Campag 2007

[R2S2]

The best I guess to do would be to take the weights of the 2006 components, and factor in the weight reductions quoted here:

http://www.campyonly.com/rumors/2006/2007_gruppos.html#WEIGH T

[SwissVan]

 

Quote R2S2 - If anything, assembly will be much easier, and only a complete t(w)it will be able to get it wrong. There are 20 splines in the joint, so the least you could get it out by when assembling is 18 degrees - come now, even a beginner would soon enough notice if they had cocked this bit up!

There are a lot of t(w)its out there that have no idea how to wash their bikes, let alone what a spline is or the DF to notice the splines are not meshing while they nip the 2 halves.

koF some people don?t even notice they have their helmets on back to front never mind that the crank arms are a few degrees out from normal..

I suppose the saving grace is that most people would not do this themselves anyway and take it to the LBS.

Wonder what those clever little Jap fellows will come with in reply to this?

 

[R2S2]

Oh yes, another benefit of the new setup, other than of course weight, is that a hollow shaft is torsionally far more rigid than a solid shaft of the same diameter.  The benefit from this is that the power developed by the left leg will be transferred into the chainrings more effectively.

A solid shaft also deflects more when cantilevered, so the new shaft should further eliminate lateral crankarm deflection around the shaft center.

Empirically, you can expect a 30% improvement in both torque and deflection characteristics over a solid shaft.

R2S238923.5470486111