"bob" <
[email protected]> wrote in message
news:[email protected]...
> My wife's Ultegra STI 8 speed levers are trashed. I want to replace them with a Campy Ergo. Is
> there any Campy Erro set that will work without replacing the calipers and the rear hub?
Bob: I've done this upgrade several times now.
Easiest coversion is to get some 8-speed Ergopower shifters and a Campagnolo rear derailleur from
before 2000. Ebay. Your 8-speed cog spacing is 4.8mm center to center. The Campagnolo wants 5.0mm
spacing, but in practice its usually close enough. Worst case: add a few 7-speed spacers to your
cassette, or a few aluminum beer-can spacers to widen-out the cassette a tad.
Advice: The actuation ratio difference between Shimano and Campagnolo rear derailleurs is so large
that the shifters and deraillers should be matched.
The best information I currently have is the following:
Shimano: 1.67:1 Dura-Ace pre 1998: about 1.8:1 Campagnolo (pre-2000): 1.43:1 Campagnolo (post 1999):
1.50:1 Sachs New Success:: about 1.6:1 SRAM 1:1: 1.0:1
This is the ratio between the shifter cable pull, and how far on average the derailleur moves across
the cogs. Any techs out there have anything better than this?