oldtrekguy

Hello,

I've noticed that Campy has started selling groupsets and chainsets that are labeled "HO" (Hydraulic Optimized).

They explain that it is designed for bikes with 142 mm dropouts, but they will work with rim brakes as well.

I have never seen a "HO" set in real life, so I am having a difficult time understanding how the chainline is not way off for rim brake applications with 130 mm dropouts.

Campy also claims that HO does not change the Q-factor.

Could someone explain how they achieve a decent chainline and the same Q-Factor with the same chainset?

Thanks!

jad3675

As far as I can tell from my Potenza HO groupset...it's exactly the same as a non-HO groupset. Campy likes to change names around - like in the motorcycle world, where the newest model has BNG (Bold New Graphics!) over the prior model, but nothing has changed.

Remember, 142mm is just 135mm dropout spacing with 3.5mm alignment spots for the axles.