Tom Sherman wrote:


Chain wear mostly occurs as the chain is being bent around the rear
sprocket(s). I get about one-half the rate of chain wear on my RANS
Rocket as I do on an upright with the same model Shimano HG chain (which
is fortunate since a replacement chain for the Rocket costs twice as much).


We weren't concerned about cost. The only question was why his chain
showed little or maybe no appreciable wear in over 2k miles.