Thread: Stem recall
View Single Post
  #7  
Old May 19th 17, 04:58 AM posted to rec.bicycles.tech
John B.[_3_]
external usenet poster
 
Posts: 5,697
Default Stem recall

On Thu, 18 May 2017 17:49:03 -0500, AMuzi wrote:

On 5/18/2017 5:06 PM, wrote:
On Thursday, May 18, 2017 at 11:36:53 AM UTC-7, AMuzi wrote:
https://drive.google.com/file/d/0B0Z...o1M3Q4Y3M/view

Produced 2007~2013. The interesting line is "may corrode and
fail". Not the usual, "may crack and fail". CPSC reports
exactly one incident with injury.


Profile is one of the best stems I've used. Corrode and fail?


In that this particular model is carbon-wrapped aluminum, I
suppose that's a galvanic corrosion effect.


I've read a number of articles about "fiberglass" and aluminum which
advised against fiberglass/aluminum joins. The articles stated that
corrosion could creep between the aluminum and the epoxy bond. I
suspect that in the case of CF composites what was reported to as
simply "corrosion" was actually a galvanic corrosion.

It might be noted that this phenomena has been reported since the
1960's.

--
Cheers,

John B.

Ads
 

Home - Home - Home - Home - Home