Okay, I went to Harris' site and measured my axle but there's no perfect match. Short side is 32, middle is 52, but the long side is ~47mm or so. Overall ~133mm. The long side being the one holding the crank; so I can go with something shorter since I'm just putting a single chainring on the crank. But what length do I choose?

On this chart, most everything is gone forever.

There is a Sugino that's 35mm, 52mm, 37.5mm; part #3S-B that's 124.5mm but everyone else says their 3S-B is 121.5mm.

On another site I've found I found a track axle; the 3NN-B. it's 36mm, 52mm, 36mm. There's also the SG-75 spindle that's also 109mm.

The track spindle seems to be the proper choice; the Sugino RD crankset is what I put on my wife's Peugeot.

CharlesC, which Sugino spindle did you get?