Is this Ti weld OK or not?

[happycampyer]

Originally Posted by Jere

Hi
I was a welder many moons ago.
It looks like undercutting
Not enough filler rod
Too much heat
Welding too fast
Even if it was the second pass You still don’t wanna undercut your pipe
Does it look horrible or not rideable no.
Signed
Grumpy old man

“Undercutting” was the term I was thinking of.

[MikeD]

I'm not seeing undercutting. Undercutting is what's shown in Louis's first cross section picture.

From Google:

Undercut refers to the groove or depression that forms along the edge of the weld bead, where the base metal has melted but has not been adequately filled by the filler metal.

[sokyroadie]

As an ex AWS CWI (Certified Welding Inspector) I would 100% ride that.

[David Kirk]

Originally Posted by sokyroadie

As an ex AWS CWI (Certified Welding Inspector) I would 100% ride that.

It looks good to me too.

dave

[bshell]

The weld in the OP looks fine and I don't think I've ever looked at welds this closely but now I'm curious about the other two pictures. Do the top tube and seat stay look the teeniest bit undercut on the Firefly?

The Moots welds look 'fuller' to me. If anyone knows, who does single vs. double passes?

[Black Dog]

Originally Posted by merckxman

I was referring to the center outer edge on right side. Thanks.

That area looks fine. I have a Litespeed with welds that look like that; a friend who is a certified aircraft welder told me they were functionally sound just not as pretty as they could be. All bikes are tools but only some are also jewels. Others here who are experts in these matters have weighed in and as always this place delivers.

[FriarQuade]

Originally Posted by sokyroadie

As an ex AWS CWI (Certified Welding Inspector) I would 100% ride that.

Originally Posted by David Kirk

It looks good to me too.

dave

3rd.

Also, there's a lot of bad and irrelevant information in this thread. Some of you should know when to just leave these kinds of questions to the handful of us that actually have experience in such things.

[dgauthier]

Originally Posted by sokyroadie

As an ex AWS CWI (Certified Welding Inspector) I would 100% ride that.

Originally Posted by David Kirk

It looks good to me too.

Originally Posted by FriarQuade

3rd.

Also, there's a lot of bad and irrelevant information in this thread. Some of you should know when to just leave these kinds of questions to the handful of us that actually have experience in such things.

Would any of you three gentlemen care to elaborate? What do you see in the OP's photo that tells you it's okay, or what flaws are you looking for that are absent?

If the forum could use some education on this topic, please educate us!

[avalonracing]

I'm to a welder but I've had a lot of Ti bikes and I never would have questioned it. That said, imagine what is hidden under the paint on steal and carbon bikes that no one would ever see or question.