Does anyone on here have any epxerience of these in terms of longevity?
I'm considering splashing out on a Whippet and as they take a BB92 thought this may be a worthwhile question. In light of one of the comments on the On-One website where they suggest that after wet/middy rides you should remove the cranks and clean & re-lube the BB.
Seems a bit of a faff, considering you tend to come across rather a lot of mud & water in this country irrespective of the time of year.
You need to talk to Zesty owners for BB92 experience!
In my experience Shimano ones are not great, about 6 months life seems typical. A KCNC one I tried had a similar "top hat reducing thing" as the Shimano that vaguely acts as bearing cover. The best I've found are the ones from Enduro Fork Seals as they actually have something you could accurately call a seal protecting the bearings.
Enduro Fork Seals; http://www.enduroforkseals.com/id258.html
Thanks for that Timmys, the only one I can find is a Shimano one.
Other than those linked above, I've seen the various threads about the Zesty owners and their BB problems.
My mate has a BB30 on his Cannondale road bike and it's already creaking after a couple fo hundered of dry miles.
This may well be the deciding factor as I don't wanna be chaning BB's every few months & cleaning them every ride just to save 200g's on a frame.
I spent a while yesterday bashing the seized NDS Enduro bearing out of MrsP's Zesty and pressing in yet another new one. Think that one had lasted about 4 months in the SE, most of which would've made a Saharan nomad feel homesick.
Well that's pretty much sealed (pardon the awful pun) I reckon!!
I had a Enduro one in the Zesty for a year and I popped the bearings out a couple of weeks back they wer clean inside and ran smooth as new.
Shimano lasted a year (8 months of that was regular flusing with wet oil to keep them running).
With a Zesty much of the problem is the amount of water that gets down the seat tube. The slot has now been covered with electrical tape with a neoprene headset guard on top of that to stop the water running down the seat post.