the cassette. Splitting the difference would mean that the chain would be mis-aligned
with the further most outboard and inboard cog by only .84mm.
By the same token 10sp Campy spacing is 4.12mm compared to 9sp Shimano at
4.34mm or .22mm difference.
Remember the days of 8sp when everyone was buying spacing kits to convert
Shimano cassettes to proper spacing for Ergo levers? The difference then was only
.25mm with 7 positions to change from an aligned one or 1.75mm by the end of the
cassette or if perfect alignment was attained in the middle cog then it would be off by
only .875mm at each end of the cassette. I find it strange that this was unacceptable
for the very forgiving nature of 8sp (as compared to 9 or 10) and that everyone was
advocating respacing of the cogs to get back to Campy specs but now all of the
sudden it is supposed to work with a much narrower chain. Hmmm.... I am sure it
works but it has to be a bit finicky.
After the first draft, I received many favorable emails asking me to include this method in the
next revision. You asked for it and here it is! I was hesitant to talk about this method in the original
draft. I didn't have any experience using it and I was not comfortable talking about. Luckily Mark
Livingood and Mark Johnson were able to help me put it together for you. Having said that, I think
that this method may be used often. The method should be appealing to someone getting ready to
buy a build up a new bike. One of the reasons for varying success may be that some mechanics lack
the skills or/and patience needed to set the derailleur precisely. In my case, the VeloParts adapter
was appealing because Leroy guaranteed that it was easy to install and would work perfectly. I also
already had the cassette and derailleur. The trade off was that it cost me $40.00