Interesting, I think I'll try it. The cone adjustment, that is. If it doesn't work, have a beer
and try it again. If it doesn't work, have another beer
and repeat as necessary. Simply stop when you can't tell whether the gears are slipping, or don't care any more.
The owner's manual should suggest which beers go with which hubs, but as a general rule of thumb:
SA: Bass, Smithwicks...maybe Guinness.
Shimano: Kirin, Asahi
Older Sachs/SRAM: any unfiltered Hefeweizen.
Newer SRAM: Anchor Steam; Sierra Nevada...sometimes Hefeweizen will still work.