Hello tomtom yes you read it correctly.
Chain falls off to the rt. side of big ring.
It happened again today. somehow the tension pushes
it outward and then gets caught on the teeth causing abrupt
stopping resulting in me falling.
I'm a DIY so if I know I can fix this eventually I won't waste
money taking it to a shop when I can do it myself.
I've moved the pulleys sided to side and it is really not bad.
I've had worse cases in the past without this issue....hence
the dilemma. maybe it's because in the past it was a short cage
which wouldn't have as much play? not sure.
Maybe the chain is too short? which may explain this happening?
1st pic with Ultegra R8000 is one with issue.
Maybe there is not enough bend on the top pulley wheel?
2nd pic is one with the Shimano 105 has a little more bend.
but thinking chain is too short on this also? as I think the chain
skipped to the next cog on initial hard pedaling also. Added 3 links
on this because replaced 50T to 52T big ring recently. but haven't test
ridden it yet.