I have a Campy Victory RD with two broken pulleys. I've got a Raleigh branded SunTour RD from circa 1979 and I was wondering if the pulleys are interchangeable?

I doubt it but since oyu have both derailleurs it is always worth a try.

Measure the width and also the diameter of the bolts.

You can try scrolling through here for pulleys. Triomphe will certainly fit but NR/SR may also do the trick.

https://www.ochsnerusa-store.com/products.php?cat=1

FWIW, I have SunTour "Superbe" pulleys in my Super Record derailleur and they work fine.

Thanks, I think I figured out what caused the failure of the upper pulley. The washer that hold the RD at the proper angle to the frame is missing. This evidently caused the RD to swing up into the freewheel and likely broke the pulley. I'm not sure what this part is called but it should sit between the RD and the dropout. I believe this is the "B" adjustment on these Victory RDs. I've been searching everywhere and I can't find this one little part.

Those always break and are nearly impossible to find. It was not one of Campagnolo's better ideas.

I'm referring to the missing part, not the broken pulley.

I'm a fan of inexpensive current-production CNC alloy pulleys with dinky little cartridge bearings in them. They last a long time and are quiet, too. Sometimes you might have to ream out the inner "cups" to let the bolt pass through, but that's no big deal since they're soft aluminum.

I've never tried them in _this_ derailleur, but if you're willing to do some filing/reaming on the cups, they should fit nearly anything vintage.

Don't all of the current production pulleys have 11 teeth? Does the larger diameter cause problems when used on vintage derailers that have pulleys with ten teeth?

I have a victory derailleur missing that part as well and I've never found it is called an upper body bushing part 7116067