Tässä muuten lainaus escapen artikkelista vielä. Siis miksei flattopissa voi käyttää vanhoja tulkkeja ja varmaan selittää myös sitä, miksei eaglea kannta ajaa .75 asti.

https://escapecollective.com/threade...ng-chain-wear/


This wasn’t such a big issue in the past when common roller sizes were standardised at approximately 7.6-7.64 mm, however, SRAM changed that with its 12-speed chains which feature 7.7 mm (Eagle) and 7.9 mm (Flat Top and T-Type) rollers. That 7.7 mm figure is also seemingly applicable to Campagnolo, at least of the 11- and 12-speed chains I’ve measured. If using a two-prong chain checker, the increased roller size of a newer SRAM Flst Top chain will add .2 mm to the measurement, meaning your chain checker will only show wear at a far later point than desired.