Yes I have seen maybe 4 or 5 broken 1R stems, and have broken two 3Ts myself, but have never seen a broken AVA (that I can remember).
That doesn't mean AVAs are strong, of course!
Mark Bulgier Seattle WA USA
Kevin Kruger shared:
>
> My example of a "Near Death" handlebar stem. Here's my Wool
> Jersey photo address:
>
> http://www.wooljersey.com/gallery/Cinelli1RFailure