Whats so bad about the (smooth back) silent type link chain? It actually looks stronger with 5-6 links per pin. I know they ran them on crap nylon gears but you can get steel gears too. If its about reduced friction....C'mon; Many of us are running battleship springs that would nullify that friction tax. I remember an old Hamburger ad for a HD silent type chain. That type of chain is less likely to gouge the nylon of the tensioner if that is a concern.
