what is ceramic bearings?
There is no such thing as gravity bleed. You either pressure bleed, with high or low pressure, and there is vacuum bleed. You start by filling the reservoir, making sure the back brakes are adjusted, and then bleed the furthest wheel first. Whether you use low pressure or high pressure, depends on whether or not the lines are empty. But I will assume you have not removed any brake component, so the lines are not empty and you can use a high pressure bleed. Then what you do is have someone pump up the pedal and hold it down. You open the bleeder until the main pressure squirts out, but close it before it is all gone. Repeat until no bubbles or dirt. Check fluid. Move on to next wheel.
you pop the master cylinder brake lid off then crack the bleeder screw on the farthest wheel away and let it bleed. After its running clear tighten it up then crack the next one loose then do the fronts closer to the wheels. i hope i didn't confuse you. haha hope it helps
Hey Mandy, nice cut and paste from the Boca website!
Ceramic is the new Holy Grail! Its lighter, smoother, stiffer, harder, corrosion resistant, and electrically resistant. These fundamental characteristics allow for a wide range of performance enhancements in bearings. Ceramic bearings dissipate heat quickly, reducing friction and wear while maintaining a precision smooth surface. Today's leading edge ceramics are made with Silicon Nitride (Si3N4) and have characteristics similar to the heat absorbing, highly resilient tiles on the Space Shuttle.
A ceramic bearing is new to the cycling world, the ceramic is a replacement for steel or stainless steel components used in the construction of the bearing. What ceramics offer is lower friction and longer life under certain conditions. One of the big advantages of ceramics is in what goes on in a bearing under load. Steel constructed bearings actually create weld spots during use, due to the high temp. characteristics and a much smoother bearing surface ceramics don't have this problem. Over the years hybrid bearings have been created to stop the welding problem, steel/stainless, ceramic/chrome and other hybrid bearings due to their construction help eliminate the welding problem. Ceramic bearings are very pricey and for 99.999% of use the cost is not worth it, a hybrid bearing costs less and has similar friction characteristics. A side note if you do not use extreme care when installing ceramic bearings they will fail rather fast.
