Opinions on this repair wanted

Hello,

I obtained this Colnago Tecnos a while back from an online seller who sneakily declined to mention or show that it had been damaged and repaired.

He did agree for me to to return it but I never got around to it. Anyway I came to the conclusion that it may be cheaper to get 2 new chainstays put in rather than to wait many more years for a Tecnos to show up in my size at astronomical cost.

I have ridden it, very nice it was too. However I am 90kg (winter weight) and I kept having nagging thoughts "what if I hit something and that tig weld splits?" .

So what say you? do you think it would hold? it is at a stress point (the gusset) or should I follow my instincts and just ask Winston to replace the stays?

Here...

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its a tig weld, probably the strongest bit of joined metal in the whole frame.

it's in a point that won't give way without warning and if it did it would probably just cause the rear wheel to lock up, so you'll skid to a stop.

I wouldn't worry about it. most I would do is clean the weld up and repaint it.

Cut out the middleman and ask Winston.

It's probably come about as a result of the step-change across the metal joint. Its not heathy for steel that suffers bending stresses to have sudden guage changes. Those stays are going to be less than 1mm thick and they are then sleeved by a lug that is many mm thick across that web. My guess is heavy pedalling and out of the saddle efforts have caused the crack.