No luck getting an answer in the tandem section so I'll ask here.
Campagnolo shifters, Campagnolo RD, but no campagnolo freehub. I have a Chris king tandem wheelset so switching freehubs(or driveshells as CK calls them)is out of the question. I have an orphaned set of 9speed campy cassette spacers, would I run into problems using a Miche shimano cassette with the campy spacers? If I'm not mistaken, Campy cogs are of a different width so even if I use campy spacers the spacing will be off, right?
tl;dr:help me build a 9 speed Campagnolo conversion cassette to use on a shimano hub.
Ps: Don't suggest using a Jtek, that's my last resort.
Campy 9spd overall width = 38.2mm centre-to-centre spacing = 4.55mm between centre of cogs cog thickness = 1.75mm spacer thickness= 2.8mm
Shimano 9-spd cog thickness = 1.78mm
Using the Shimano 9-spd cogs with Campy 9-spd spacers will give you c-t-c spacing of: 1.78 + 2.8mm = 4.58mm. That 0.03mm difference in c-t-c spacing won't be an issue as it's close enough. You'll need to shim the Shimano 4.34mm top-cog with integral spacer with an additional 0.2mm spacer to match the Campy spacing. Then you'll have a Shimano cassette with Campy spacing with minor variation.
To reduce any negative effects of compounding the differences as you sweep across the gears, adjust cable-tension so it shifts perfectly in the middle 3-cogs. Then you'd be compounding the variations only 4x in each direction.
Oh yeah! That's the cassette I was considering before, when I was going to use a jtek and a shimano RD. I can get shimano cassettes fairly cheap through work.
Edit: I cant tell if they are riveted or not from looking at the shimano technical docs. It just says up to 8 out of 9 are "secured". I've never had to worry about this with a cassette, so I don't really know how to tell without having it in my hands.
That would be me, I work in a shop, but i'd need to see it first.
Originally Posted by Sheldon Brown
Some Shimano flat steel sprockets and spacers are in bolted or riveted assemblies[...]. The bolts or rivets only serve to keep sprockets and spacers in order when the cassette is not installed on the freehub. Bolts or rivets can be removed to replace sprockets or build up custom combinations..
That's what I've been saying; they're just for convenience when the cassette's off the bike. My 9spd Ultegra cassette doesn't even have any provision for em; apart from the the three largest sprockets on a spider, it's all loose.