|Campy 8-speed/Shimano 8-speed compatibility||rtyszko|
Sep 28, 2002 8:01 AM
|I've ridden a campy 8-speed cassette/wheel with my 105 group intermittantly over the past 5 years without any apparent problem. Am I doing any harm/excesive wear to the chain and/or derailleurs? I ask because the cassette is worn and needs replacing (Is excelsports.com the only place to find them?) and I'm wondering whether it's even worth it. I have two other wheel sets, but I like the campy hubbed ones because they're great for the fowl weather as "beaters" at this point.
Sep 28, 2002 1:19 PM
|Campy 8 speed cog are 1.9mm thick with 3.1mm spacers, which produces 5.0mm center to center spacing. Shimano 8 speed cogs are 1.8mm thick with 3.0mm spacers, which produces 4.8mm spacing. The .2mm difference is 4% per shift.
Since the shimano derailleur undershifts by .2mm on each shift, the error could accumulate to as much as 1.4mm (28%)after 7 shifts. To minimize the error, the derailleur should be adjusted to be centered in the middle of the cassette to distribute the error between up shifts and downshifts.
You can buy a spacer kit from brandfordbike.com that will eliminate the spacing error, but it cost about $25. Brandford also has new record cassettes for $50.
Personally, I wouldn't invest that much in an old wheel.
|re: Campy 8-speed/Shimano 8-speed compatibility||curlybike|
Sep 29, 2002 7:30 AM
|Branford bike did have them. Your LBS can get them from QBP or Ochsner. I am using the opposite combination. Campy shifters and S cogs. You will not hurt any thing by doing as you are. Shimano hubs seem to seal out water better than Campy from my experience.|
|Right on, thanks you two. (nm)||rtyszko|
Sep 30, 2002 4:21 AM