Can Shimano 600 front derailleur handle 3 chain wheels? I have a 48-38-28 chainwheel and I wonder if Shimano 600EX Arabesque has enough leeway to accommodate it. If you know another derailleur from the same era that could do it that would be also useful to me.

Normally, it doesn't but there are some rare pieces that do support three wheels. I just bought one (Shimano 600 Arabesque), I haven't installed it yet, but it seems to fit.

Thanks to Booker for his input.