Safe frame or not? Pin hole!

[Milzy]

I’ve noticed a pin hole in this bonded chain stay part of the frame. It looks like maybe there’s a natural gap there that they’ve filled with paint?

Should I fill back up with a blob of paint and forget?

 

[classic33]

There's movement on the lug as well.
Should there be any movement?

 

[Milzy]

There's movement on the lug as well.
Should there be any movement?

It’s not physically moving if you pull and twist it around.

It looks like some kind of gap that maybe normal & they’ve just filled through it with paint.

 

[classic33]

What about where it attaches to the rear dropout. That's where there appears to be movement.

 

[YMFB]

Is it steel ? If it is I wonder if it’s a drain hole used when dipping prior to painting.

 

[Milzy]

What about where it attaches to the rear dropout. That's where there appears to be movement.

It’s solid. Nut going through.
I wonder if trapped air has forced its way out?

 

[Drago]

Bonded, you say! Carbon tube into alloy lugs? How old?

It's probably nothing, just a flaw in the suspiciously thick paint.

 

[Milzy]

Is it steel ? If it is I wonder if it’s a drain hole used when dipping prior to painting.

Carbon. Looks like full open grooves and they’ve sprayed them to fill up. Some classic French design.

 

[Milzy]

Bonded, you say! Carbon tube into alloy lugs? How old?

It's probably nothing, just a flaw in the suspiciously thick paint.

20 years ish. Seems good condition. Any pin hole is alarming though. Hope it’s just solvent gases have pushed through the paint.

 

[Milzy]

It’s solid. Nut going through.
I wonder if trapped air has forced its way out?
View attachment 825922

I’ve seen a few of these and they all seem to have thick paint only in those areas. The carbon tubes are thin paint and lacquered to an amazing finish.

 

[Drago]

Im always suspicious of that type of construction. Too many age related failures for my dentists liking. And that paint is making my nose twitch.

Its probably fine, but the nature of the beast, age, and the unknown reasons for that weirdly thick paint would have me getting off and pushing im afraid.

 

[Ming the Merciless]

Carbon. Looks like full open grooves and they’ve sprayed them to fill up. Some classic French design.

That is clearly a home done amateur paint job. The question is why they did that for a carbon frame?

What does the other seat / chain stay look like if you took identical photos?

 

[Milzy]

That is clearly a home done amateur paint job. The question is why they did that for a carbon frame?

What does the other seat / chain stay look like if you took identical photos?

Just from pictures I’ve seen online with the same paint design. It’s heavy only in those areas.

 

[Milzy]

Im always suspicious of that type of construction. Too many age related failures for my dentists liking. And that paint is making my nose twitch.

Its probably fine, but the nature of the beast, age, and the unknown reasons for that weirdly thick paint would have me getting off and pushing im afraid.

I’m seeing the LBS soon, I’ll ask them what they think. If it’s good to go I’ll probably just put some white sealant in the pin hole.

 

[Gunk]

I’m seeing the LBS soon, I’ll ask them what they think. If it’s good to go I’ll probably just put some white sealant in the pin hole.

I think it’s fine, just a joint where the carbon frame connects to the ally dropout, nothing to worry about.