The above may very well be correct. It's been awhile since I actually measured a spindle on an old SL crank, and I'm going on a memory extremely faulty on exactitude. I do know that the SL cranks took substantially longer BB spindles than modern cranks. 118 sounds about right, but so did 120.

I do recall one questioner who came here looking for a SL spindle length. He was building a fixie, and the fixie kids had told him to get some ridiculously short spindle length. We told him different, but he decided the fixie kids knew more. His crankarms wound up hitting his rear stays. Score one for C&V.