robgray wrote:
devashish_paul wrote:
Hey Rob, no one has been able to answer one of my questions above. If the Dimond beam "sinks" do you just end up with a lower seat position in a "bottomed out" fail safe mode or do you have the chance of the rear beam hitting the rear wheel moving at 80 kph. Since I have ridden down Palomar with you at 80 kph, I am guessing its just a 'sinking' beam thing. If that is the case, I don't see how this makes this bike unsafe, you might just go slower in your training ride or race. I can see how that affects you as a pro triathlete.
Hey Dev - there is a big bolt holding the beam up front - so it cannot really sink unless the carbon breaks (either where the bolt is, or the beam itself). The design is such that the bolt and the "lower frame" support all the weight. The issue with the seat dropping happens when the seat clamp doesn't hold the seatpost, so the seatpost drops and bottoms out against the end of the beam. For most riders, that means that their seat drops a few mm, which although inconvenient, is not unsafe. They resolved those seat clamp issues quite a long time ago.
I have no skin in this fight other than I like both of the men in this dispute. I just needed clarity on the "failure mode" because I personally could not see how this would be UNSAFE to ride and this entire thread might end up being a spread of misinformation towards the uninformed that overly penalizes the company's design and manufacturing.