventually turn into a pile of dust.

It rusted because water was trapped under the paint.

 

[fossyant]

Get a dremmel on it and then rust treat the area then repaint.

 

[Cycleops]

I don't think that would work fossy. I could bet that rust and corrosion is pretty much under most of the frame. If you started stripping it you'd never stop, then there's the corrosion, the metal underneath is very pitted, you'd never get a smooth finish. The OP could try I doubt it'd be worth the effort.

 

[biggs682]

I would sandblast and inspect also check where the rear cable goes in and out of the top tube seen a couple rust through there over the years

 

[fossyant]

You need to inspect the frame tube rust first as lugs are quite thick. Could be terminal on tubes.

 

[GuyBoden]

 

[Cycleops]

If he used that @GuyBoden I don't think he'd have much left.

 

[All uphill]

In order to feel comfortable I'd need to completely strip the frame of paint and rust to assess the integrity and vulnerability.

The amount of effort required wouldn't be worth it to my mind. I'd scrap it.

 

[richardfm]

It rusted because water was trapped under the paint.

And it will carry on rusting if not treated

 

[Cycleops]

I can't imagine how it became that rusted. Maybe they brought the frame from cold outside storage into a warm environment and then spayed it. Caused by condensation on the bare metal?

 

[Harril]

I can't imagine how it became that rusted. Maybe they brought the frame from cold outside storage into a warm environment and then spayed it. Caused by condensation on the bare metal?

It is baffling. I can only conclude utter neglect from its previous owners. I find it difficult to imagine the chap I bought from wasn't aware of the severity here.

 

[Harril]

Thank you all for the helpful advice and opinions. Considering the hassle and expense of having it sandblasted and then repainted, I think it would probably be prudent to reluctantly scrap the frame. I wish I'd have paid more attention prior to purchase!

 

[Chris S]

And it will carry on rusting if not treated

I just left mine and it hasn't got any worse. The top layer of rust seems to have protected the metal underneath.

 

[biggs682]

Thank you all for the helpful advice and opinions. Considering the hassle and expense of having it sandblasted and then repainted, I think it would probably be prudent to reluctantly scrap the frame. I wish I'd have paid more attention prior to purchase!

If you were more local i would offer to have that off you and get it sorted as i doubt it's much more than surface deep