Originally Posted by
Doge
It was, but the principle is the same. One has a higher modulus than the other.
You only would see that under load.
My point was only load testing matters for this. Seals, grease, grit, roundness are all factors, but do not answer "why ceramic".
Actual load testing shows that there is no difference between ceramic and steel. Its simply not ceramic or not ceramic that accounts for the differences in BB friction. Its all the other factors. Of those other factors lubricants and seals are the most significant, as long as proper installation is assumed.