A bit of searching hasn't turned up much on this, looking for the spacing between a rings on a 12sp sram road double crankset. I'm trying to see if I can make a non-sram double crankset run on my daughter's Rival axs setup. It's been running 1x which worked fine with a 40t ring for Jr. gearing restrictions but those restrictions went away and a 46t went on so she could keep up in the races. But this last week she did the Hincapie Grand Fondo in PA and the 46/34 was not low enough to make several of the climbs. Right now I can't find the 160mm rival crankset in stock unless I get the wide version which is a poor choice for a 12yo girl so I'm trying to make her 155mm crank compatible. I figure this means I'll have to mill the spider some, or the chainrings to get the spacing close enough, just need to figure the spacing I have to reach.