New-Old-Stock Campagnolo (Campy) Centaur Century Gray (175 mm) Triple Crankset with Ultra-Drive 50x40x30 Chainrings
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Product Description:

Listing Update...I've been getting some questions concerning the vintage of the Centaur parts in this Century (anodized) gray finish. Based on shop catalog research, it appears the Century gray finish was introduced in 2004 and was still available through 2006.  As most folks probably already know, 2007 was the year Campagnolo began it's crankset migration to the Ultra Torque design and this also appears to signify the end of the Century gray finish.

This offering is for a new-old-stock Campagnolo (Campy) Centaur "Century Gray" triple crankset with 175 mm crankarms and 50x40x30 chainrings. The crankarms are made from a forged aluminum alloy, so they should be fairly strong and their finish is a nice anodized gray. These cranksets were made during Campy's 10-speed era, but it's really their chainrings that determine drivetrain compatibility (so please see notes below concerning drivetrain adaptability). Please also note the Centaur crankarms are the first (or entry-level) model that Campy considers among it's higher-end offerings. This is not to say the Centaur groupset is on par with Chorus or Record, because it's not...but Campy did see fit to equip the Centaur crankset with Ultra-Drive chainrings (as standard), which are generally reserved for Campy's better quality crankset offerings. 

Some ther specs worth noting include the English threaded bolt-holes for 9/16" pedal spindles and the square-tapered holes for a bottom bracket with an ISO tapered spindle. Then there is the very important bottom bracket spindle length compatibility specification to ensure proper chainline. The short answer is Campy recommends a couple of different spindle lengths, depending on the frame (and specifically seat tube diameter) specifications. More specifically, this triple crankset should be matched with Campy's shorter (111 mm) cartridge bottom bracket from this era when the crankset is going to be mounted on a frame with a smaller (28.6 mm in diameter) seat tube. Although, in those cases where this crankset will be mounted on a frame with an oversized (i.e., 31.8 mm or 34.9 mm in diameter) seat tube, our Campy shop catalogs indicate the matching cartridge bottom bracket with the longer (115.5 mm) spindle length is preferred.

As mentioned above, the quality of this Ultra Drive chainrings is excellent. The advanced design/geometry on the large and middle chainrings include multiple pins/grooves that facilitate the upshift of the chain to these larger chainrings, as well as set points of specifically designed chainring teeth to facilitate the downshift to the smaller chainrings. We should also mention these are "cut" rings (as opposed to "stamped", like Campy's lower-end rings), so their final production/machining is extremely precise. This will result in minimal drivetrain noise (from chainring teeth/chain interaction), even wear and precise shifting for the life of the chainrings.  

The other interesting specification that is probably not as widely known concerns the thickness of the chainring mounting arms. More specifically, because we noted 9-speed and 10-speed Ultra-Drive chainrings do not measure the same thickness at the bolt holes, we believed Campy deliberately maintained the same thickness of their higher-end crankarms...at the chainring mounting points...to allow for chainring variances to achieve the desired spacing for a 9-speed drivetrain vs. a 10-speed drivetrain. Sure enough, caliper measurements confirmed there is very little difference between higher-end Campy 9-speed and 10-speed crankarms (at these chainring mounting points). Additionally, we have been told the same holds true for Campy's higher-end 7/8-speed crankarms...meaning their thickness at the chainring mounting points is relatively consistent with the aforementioned 9/10-speed crankarms. Now this is not necessarily that big of a deal, as spacers are available to push chainrings farther apart to achieve appropriate spacing for nearly any drivetrain. As a result, even Ultra Drive 10-speed chainrings may be fitted to a 7/8/9-speed drivetrain with appropriate spacers inserted/installed to accommodate the wider chain that is generally used with these older drivetrains. Please also note when installing spacers, the most common practice on a double or triple crankarm is to insert them between the large chainring and the crankarm.

As for condition, these crankset were bulk-packed, so expect some shopwear that appears more noticeable...probably due to the contrast between the anodized gray finish and the silver markings from scratches/scuffs. We believe their overall appearance is still fairly nice, but upon close inspection we do note some scratches/scuffs on most of these offerings. Listing Update...I am nearing the end of my stocks in these triple cranksets, so I have begun updating the pictures to reflect the next one that will sell/ship. To this end, I can confirm this next offering shows fairly well. I see a few small scratches/scuffs on the right crankarm...near the pedal spindle opening and I am sure there are a few other marks I am not noticing...but the overall cosmetic appearance is still nice.

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