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Right, last time i was out on the MTB, i noticed a lot of chain-slap if i back-pedalled, never happened before. Turns out the freehub was really stiff. Anyway, i took the freehub body off when i got home to figure out what's going on, expecting the bearings to be screwed, but it doesn't seem that they are. Basically, the freehub bearings are really stiff, but still completely smooth, no grittiness, no play, just stiff. The axle bearings are fine.
Anyone know why this would be? Of course, i could get new bearings and i'm guessing that would sort it out, but i'm intrigued why they'd suddenly get stiff like this without any other signs of bearing wear.
Ta
Is the axle-spacer washer still in there? IIRC on the XC's it sits on the axle between the hub body and freehub. It's about the size of a penny but with a big hole it it!
Other than that do the three pawls and their springs look to be fine?
Try taking freehub off, flushing the bearings well with WD40 to get them spinning freely, then go ride and see if ithe problem stops. If it does then just replace the 3 freehub bearings.
has something or some event conspired to knock the bearings in towards each other, crushing the spacer? When I serviced my XC freehub bearings and reassembled it they were really tight-turned out I had pushed the bearings in too hard so the middle spacer was compressed between them, a quick tap in the other direction reset the bearings so they turned freely.