Originally Posted by
FarHorizon
The bar clamp isn't symmetrical. On the stem side, there are two "outer rails" on the clamp that hold the bar. On the "crown" side of the stem, the clamp is solid. It is a 4-bolt crown. A picture is worth a thousand words:
And this is in response to what?
It's the design by some considered to be a higher risk due to a greater force concentration by the edges. Again accidentally crimping the bar and creating a stress riser as the envisioned failure mode.