Originally Posted by
verktyg
If you are talking about the 3 pulley Cyclone long arm RD, it would work without any problems.
As for the short arm original design... as they used to say in Jinglish slang in Japan in the 1960's "Neba hatchy boysan"!
24T rear, maybe 26T - I'm talking about freewheel size/tooth count, not derailleur capacity.
They could handle 52-42T with a 24T or maybe a 26T FW.
BTW, from the Suntour V derailleurs of the early 70's on, the short arm RDs were designed for competition use and rated at 24T maximum FW size.
Trust those who through trial and error or mistakes have "been there, done that"!
verktyg
The Cyclone I have is the GT long cage version. The
Disreali Gears page shows a maximum cog of 32T, so I think I'd be fine.
I also have the
Mk-II which is listed as being capable of 34T and which also might suit the era of my '89 Voyageur better.