On 8/10/2019 6:17 PM, AMuzi wrote:

snip

To OP's quest for a _six speed_ drive chain my current recommendation is
the Wippermann 7.08 nickel plated chain. Those are new here so I can't
speak to longevity but they are fat (a feature for 5/6 freewheels) and
include a Connex snaplink. Nothing wrong with KMC Z33 for six speed BTW.
As chain gets skinnier, classic 5/6 shifting suffers.

Agreed, the KMC Z33 is fine for 5 and 6 speed freewheels, and the 8 and
9 (and 10 and 11) should be avoided. No upside in spending more for
poorer shifting.

The issue is that finding the older chains in a shop is often not easy
since 5 and 6 speed freewheels haven't been used in a long time. So
often they'll sell naive customers a 7 or 8 speed narrower chain and
assure them that it'll work fine.