At the article of LightWeights I saw the following picture.

Armstrong's mountain machine with Lightweights on the TdF 2002

What kind of cassette is that? Is it blue? Or is it just the oil?

It's probably TA Kheops

Are the TA Kheops alau. with alau. spacers or is it a single piece of alau.
machined out?

There aluminum with aluminum spacers. The nice thing about them is you can replace individual cogs, so when they wear out you don't have to buy a new cassette.

_________________
MAMA SAID KNOCK YOU OUT! HUH!

Recently, I have Bought the new cassette produced by Tiso
The model is K7 ultra 10V (for Campagnolo Record 10V 12-25)
Claimed Weight (11-23) 99gr
Real Weight (12-25) 121gr
The cassette works very well but it costs 203,90 Euro !!!!!!

Mandi
Delpi

The TA Kheops is only 89 Euros at total cycling.

_________________
MAMA SAID KNOCK YOU OUT! HUH!

If properly assembled and with regualr mantainance (cleaning) also Marchisio Cassettes are very good. They're single aluminium cogs, with plastic specers, fitted on a Campy / Shimano adapter. So, if you change your freewheel you only have to buy new adapters, and not the entire cassette.

Bye, Benz.