My BB30 bearings abruptly gave up the ghost yesterday so I stopped by IFIXBYX for some TLC. Of course, trips to Mark's place are quickly derailed by all the eye candy in there. Here's some quick and dirty iPhone shots of today's visit.
There's been some speculation that the tightness of tubeless tire beads can actually lower the spoke tension in your wheels. Mine were 30kg too low so I took the opportunity to cinch them up a touch. This cool little tool from DT Swiss is new to me and oh so sweet. It holds the bladed spoke still way down by the nipple (instead of above the spoke wrench) so that it doesn't wind up at all when you turn the spoke wrench. (Holy crap it's $27-$36!)
When Mark initially installed my BB a reamer wasn't available, so he's taking the opportunity to do it now. This is a headtube facing/reaming tool with a BB30 reamer.
A BB reaming action shot!
The shell, all cleaned up. Hardly any material was removed, but it was enough to make a palpable difference when pressing in the bearings.
Here's the old bearings. Nope, I wasn't imaging that grinding sensation. I got almost two years out of these guys, even with the inner seals removed.
Mark's got the new SRAM Red on his bike and he loves it. In his opinion it's the best cabled system out there now.
Mark loves the feel of the brakes. They also open nice and wide for all the new wide rims coming out.
The front derailleur that needs no trimming and never rubs. Mark tried to explain how the geometry of the linkage makes this happen but I just couldn't understand it for the life of me.
There's the subtle change in the cage's angle as it shifts. That's how it manages to avoid chain rub in all gears.
This ingenious chain catcher could be the death knell for K-Edge and other chain catchers. Here's why: when you install the K-Edge you have to lock in the front derailleur's and the chain catcher's height and angle, all by tightening one bolt. It's almost impossible to nail all four in one go. The SRAM front derailleur's mounting bolt is hollow and threaded, so you first install the front derailleur, then mount the chain catcher onto that bolt. Furthermore, the chain catcher has a set screw to lock in its angle so it's far more refined than the 'tighten and hope' approach you have to apply with other chain catchers.
The new cassette has silicon inserts between cogs to keep things quiet.
Instead of a pressed in back plate, the entire big cog is now one aluminum piece riveted to the body.
The cassette's more extensively machined, with gaps between cogs.