I've got what I believe is a second generation Campy Super Record rear derailleur, and I'm trying to set it up with a triple crankset. According to the 1982 Campy catalog, the chain wrap capacity for this derailleur ought to be 28. I'm using a 49-42-32 crank and a 13-24 freewheel, so that should work, right? My trouble is, I haven't explored the edges of what Campy derailleurs of this vintage can do, so I'm not sure how short I can get away with cutting my chain. Here's how it looks now with the big-big combo (kindly disregard my phone's choice of what to put in focus):



With a modern derailleur geometry that's about as far as I'd want to stretch it out, but it seems like I can keep twisting the derailleur cage to the point where it would effectively allow the chain to go straight from cog to chainring without any deflection. Is it safe to run that way? It looks like I could probably take out two more links if I let it wind that far. Right now, the chain is too slack on the 32-15 combo and 32-13 is out of the question.

(FWIW, I am aware I could make this a non-issue with a long cage swap, but those are ugly and I'd like to keep this bike looking good.)

Thanks for any help!