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Message: Plain rotors are fine, too.
Changed By: Trygve (San Francisco, CA)
Change Date: May 07, 2019 08:39PM
Plain rotors are fine, too.
Change Date: May 07, 2019 08:39PM
Plain rotors are fine, too.
Nothing wrong with any of the rotors, really. Drilled are just most prone to early replacement (i.e. before they are "worn down" to minimum thickness) due to cracks emanating from the holes. The other types of rotor can still develop tiny "crackles" that lead to cracks, but it takes longer for the cracks to become worrisome. Among the SPB racers, I don't hear people discussing performance differences between $ and $$$$ rotors. People tend to get cheaper ones. (Slotted version for those who prefer it.)
Here is a nasty crack (on a slotted rotor, unrelated to the slotting) that was concerning to discover! When you see this, you think, "How did I not find that before? Or did it suddenly happen? Relieved that I found it before it got worse!" The smaller crackles all over the surface are normal but at this state probably signal the disc could be replaced. (even without the crack appearing). You can see from the slot channel still being there that there is plenty of material remaining (slots are not much deeper than the wear limit depth).
[img]http://oi66.tinypic.com/2urbj9v.jpg[/img]
Here is a nasty crack (on a slotted rotor, unrelated to the slotting) that was concerning to discover! When you see this, you think, "How did I not find that before? Or did it suddenly happen? Relieved that I found it before it got worse!" The smaller crackles all over the surface are normal but at this state probably signal the disc could be replaced. (even without the crack appearing). You can see from the slot channel still being there that there is plenty of material remaining (slots are not much deeper than the wear limit depth).
[img]http://oi66.tinypic.com/2urbj9v.jpg[/img]
Original Message
Author: Trygve (San Francisco, CA)Date: May 07, 2019 08:35PM
Plain rotors are fine, too.
Nothing wrong with any of the rotors, really. Drilled are just most prone to early replacement (i.e. before they are "worn down" to minimum thickness) due to cracks emanating from the holes. The other types of rotor can still develop tiny "crackles" that lead to cracks, but it takes longer for the cracks to become worrisome. Among the SPB racers, I don't hear people discussing performance differences between $ and $$$$ rotors. People tend to get cheaper ones. (Slotted version for those who prefer it.)
Here is a nasty crack (on a slotted rotor, unrelated to the slotting) that was concerning to discover! When you see this, you think, "How did I not find that before? Or did it suddenly happen? Relieved that I found it before it got worse!" The smaller crackles all over the surface are normal but at this state probably signal the disc could be replaced. You can see from the slot channel still being there that there is plenty of material remaining (slots are not much deeper than the wear limit depth).
[img]http://oi66.tinypic.com/2urbj9v.jpg[/img]
Here is a nasty crack (on a slotted rotor, unrelated to the slotting) that was concerning to discover! When you see this, you think, "How did I not find that before? Or did it suddenly happen? Relieved that I found it before it got worse!" The smaller crackles all over the surface are normal but at this state probably signal the disc could be replaced. You can see from the slot channel still being there that there is plenty of material remaining (slots are not much deeper than the wear limit depth).
[img]http://oi66.tinypic.com/2urbj9v.jpg[/img]