peetee wrote:Yes, within 200 miles. A journey of a couple of miles on a wet road may spray a chain with a significant amount of road grime. Once you clean it with a clip in chain device the cleaning solution can be washed into the chain gaps and the grit with it. Unless you thoroughly rinse the solution out, and dry it with heat, the cleaning solution clings to the inside of the chain parts, especially between the pins and rollers. Then its free to mingle with the new wet lube and make its job far less effective. The method I use is pretty reliable and I have used it at work for years with no negative comments so far.
I did once forget to rinse and dry (3 jobs on the go at once ) and the chain wax I applied never set and plastered the rim with yuck when I ran through a gear index check.
I've used a clip chain scrubber for donkeys and never had the problems you mention,but I follow a set system which takes no more than a few minutes to complete.
Fill the scrubber with White Spirit,run the chain through it,then repeat,until the WS in the scrubber looks cleanish(I keep any dirty WS in a jam jar where it's let settle and reused,again and again until it's too bad to reuse ie; when I can't see through it after settlement) .
I then run the chain through an old rag to remove any excess WS.
The chain then gets a double dose of aerosol TF2,with any excess wiped off with the old rag.
I remove the chain to clean when the rest of the drivetrain is looking a bit grubby,then I put it in a wide topped plastic bottle and half filled with AS and given a good shake,then repeated until the AS is cleanish,wipe,let dry whilst the rest of the drivetrain is being cleaned then refit,double dose of TF2 wipe off excess and let dry before being ridden.
I never lube my chain before a ride,always after.
I usually get between 4,000,to 4,500 miles out of a Sram 971 chain and three chains before I need a cassette.
EDIT ,I can't say that I've ever noticed much difference between a worn chain and a new one if both are lubed up.However gear changing is a different thing,a worn chain usually has a lot more side slop and as such gearshifting can be "ponderous" at worst and slow at best.