Time Trial / Time Trialling / TT

I'm guessing the inner chainring sandwiched between the 77t ring and the outer ring mount is there as a spacer to stop the 77 from hitting the chainstay. Maybe we could club together and buy Nik a longer BB spindle? :-)

Correct. I already fitted a long B/B but still rubs when I put the power down so spaced out a bit more with the inner ring. Not ideal as the chainline is a bit out. Unfortunately the Felt chainstay flares out right from the B/B area.