Ksyrium Elite Freehub
Bit of a worrying moment a fair few miles from home the other night when the freehub wouldn't engage on my 2013 Ksyrium Elite. Pedals going round, nothing going on at the rear, pawls not catching. Could have been a long walk. It engaged again all by itself a few hundred metres later.
Got home and stripped it down. This is what I found:


Thick crusted black stuff. Really difficult to clean off. Managed to scrub it all clean, apply a bit of lube and re-assemble. All is well now and running very nicely
Question is, given that I believe the cassette to have been fitted correctly etc, with no play in anything, how on earth could the above have happened after only about 4000 miles. I've never seen a freehub look like that before. I've never had this one apart before either.
Any ideas?
Got home and stripped it down. This is what I found:


Thick crusted black stuff. Really difficult to clean off. Managed to scrub it all clean, apply a bit of lube and re-assemble. All is well now and running very nicely
Question is, given that I believe the cassette to have been fitted correctly etc, with no play in anything, how on earth could the above have happened after only about 4000 miles. I've never seen a freehub look like that before. I've never had this one apart before either.
Any ideas?
2020 Reilly Spectre - raw titanium
2020 Merida Reacto Disc Ltd - black on black
2017 Cervelo R3 DI2 - black & white - for sale
2015 CAAD8 105 - very green
The departed:
Boardman CX Team - sold
Cannondale Synapse - broken
Cube Streamer - stolen
Boardman Road Comp - stolen
2020 Merida Reacto Disc Ltd - black on black
2017 Cervelo R3 DI2 - black & white - for sale
2015 CAAD8 105 - very green
The departed:
Boardman CX Team - sold
Cannondale Synapse - broken
Cube Streamer - stolen
Boardman Road Comp - stolen
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I tend to relube them with a very light mineral oil, and make sure a little goes on the nylon washer that presses against the rubber seal to reduce the chance of Mavic DeathWail.
Mavic freehubs do need a little bit of regular cleaning and TLC, they aren't the best sealed units out there.
2020 Merida Reacto Disc Ltd - black on black
2017 Cervelo R3 DI2 - black & white - for sale
2015 CAAD8 105 - very green
The departed:
Boardman CX Team - sold
Cannondale Synapse - broken
Cube Streamer - stolen
Boardman Road Comp - stolen
A quick strip down, clean and re-lube doesn't take that long.