Carbon stays lasting on metal frames?

[Veloo]

The Douglas PSA reminded me that I've been meaning to ask if anyone has ever had, seen or heard of a carbon stay separating from its steel, aluminum or Ti half.

Didn't see anything on a very quick search but have wondered for a while about the longevity of those mixed material frames.

[batman1425]

Depends on the frame, type of connection (glue only, glue + mechanical fastener), etc but I've seen it happen before.

Older aluminum Alan cross frames with the carbon chainstays seemed to have a history of separating from the BB junction after the adhesive failed. Had a friend that went through 3 of them, all the same failure point.

The mixed material cannondale six13's had frequent reports of corrosion at the AL-Carbon junction as well.

[bigreen505]

I had a stay crack, but not separate. I would love to get it fixed. It was a fantastic frame.

[berserk87]

My last frame was a Klein Quantum Race - aluminum with a carbon rear triangle.

The aluminum started to bubble and corrode near the carbon junction at the seat stay. On a ride one day, I hit a hard bump at high speed and the area made a loud cracking noise. There was a crack/line visible in the area after that. The frame did not fail, but it was unnerving.

At that point, I ended up retiring the frame and got something else. I had the Klein for about 13 years and had beaten it silly, so I couldn't complain too much.

[duff_duffy]

I’ve had mixed frames from Serotta, Airborne, Lemond, Seven and Colnago. Never had issues with any of them and would not hesitate to buy new or used (if taken care of).

[RonW87]

I have a Pinarello alu-carbon Prince that's probably close to 20 years old. Ridden in miserable weather and had it on a trainer for a couple of years. Similar with a Trek. No issues at the carbon/alu junction.

[bigman]

Never had an issue with steel and carbon, ti and carbon or airplane aluminum and carbon.

[gforce]

I had a Orbea starship frame that was alu with carbon stays. It
was getting a bit old when I noticed some clear coat cracking. This
graduated to some movement in the carbon stay at the alu junction.
I decided to retire it before it got worse.

[fignon's barber]

I had a Colnago CT1 with carbon BStay for 14 years. Great bike and never had a problem. Also had a Colnago Dream with BStay that was also excellent.

[oldpotatoe]

The Douglas PSA reminded me that I've been meaning to ask if anyone has ever had, seen or heard of a carbon stay separating from its steel, aluminum or Ti half.

Didn't see anything on a very quick search but have wondered for a while about the longevity of those mixed material frames.

Infrequent but not unheard of ..seen it a few times. Maybe some industrial strength epoxy can fix it.

[oldpotatoe]

The Douglas PSA reminded me that I've been meaning to ask if anyone has ever had, seen or heard of a carbon stay separating from its steel, aluminum or Ti half.

Didn't see anything on a very quick search but have wondered for a while about the longevity of those mixed material frames.

Somebody has a recall about aluminum/carbon mixed frames that were corroding/separating because the aluminum wasn't pre treated properly before hand..or sumthin..don remember. :eek:

[Gummee]

My Y2K Quattro Assi still looks great (but it's hanging in the garage waiting for a group)

M

[FlashUNC]

No u'll die.

[wildboar]

https://youtu.be/ApaHwSixklA?t=158

[Geemalar]

FWIW owner since new of a 2002 Litespeed Siena which now for the past 10 years is only used on road in winters and on the trainer. Carbon / ti junction looks like the day I purchased it.