Originally Posted by
dynaryder
That's because your experiences are yours and not other people's,but you refuse to acknowledge this. You complain about how easily rotors get bent,but this hasn't been my experience at all. You've also talked about how rim wear isn't a big issue,yet other posters have stated that for them it's been a real problem. You need to understand that your experiences are not universal constants.
The fact that rotor trueness, brake squeal, installation issues, etc. comes up quite often on the Forums and at my local co-op where I have to help solve these problems as well as interactions with other riders says that my experiences with disc brakes aren't just mine. If I were the only person experiencing these problems, I could be persuaded that I'm somehow special. tjspiel is experiencing the same kinds of issues that I've experienced.
Originally Posted by
tjspiel
Power isn't really the problem. It's the squealing and sometimes the alignment/rotor trueness.
A downhill race in relatively mild temps doesn't do much to reassure me but Jrickards post did. I don't want any air getting into the system because the seals aren't flexible enough to deal with extreme cold.
What's disappointing is that I had the impression that BB7s were the Cadillac choice. Now I'm hearing that they're basically junk and that hyrdos are the real McCoy. Frankly I'm a little skeptical. If I had to guess, I'd say they're probably better, but still not a panacea.
Don't take what a few around here say about BB7s to seriously. While the BB7s are more like the Chevrolet of mechanical hub mounted disc brakes, there really isn't a "Cadillac" choice when it comes to mechanicals. More like a bunch of Fiats, Ladas and Yugos. The brands of mechanical discs that I've worked on that aren't Avid are really poor.
Hydraulics have their own quirks. Cold temperatures are always a problem with elastomer seals because the polymer stiffens with temperature. There are seals that might do well in cold temperatures but they are expensive.