Campagnolo Long Cage RD max tooth count

[anomaly]

Has anyone successfully shifted a 32t cassette with a Campy long cage RD? I'm building my new touring bike and I'll be damned if I can find something from Shimano that I find attractive. An older silver LX looks okay but not nearly as nice as a Campy Racing rd.

[Ralph]

Are you calling a Campy medium cage a long cage? Campy made both recently in 10's. I believe the Racing T's (8's and 9's) were medium cage.

With a double front, I'm sure a med cage would handle a 32. Long cage for a triple front....depending on length of hanger, and how experienced you are in making these things work with different lengths chain, etc. Campy only talks about using them with a 29 tooth max rear cog. I have one bike I know I could make a triple front work with a rear cassette with 32 cog. I have another bike I'm not so sure I could make a triple front work with a 32 cog in the rear cassette. It has a shorter hanger.

[Dave]

I don't think there's any difference in the upper parallelogram, so the max cog possible with a medium and long cage should be the same. It's the "B" screw mechanism that allows both of them to swing back far enough to clear the 29T cog.

The radius of a 32T cog would be 6mm larger than a 29T. Campy RD's are supposed to work with hanger lengths from 24-28mm. If you have a frame with a 28mm length, it might work, but it depends on how much extra clearance Campy has designed into the B screw mechanism.

The medium cage has at least 35T of wrap capacity, and the long cage has at least 38T. All RD's have at least another 3T of wrap to handle the worst case chainstay length.

[oldpotatoe]

Has anyone successfully shifted a 32t cassette with a Campy long cage RD? I'm building my new touring bike and I'll be damned if I can find something from Shimano that I find attractive. An older silver LX looks okay but not nearly as nice as a Campy Racing rd.

As has been mentioned, the 'Racing T' is really a medium cage and you may not have enough chain for big-big with that.

Comp RD is long cage(95mm).

I have a good customer(aren't they all?) who has 10s ERGO, a long cage(95mm ctr bolt to center bolt) Campagnolo RD, a shimano rear hub and a 11-34 9s cogset. With a shimano 9s chain it shifts wonderfully and has no problem with the 34. Triple up front with 48/36/24. Frame is a Waterford T-14.

Chain isn't too long or short, no droop in small/small and enough chain for big-big. Went all over Sweden last year unsupported w/o any problems.

[Ken Robb]

As has been mentioned, the 'Racing T' is really a medium cage and you may not have enough chain for big-big with that.

Comp RD is long cage(95mm).

I have a good customer(aren't they all?) who has 10s ERGO, a long cage(95mm ctr bolt to center bolt) Campagnolo RD, a shimano rear hub and a 11-34 9s cogset. With a shimano 9s chain it shifts wonderfully and has no problem with the 34. Triple up front with 48/36/24. Frame is a Waterford T-14.

Chain isn't too long or short, no droop in small/small and enough chain for big-big. Went all over Sweden last year unsupported w/o any problems.

So does he have an extra "click" for the missing tenth cog? Does a 10spd. Campy shift 9 spd. Shimano better than a nine speed Campy shifter shifts 9speed Shimano?
I tried 7800 brifters and 10 speed Campy freewheel and cassette and while it "got" all 10 gears there was quite a bit of chain noise in the last 2 cogs at either end of the cassette.

[Ahneida Ride]

I am running Campy 2002 Record triple
TA Zephyr crank ...

cogs = 13-29
rings = 48 / 36 / 22

Shifts well.... even 22-13 works. as well a 48-13

I hope this is of some help.

[oldpotatoe]

So does he have an extra "click" for the missing tenth cog? Does a 10spd. Campy shift 9 spd. Shimano better than a nine speed Campy shifter shifts 9speed Shimano?
I tried 7800 brifters and 10 speed Campy freewheel and cassette and while it "got" all 10 gears there was quite a bit of chain noise in the last 2 cogs at either end of the cassette.

Ctr cog to ctr cog differences are less with Campag 10 and shimano 9 than Campag 10 and shimano 10. yes, adjust RD limit screw for only 8 'clicks(9s).

Done it many times, particularly early 2000 when Campagnolo 10s was new and lots of people had shimano 9s wheels. In spite of the naysayers of the time( and even now), gotta try it and often it works very well.

[Dave]

Shimano 9 cog spacing is 4.32mm, Campy 9 is 4.55mm. Campy 10 is 4.12mm and Shimano 10 is 3.95mm. There's not a lot of difference. Both Campy cassettes require significantly more RD travel.

A overshifting drivetrain is usually more tolerable than an undershifting one, so it's always been more tolerable to use a Shimano cassette with a Campy drivetrain than the other way around.

[Ralph]

Dave....is that Campy 10 4.32 MM spacing and Shimano 9 4.32 MM spacing center to center? Or just the spacing between the cogs? I assume the cog thickness is a tad different.

[Dave]

I goofed. Campy 10 has 4.12mm spacing. Spacing is always measured the same c-c. It's the total of 1 cog thickness and 1 spacer.

Campy 9 and Shimano 9 cog thickness is nearly identical, about 1.75/1.78mm. Campy made an extremely small change to the cog thickness with 10 speed, while Shimano reduced their cof thickness by 10% to 1.6mm. Campy 11 cogs are the same 1.6mm.

[dave thompson]

Has anyone successfully shifted a 32t cassette with a Campy long cage RD? I'm building my new touring bike and I'll be damned if I can find something from Shimano that I find attractive. An older silver LX looks okay but not nearly as nice as a Campy Racing rd.
Are you using Shimano components? If so you may want to look at the 6700 and 7900 rear derailleurs as Shimano has changed the geometry of these derailleurs. I've been running 6700 short cage derailleurs on 3 different bikes using a compact crankset and 11-30 and 11-32 cassettes on these bikes with no issues. The B screw had to be screwed only about half way.

[anomaly]

Are you using Shimano components? If so you may want to look at the 6700 and 7900 rear derailleurs as Shimano has changed the geometry of these derailleurs. I've been running 6700 short cage derailleurs on 3 different bikes using a compact crankset and 11-30 and 11-32 cassettes on these bikes with no issues. The B screw had to be screwed only about half way.
Good to know. I'll be using Riv friction bar ends, a Record triple front, Phil wood (shimano) rear hub w/ a 11-32 SRAM 9 speed cassette. Just trying to get a nice looking RD with the setup.

[dave thompson]

Good to know. I'll be using Riv friction bar ends, a Record triple front, Phil wood (shimano) rear hub w/ a 11-32 SRAM 9 speed cassette. Just trying to get a nice looking RD with the setup.
If you're using a triple, you most likely would have to use a long cage 6700/7900 derailleur.

[anomaly]

If you're using a triple, you most likely would have to use a long cage 6700/7900 derailleur.
I'm not really interested in Shimano derailleurs from a looks perspective. It seems like people have successfully shifted a 32t rd using Campy so I'm going that route.

[Larry]

I am running Campy 2002 Record triple
TA Zephyr crank ...

cogs = 13-29
rings = 48 / 36 / 22

Shifts well.... even 22-13 works. as well a 48-13

I hope this is of some help.

Where can you buy TA Zephr crank sets. I want some really low gears.
Perhaps in a double.