Originally Posted by
bkaapcke
On a RD, adjusting the low limit stop 1/2 turn, moving it towards the spokes will eliminate this problem. bk
Definitely not, won't/can't help, and might cause harm.
The problem is described as the chain falling off to the outside (towards the crank) when on the outer chainring, and one of the outer cassette sprockets. Since the low limit is to the inside, and in any case has nothing to do with the position of the RD except on the innermost sprocket it can't do anything to help the OP.
OTOH, adjusting the low gear to allow the RD to move inboard, even by as little as a half turn could cause the chain to over-derail past the largest sprocket and into the spokes. Not a good thing at all, and possibly a very bad thing.
Limit screws are exactly what they are called. they
limit the innermost and outermost position of the derailleur, no more no less. They have absolutely nothing to do with any of the intermediate positions of the derailleur, which are controlled by the cable.