Originally Posted by fixedpip
... if your chainline is off enough, or your cranks/ring can flex enough, or you have a chainring with shifting platforms, you could theoretically 'shift off ' under very high load.
It's been mentioned before in this thread. SS/fixed specific chainrings work best. Otherwise, the ring is designed to drop the chain with enough side-loading. Surly makes some affordable steel rings in a lot of bcd's.
A lot of SS'ers have the same problem when using hyperglide cassette cogs on a cassette hub conversion.