@Andrew Major I think what Vik has to say about always checking chain wear is best advise from what I've seen. I go about it in a different way. I buy 4 moderately priced chains up front with a brand new drivetrain and rotate them all through. Watch the last video on this page about increasing chainring life: [https://absoluteblack.cc/chainrings.html](https://absoluteblack.cc/chainrings.html)
From what I recall, you only want about 1/3 of a bearing filled with grease. I guess this is due to the grease interfering with the balls rolling around on their races, causing them to skip and slide instead of actually rolling. Thus you drastically decrease their life.
This is the exact failures I would see on my GXP bottom brackets. No amout of grease fixes this issue. [https://www.youtube.com/watch?v=dkAxXNYzBGg](https://www.youtube.com/watch?v=dkAxXNYzBGg)
I would consistently kill bearings on my V1 bronson frame. On my V3 bronson frame I've yet to have anything but silky smoth bearings after 15 months of ownership. My V1 had an issue where I think it was flexing under load, binding the bearings, and destroying them prematurely.
Edit: I'm in the east coast of the USA and REI has boeshield T9. I may give it a shot for the times I don't wax my chains to see how it compares. Its a bit pricey but I'm always down experimenting.
Edit X2: I have not had good luck with any Enduro bearings. I try to stick with, NTN, FAG, SKF, Koyo, and NSK. You need to order through an authorized distributor as their are plenty of fakes out there, looking at you Amazon!
Jan. 16, 2020, 2:38 p.m. - dan_l
@Andrew Major I think what Vik has to say about always checking chain wear is best advise from what I've seen. I go about it in a different way. I buy 4 moderately priced chains up front with a brand new drivetrain and rotate them all through. Watch the last video on this page about increasing chainring life: [https://absoluteblack.cc/chainrings.html](https://absoluteblack.cc/chainrings.html) From what I recall, you only want about 1/3 of a bearing filled with grease. I guess this is due to the grease interfering with the balls rolling around on their races, causing them to skip and slide instead of actually rolling. Thus you drastically decrease their life. This is the exact failures I would see on my GXP bottom brackets. No amout of grease fixes this issue. [https://www.youtube.com/watch?v=dkAxXNYzBGg](https://www.youtube.com/watch?v=dkAxXNYzBGg) I would consistently kill bearings on my V1 bronson frame. On my V3 bronson frame I've yet to have anything but silky smoth bearings after 15 months of ownership. My V1 had an issue where I think it was flexing under load, binding the bearings, and destroying them prematurely. Edit: I'm in the east coast of the USA and REI has boeshield T9. I may give it a shot for the times I don't wax my chains to see how it compares. Its a bit pricey but I'm always down experimenting. Edit X2: I have not had good luck with any Enduro bearings. I try to stick with, NTN, FAG, SKF, Koyo, and NSK. You need to order through an authorized distributor as their are plenty of fakes out there, looking at you Amazon!