Originally Posted by
bikemig
What's the difference between the Stronglight 116 bcd chainring and the TA and how does this need to be modded to work?
As others have pointed out, different sized chainring bolts. The TA 3-pin also uses bolts unique to that chainset; different size from anything else I’ve seen. The Stronglight steel cottered (and its Nervar variant) don’t use a bolt and sleeve system, but just a bolt as the crankarms are threaded. That’s what these rings are intended for, I’d guess.