C40 headset questions

[jischr]

I'm totally ignorant when it comes to headset sizes/variations. Colnago C40 with 1 inch Colnago carbon fork; what dimensions are important for specifying a replacement? Any Colnago specific quirks to take into consideration? Any manufacturer harder to install than others? Bottom race installed on the fork easy to remove or is it a LBS job only?

Thanks,

[Pegoready]

There is nothing specific or special about a Colnago C40 head tube. It's just a 1" head tube and accepts external cup headsets.

Assuming you have a threadless setup i.e. the stem clamps to the steerer tube and not a quill stem, this would work:

https://avt.bike/products/chris-king-nothreadset-1-headsets

as would this:

https://www.jensonusa.com/FSA-Orbit-X-1-Threadless-Headset

Crown races are best removed at the bike shop, unless you think you'll do it often, then invest in one of these:

https://takeahikeshop.com/products/park-tool-adjustable-crown-race-puller?_pos=1&_sid=06276c1b1&_ss=r

Or do it the ghetto way with a screwdriver:

https://www.youtube.com/watch?v=9G5R8-qitgM

If you're having a bike shop install the new headset, I'm sure they'll be happy to remove the old crown race for you at the same time.

[oldpotatoe]

I'm totally ignorant when it comes to headset sizes/variations. Colnago C40 with 1 inch Colnago carbon fork; 1)what dimensions are important for specifying a replacement? 2)Any Colnago specific quirks to take into consideration? 3)Any manufacturer harder to install than others? 4)Bottom race installed on the fork easy to remove or is it a LBS job only?

Thanks,

1) any 1 inch threaded headset with a fork crown race of 26.4mm, like a Campagnolo Record one..a Colnago needs this
2) No
3)..not really, need proper tools to remove old one and press in new one
4) Best to let LBS remove and replace..

[C40_guy]

The only issue with a Colnago carbon fork is that you need to use the Colnago expander plug. You can't use a star nut and you will not be able to find a third party expander plug that fits into the slightly overbuilt steerer tube.

They are difficult to find, and NLA from Colnago...