Should you get a Ceramic Speed Bottom Bracket | FastereOnFriday 

Sorry for your bad experience, I assume ceramic speed would issue a warranty for a bb failure with such a low milage. But you are correct that you can get several DA bb for that price

The ceramics will not rust.

"Ceramic bearings have more friction after 1000-2000km compared to high end steel bearings." Why? Is this confirmed and tested? Thanks

Thanks. Data over feelings!

I don't think there is an issue with marginal gains adding up. It's about the cost-benefit relationship. If I pay $100 and get back $1,000, then it's a no-brainer, but the reality is no upgrade is going to give anyone a return in the multiples. I think most people need to think about it a bit more carefully before splurging if the upgrade is only going to make them a few seconds faster over a long distance, especially if they are not racing for podium places.

Thanks, I will add that suggestion to the list. Check back soon for the results :)

You are better off with Hambini imo

No it won’t be. But the steel races will be.

Time saving is not a linear relationship. As you get faster it takes an ever increasing amount of power to go slightly fast.

@@EricAbbottTri my point exactly... so what you are saying is that the difference of puttin 200 vs 300 in a linear system is 400 sec, but since is not linear for the cuadratic term is much less than that... so, the real ttime difference between a guy putting 200 vs 300 watts is less than 400 sec, lets say 180 which means 3 min diference in a half distance. that dosent make sance....

Actually, friction is a function of the normal force and velocity. If we assume cadence remains relatively constant and there is not a massive increase in normal force between a low and high power rider then the power needed to overcome the friction of the BB is relatively constant no matter the power input.

@@EricAbbottTri yeah, unfortunately that’s a lot of assumptions. I stick with what I know. And what I know is that increased force generated means increased power. And that means increased friction. Less power is less friction. So the watts saved over whatever you’re comparing the ceramic BB to is assuming a particular power. For less power input, you’re saving less power. More power input means you’re saving more power. The only question is, what does the curve of that power savings look like as you increase in power output? Is it a linear increase or is there a curve to it? I don’t think anyone has the data on that. Also, the “watt savings” is derived from an assumption of what a rider is using before the switch to this hybrid ceramic BB.

@@RB-xv4si you are free to collect your own data and make your own decisions.

The only wallpaper I rock

Dura ace or SRAM red.

The the cheapest. They will be good enough. Even the worst industrial bearings will be good enough for something as simplistic as a bike.

Check this out: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-jfiLd-WBJwE.html

Neither . Ceramic bearings are useless on bicycles. Ceramic bearings are too brittle . They are great for high speed high temperatures (speeds of 10,000 rpm or more) . Non contact seal steel bearings are a much better idea .

I am not familiar with that brand, but I think it is safe to say the performance would be on par with most ceramic BB presented in this video.