This is the first iteration of the Neutron with an alloy hub. I have them.What year hub? Did the crack go through the hub, or only just the plastic shell? Least I thought the plastic outer layer was just a non load bearing cover...
They looked like my ca. 2006 Zonda set I bought forever ago and retired.This is the first iteration of the Neutron with an alloy hub. I have them.
The current "Ultra" has a different shell and flange setup. I have them too.
Not sure the age but could be up to 15 years?
Plastic shell? You can see the axle in the picture. Traditional hubs have a flange that is drilled for the spokes, but these hubs use direct pull spokes that connect to the hub shell (no flange). In a traditional hub, the spoke forces are on the flange but in this design the forces are in the hub shell. When there is high stress or a manufacturing failure (e.g. grain lines in the metal) this will be the failure mode.What year hub? Did the crack go through the hub, or only just the plastic shell? Least I thought the plastic outer layer was just a non load bearing cover...
I've been using Campy equipment for a long time, and active in the forums for a long time also, and yours is the first ever case I've come across like this.Good call, so you would tend to believe this is common problem with their hubs?
I think he means work-hardened; as I understand it, it's when the crystalline (?) structure of the metal becomes distorted due to force(s) on the metal--e.g., the bending of a coat hanger; the force of bending compresses the structure on one side, and this cannot be uncompressed through "re-bending," so the coat hanger will never be like it was before.Aluminium fatigue, probably. These are rather old wheels.
I have two sets with the same hubs, a 2003 Eurus and a ~2005 Nucleon.
Cold set: You mean galvanic corrosion "welding" two different metals together?
Cold set in common usage means "bent without heat." So you can cold set a steel frame to widen the rear triangle. Cold set aluminum is usually a dangerous situation because when you bend it, you damage it (unlike steel). A cold set aluminum rim would be out of round or out of true when you removed the spokes. To build such a rim into a round and true wheel you might see significant variations in spoke tension.What do you mean by cold set?