BSA_WM20: What do you see that I don't that qualifies these tubes as downright dangerous? The bike shows <6K miles and has been stored indoors. However, there was water contamination in one of the tubes.
Firstly I can be just as wrong as the next person and everything you read on a post should be independently verified.
I could be whoI say I am or a 9 year old with good cut & paste skills.
Now what I see.
In photo 1
I see a surface crack running around the circumference at the right side of the image.
Forks flex front back as you hit bumps, brakes etc.
That crack is the perfect place to magnify these forces and continue both around & through the thickness of the metal.
At some point in time when the crack exceeds the fracture toughness of the material it will just snap in a brittle fracture mode.
The crack will also hold water so accelerate chemical corrosion .
While I hate to use the term fatigue stress corrosion cracking, that is a perfect place for it to happen.
just to the left of the major corrosion pits, which would be reason enough to toss them due to the depth there is a smaller pit.
Top & bottom of that pit are longitudal cracks.
These cracks are in the rolling / extrusion direction and are intergranular.
These are the most dangerous cracks of the lot .
They will extend almost completely through the tube but you will need a 1000x microscope to see them.
Once this type of crack starts there is no stopping it.
Usually you expect to see it at the left or right extremities of the leg when fitted and again as the forks flex it allows the metal in the front & behind the crack to move with respect to each other.
Now I am not talking 1's" or even 0.001's" the movement is microscopic but the effects are devastating . And cracks in that direction can progress very fast.
Now it could go for another 100 years before failure or it could fall apart the next time you rode the bike it all comes down to the ability of the actual grade of steel to tolerate these situations , the quality of the steel as recieved from the mill , we call this fracture toughness and the study of it is basically a specalist field of engineering unto itself.
I would equate riding on those the equivalent to closing your eyes putting a revolver in your mouth & pulling the trigger.
And this is regardless of weather you had them "repaired" ( which they can not be ) or not.
The price of a new set of fork tubes is about the same as 2 hours in intensive care, less than he cost of the amublance to get you there.
Add to that a collapsed front fork at any speed over walking pace will be a total write off accident