iamtak wrote:wait, wait.. I didnt catch onto the bb30 trickery, what did you do?
Are you a junior? That small cog on the cassette looks large to me. 14t?
Sweet paint job, I checked out the photo before I read any more. I had to ask myself "when did BMC release the Hincapie paintjob?" Seriously good looking work!
Wow..you guys are good.
No, I'm no junior...bought that cassette for my kid but had to change the Fulcrum freehub to Shimano from Campy and slapped it on there to make sure things worked right. I run RED for now and have the Powerdome with grown up gears (although in my case it probably doesn't make a difference) on a set of Zipp 60's.
BB30 is Starnut's creation. Basically BB30 refers to diameter of the bb spindle so where you stick the bearings really doesn't matter other than chainline (which is functional not optimal) and Q factor (which matters a little b/c of heel clearence) for me and my duckfeet a wider Q factor actually helps me a little. In a nutshell you need a 122mm BB30 spindle and some Zipp Vumaquad or Fifteen G cups. You have to move out the bearing contact surface point on the spindle so it fits right. Other than that some spacer magic and it works just fine on any bike. I'm all for someone to finally come up with a real conversion kit for BB30 to conventional. I kind of like the Specialized idea better and maybe just have different sized spacers to space out as needed for their BB30 crank. I read somewhere that the Specialized BB30 and outboard cups are the exact right spacing anyway...don't know haven't tried. The cranks were painted and carbon wrap material. SRM has to have chainrings moved inboard to the spider to get the spacing right...doesn't matter on the readings and it works fine...no problems. I could actually move the crank in more and get the spacing exact but I'd have to machine the BB cup b/c it does rub on the spider if you get too close. Not worth the trouble.
Anyway, it'll work for now. When BMC goes BB30 and Metrigear gets something out I won't need any of this and it'll be on ebay! I'm not holding my breath though.
*** I know of the Fifteen G cups...thought about using them and will on the TT bike (yes, I'm sticking another BB30 setup on that one, too)...looking at the cups on their webpage they may actually be a "BETTER" setup than the Vuma Quads b/c they have a recessed lip over the outboard side of the bearing. It may be just enough to allow it to clear the lip of the spider and move the whole chainline in closer. I have no idea but I'm sure it's no worse than using Vuma Quads (heck of a lot cheaper too). Anyway...just some FYI.
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