On Monday, November 5, 2018 at 8:33:43 PM UTC-5, wrote:
BTW should the cassette be completely dry optimally even tho it won't happen? No oil, chain only on the inside?

It doesn't hurt to keep a LIGHT coating of anti-rust (oil) on the cassette. For the chain the lubricant/oil needs to be between the roller and the pin or wherever the links move/pivot. Again a light coating of an anti-rust (oil) is good for the outside links of the chain too. What you DON'T want is so much oil that it attracts dust and turns it into the slurry that's a most excellent grinding compound. IMHO, more chains and parts have been ruined by over lubricating them than have been by letting them go dry.

Cheers