Dan1980 wrote:
With that, the bearings lasted for about a year regularly riding in the Peak and being somewhat lacking in the cleaning department.
Take note of his last words,folks.
So many people are just far too handy with a hose.If you hose the bike,dont hose past the seatclamp.Who freekin cares if the saddle is filthy underneath!
Tape over the split at the top of the seat tube and clean/grease the post often.
Up front, dont go spraying water any higher than half way up the headtube. Same as the front.. if the shifters are filthy,water spraying into them aint going to help it. (even xtr arent sealed so keep the hose well away)
The back of an a-head stem and the split wedge on headsets arent the best design for keeping water out of the headset/headtube so dont bother hosing it down. If you do,water will work its way into the headtube,run down the breather holes and eventually fill up the bottom bracket.
If you fill the bottom bracket with enough water then the sleeve will be submerged when stationary.. Not to mention all the soakings the entire sleeve will see under use. You can clart the bearing cups with extra grease from the inside (lots can be pushed in by finger next to the inner rubber seal and the alloy cup) before fitting the unit to help keep the water away but no matter what quality of bb unit you buy into.. a hose blasting around the top part of a headset and seatpost split wont do you any favours.
Also measure the width of the shell BEFORE fitting the unit with digi verniers and take a measurement of the bb unit with the correct number of spacers. If you put 2+2 together you can work out how much the o-rings are actually doing their job once the unit is fitted.Sometimes too many spacers or too little could be compressing the sleeve (allowing it to deform once tightened – meaning that its going to let water in past the o-rings) or one end of the sleeve wont be fitted into the cup correctly at all.. meaning that the o-ring is just a waste of time.
I have soaked some of my bikes under normal use (not with a hose) and the shimano bb units fitted years ago with extra grease from new still works like new (one nearly 5 year old now)
Once hosed down to destruction, most bb units seem to fail when they have been sitting around for a week+ at a time.This gives them time to rust up.
Now if i dont ride my bike at all ;O)…then surely all my bb units must be rusted solid.
<awaits flaming from folk that know me :O)