cstar 

Made a triple out of one of those swaged Sugino Maxy cranksets where the 52T ring is not removable. I know they are nothing fancy, but I have a soft spot for them for some reason. Plus the integral chainring is flat making it very easy to mount a granny ring using a few standard chainring spacers stacked. Buzzed off the 52T chainring just beyond the 110 bcd holes, filed to clean it up. Had to file the slotted holes a hair to get the chainring nuts to fit in there. All in all quite easy, like it was designed for this. The bike is likely a 1979 and I wasn't sure if triples were really available yet so I thought I would make a triple that -could- have existed at this time. I've seen home made triples of a similar fashion using a suntour freewheel cog for a granny. Somehow I feel it just 'works' with this bike