Originally Posted by shane45
Again, shifting from the big chainring to the middle ring REDUCES my chain tension. If it is OK for me to run big front and little cog, then it is EASIER on the chain if I shift to middle chainring without touching the back cogs at all.
How is this bad???
I suppose you are referring to the tension set up by the read derailer? This tension is negligible compared to the tension on the top part of the chain that is under load as you pedal - that's the one that buggers chains and cogs.