The_Guru

Hi Mechs,

I purchased a used Cannondale Saeco CAAD4 (2002 model) a couple of years ago, which came with Ksyrium SSC wheels (no red spoke). The hubs are Mavic, the groupset of the bike is Campy Record, and I've identified the chain as being a Campy ultra 10 chain. The cassette it has is a 13/26, and I wanted to get a larger sprocket for an alpine ride I'm doing in a few weeks time; however I cannot determine what cassette to get.
The lockring is a Mavic lockring, and there are no identifying markings on the cassette other than the tooth-count on each sprocket. The range is 13,14,15,16,17,19,21,23,25,26, and the 14 and 15 sprockets have holes drilled under each tooth, I guess to save a bit of weight. I don't think the large 4 sprockets are any other material than the smaller 6 (eg, Titanium etc).

Any ideas as to how I can identify the cassette ?
Does it have to be removed for me to see a label of sorts ?
Will a new Campy cassette definitely be compatible with this hub ?

Many thanks...

Sekine

If you have a local shop with a campagnolo cassette in stock, that would be ideal, they could check to see if that fits on your current hub, and failing that, they can find out what fits and order you one of pretty much whatever you want and have it there in less than a week.

Aside from that, I think photos of the cassette would be the next step?

thebearnz

By the sounds of it, the Freehub is probably Campy (since you are running a campy groupset). Whether or not the current cassette is genuine campy or a campy compatable is another story. Photo would help. Otherwise gets some degreaser and a toothbrush, the Shimano's tend to have things like FF or FE stamped on each sprocket as well as the sprocket size

HillRider

Campy makes a 13x29 10-speed cassette that may fit your freehub if it has Campy compatible splines. Mavic made it's own "Campy Compatible" freehub for a while but it only took Mavic's own Campy spaced cassette.

BTW, are you sure of that tooth count on your current cassette? .....21,23, 25, 26 doesn't sound right. There is no reason for both a 25 and a 26 unless someone "customized" it.

Campy 13x26 is 13,14,15,16,17,18,19,21,23,26. The 13x29 deletes the 18 and adds a 29.

The_Guru

Yep, I was about to order a Campy Veloce 13/29 for the infrequent use I need, but then realised when I looked at my sprocket that I may not have a genuine-Campy-compatible fitting.

Here are pics I took (click through for fullsize):








All assistance appreciated :-)
Worst case, I'll take it to a store and ask, but I'd love to be able to identify it "myself" first :-)

Thanks,
G

The_Guru

So, while out cycling today I decided to stop at a bike shop to ask. They removed the lockring and identified the sprockets as Mavic (10 individual sprockets), while the freehub is Shimano-compatible from Mavic. Turns out I can probably replace individual sprockets as needed, and Mavic makes a 28t rear sprocket. Yay.

DannoXYZ 

I agree with Hillrider, the 26t seems to be a retro-fit to the original cluster. Replacing it with a 28t would make more sense.

cascade168

You need a Campy compatible freehub, made by Mavic. This is what Mavic terms an "ED10" type, as opposed to an "M10" type. "ED10" = ExaDrive 10 speed. With this freehub you can just go ahead and use Campy cassettes. If your local shop is on the ball they should be able to order you an ED10 freehub and swap it with the M10 freehub you now have on your wheel. ED10 type freehubs (as made by Mavic) are readily identifiable by four pair of splines that are separated at 90 degree angles on the freehub shell. Three of the four pair have "same height" splines and one of the pair will have one shorter spline. The Mavic M10 type freehub shells look pretty much like any Shimano freehub on the outside.

Again, the ONLY difference between Mavic wheels that are set up for Shimano M10 and Campy ED10 is the freehub shell itself, AND, they are easily interchangeable. If necessary, just order what you need and get it swapped out.

The applicable Mavic part numbers for the freehub shells are as follows:

ED10 ....... M40591
M10 ....... M40592


Edit: You CAN stick with the freehub shell you now have (M10) and use it with your Campy groupset IF you buy new MAVIC cassettes/cogs. But, if you want to use a Campy cassette, you will have to go to the ED10 freehub shell.

The_Guru

Thanks for the info - that's really useful.
Why, however, would I change to an ED10 when I now have the capability of simply keeping the cogs I have, and buying only one or two to complement them? If I changed to Campy, I'd have to buy a new shell, and possibly two new cassettes to get the ranges I want?
What benefit would I get from having a Campy cassette ?

cascade168

Well, as any Campy purist would tell you, going to "all Campy" will give you some pretty smooth shifting. If you're going to pay all of those millions of dollars for a drive train you should get something, right?

The two advantages to Campy are:

1. Slightly (think miniscule, tiny, very small) smoother shifting.
2. Better trim on the FD. This is the real advantage to Campy, IMHO.