I recall asking about x ring/o ring chain maintenance on this forum many years ago when I first installed a sealed chain.
My thought was that chain lube could be a thing of the past as we only lube to keep the pin and bushing interface from wearing quickly.
With sealed chain that interface is permanently lubricated with the ideal grease in a perfectly clean state. These chains might last fifty thousand miles or more if the seals did not fail at around 20,000 miles.
Not complaining about 20,000 miles of chain life though.
20,000 miles is a lot of riding on an old air-cooled bike!
Jim Comstock felt that without continued chain lube the sprockets would wear very quickly. This made sense, so I have continued to apply a chain lube every 400 miles or so.
That has worked well to date.
So with this maintenance free chain what happens to sprocket wear if we do not use lube?
It seems we already had maintenance free chain with any sealed chain, if the lube was just for the sprockets.
Also, I read above that CNW Matt recommends against using chain lube on sealed chains but is in favour of " periodic cleaning of the chain"
What mileage would " periodic cleaning " correspond to?
If out on the road on a trip I try to spray lube the chain every day, or at least every other day. This might be every 350 miles or every 700 miles. If foregoing lube, should the chain be cleaned at this kind of interval?
And with the cleaning rather than lubing method, the sprockets are running dry, same as with the " no maintenance" BMW chain.
Does sprocket wear increase?
Glen