"karl" wrote in message ...
*****The O-520 mount is a
bed mount; if it had been the usual rear mounting the engine would
have fallen off.****

No, it isn't a bed mount in a Cessna 185. The mount attaches to fourpoints
on the firewall.

A cessna 206, however, has a bed mount.

Karl
"curator" N185KG

The mount attaches to the firewall, but extends underneath the
engine and attaches to four mounts on the *bottom* of the case. These
are the mounts that failed, not the tubing. The engine in question was
resting on that structure when the noise was finished.