"Pete Biggs" a écrit:

Actually, from the description it sounds more like it has this sort of
thing:

http://www.chainreactioncycles.com/M...x?ModelID=2218

- Used for pressing the the stem down, which in turn loads the
headset beaings.

Apologies if I'm egg-suck teaching.

I think you're probably misreading between the lines.

"The headtube is slightly conical at both ends and a circular split bush
compresses into the headtube when the central allen screw is tightened."

Many threadless headsets one or more split conical compression rings to
provide radial preload when the top bolt is tightened. In a cartridge
bearing headset, the lower ring often replaces the crown race.

The Trek site says "VP semi cartridge":

http://www.trekbike.co.uk/2007/bikes...ID= 16&ID=255

and shows a headset with external cups and a tall conical spacer:

http://www.trekbike.co.uk/2006/bike_images/07_7200.jpg

http://www.bicyclestore.com.au/files...ges/d_2338.jpg

The VP site shows a similar looking headset, the Slimstak:

http://www.vpcomponents.com/images/ProdAD2.jpg

http://www.vpcomponents.com/headset_show.asp?pid=40

It's called semi-integrated beacause the cups sit flush with the head tube,
but it's basically a conventional Aheadset.

James Thomson