9in drum brakes

Since 1969, I have had 9inchers on only three of my modest number of A-bodies, and
on two of them I broke a spindle off, just motoring around a corner; and one was an inside turn with some weight transferred to the other side. So that was just bazarre; watching my wheel in the oncoming lane, with cars going this way and that, dodging that MIA wheel, eventually doing the dance of death. Bam! down went my car, now skidding along on the backing plate.
And yes, one of those also spun a wheel bearing, wrecking the spindle.(or maybe there were two....... that was a long time ago)
I was cured; never again did I run 9inchers. Those spindles are barely strong enough to keep the car off the pavement........ IMO.