Nobody wrote:Yes, it appears the problem is after some point, but the earlier ones are OK. Most manufacturers have recall problems from time to time.
...the stop sell applies to both versions of the brakes with serial numbers between 36T30000000 and 42T39999999 shipped to bike assembly points and after-market distribution channels after 5 September 2013.
Yep. It's a FUBAR for sure, but it's hardly a premature death of the product line.
It's probably a dodgy O-ring or something simple like that. They swapped suppliers, had a QC failure, and can't be certain that product already shipped doesn't have the same fault. When you're dealing with brakes, any potential failure is safety critical, and you have to jump on it. Expensive, but so is a class action defense if things start failing in the field.
I work with car brakes. Sometimes it's necessary to pause for thought, and re-phrase an engineering judgement by adding the words "your honour" at the end to imagine how your reasoning would stand up under investigation if something did go wrong. You never want a recall, but if you've gotta, you've gotta.
tim