I took a Takagi triple crankset off a bike with a 68mm x 124mm bottom bracket. The bike was from 1983-84 and probably had rear spacing of 126mm or so.
I removed the inner and outer chainrings and mounted the middle chainring in the position of the outer ring. I installed a 73mm x 127mm BB on a bike with a 73 BB shell and 135 rear spacing. There is no way the inner ring would fit without hitting the chainstays and the middle ring cannot even be mounted in it's original location without striking the chainstays.
I want to add the inner ring and make a double. Is it possible with this crankset/frame combination? The 127mm spindle is the longest I found in 73mm. I would need a spindle in the 130's to make it work as a double.