dkoloko, where can I find that Berto reference? Google fails me.
Was in Bicycling Magazine; reference to test not done by Bicycling. Drivetrain, incidentally, means more than chain. As to trouble to wax, of course not cleaning shortens time re-lubricating. Waxing isn't that much trouble for me. Touring, I have my stove out, my pots out; little trouble to unsnap chain connecter, give a quick swish of cloth to knock out any outside grit on chain, and pop in pot in wax can to simmer. As to those who say one rain removed wax, for me, takes an extended downpour for chain to need re-lubing. My estimate of 500 miles between waxing, means surviving heavy rains, means may have ridden more than 500 miles before needing to re-wax; maybe less, not a lot less. My worst experience waxing involved a New Hampshire bike shop. Mechanic seeing clean chain surmised chain needs lubrication, and poured so much liquid lubricant on chain that it sprayed lube for days in spite my wiping chain number of times.