so I have some 9 speed campy shifters and a 9 speed shimano wheelset lying around, I'd like to know if they can work with each other so I can save some money as I'm planning on building/ upgrading a bike in the near future with these parts. So in short, is Campagnolo and Shimano in any way compatible with each other?
Campagnolo has two cable pull numbers for 9 speed, theres 3.0 and 3.2 mm per click.
Shimano 9 speed is 2.5mm of cable pull per click, so you're out of luck.
I'd suggest selling on the campy shifters on ebay and use the proceeds to fund some boring but common shimano ones.
Or go the other way and look for a campag rear wheel and derailleurs, but these will likely be more rare and therefore cost more.