I acquired a Stronglight 99 a while back without the bolts. It’s an 86 bcd crank that SR copied with the Apex and Super Custom. I happen to have all three. I just started exploring putting together a triple on the Stronglight for a Peugeot build and noticed something very different compared to the SR versions - the inner side of the chainring has bolt recesses for the head of a chainring nut and no shelf for the ring to sit on. It’s as if it’s built to be used as a single speed. Was that a thing with 99’s? Photos with the Stronglight on left:



I can make it work with the bolts from the SR, but then I need more bolts for the SR. Am I missing something or was this normal? According to photos from a Stronglight catalog, the 99 should look like the SR. It’s my first Stronglight so I have no comparisons.

Thanks for any insight.
David