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Which BB30 adapter for ultegra 6700 crankset?

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Which BB30 adapter for ultegra 6700 crankset?

Old 06-10-13, 09:26 AM
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CenturionIM
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Which BB30 adapter for ultegra 6700 crankset?

I got a BB30 tarmac frame but want to install ultegra 6700 crankset and BB on it. Which bb30 adapters have you used that works well?

Some choices I found online (New to BB30, some of these may not even work, please let me know):

FSA BB30 Adapter

Wheel Manuf. BB30 Shim

Praxis conversion BB

Thanks for the help.
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Old 06-10-13, 10:29 AM
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Either the Wheel mfg. or Praxis options will work well. Wheel Mfg. spacers retain stock BB30 bearings and is cheaper.
Praxis would be my solution of choice. Bearings are captured and more sealed. Collet mounted Praxis bracket is more rock solid and less prone to creak.

As an aside, I believe the future of BB's is a Praxis style interference BB...a very clever solution....in conjunction with PF30. Praxis collet style BB's obsolete need for insert molded BB30 alloy cups, latter being no longer necessary.

PS: I just installed an Ultegra compact on a buddies' Cervelo with threaded BB. Hard to fault that crank for the $$.
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Old 06-10-13, 06:27 PM
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i recently purchased a cannondale supersix hi-mod w/bb30 but am using my old dura-ace 7800 cranks for now, so i had the dilemma as you. i went with the praxis, it's super, a great piece of equipment and engineering.

i didn't like delrin bushings as i had read that they can fall apart/crumble/disintegrate at times. the alloy versions of the bb30 bearings seem like a much better option, that would be my second choice after the praxis.

i didn't like the fsa type adapter either as i heard that they are difficult to remove if you want to switch to a bb30 later and might affect the bearing surfaces which already prone to making noise with the interference fit of the bearing surface to the bearings and if the adapter might make it worse or more possible to have issues later on.

i figured since the frame is in the thousands of dollars range, i didn't want to take any chances with messing it up by cheaping out on the adapter that's less than a hundred.
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Old 06-10-13, 09:11 PM
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I've got the wheels mfg ones and they creak when I put power down....I don't know if I need to grease them more or what. It's pretty irritating.
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Old 06-10-13, 11:06 PM
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I have a wheels knock off (some sort of plastic) works well and lbs sold them to me for $5.00
I will replace this winter with the real deal.
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Old 06-10-13, 11:36 PM
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praxis for sure. best bang for the too expensive but worth it.
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Old 06-11-13, 08:29 AM
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I will give you another option: KCNC. I installed this on my new CAAD10 a couple months ago with an Ultegra crank, and it's been awesome. Similar design to Praxis, half the price, and the bearings feel much smoother than my Ultegra bb. No noise or any problems whatsoever so far. Highly recommended.
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Old 06-11-13, 09:12 AM
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thanks all, i was not able to find much information online. Yeah seems like there are a number of complains against the Wheel Manuf. "band-aid" delrin. I think i will go with an "integrated" solution. Hate to waste by Ultegra bb though.

KCNC BB looks intriguing. How long have you been using it? anyone else has it on their bikes?
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Old 06-11-13, 11:46 AM
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Originally Posted by CenturionIM View Post
thanks all, i was not able to find much information online. Yeah seems like there are a number of complains against the Wheel Manuf. "band-aid" delrin. I think i will go with an "integrated" solution. Hate to waste by Ultegra bb though.

KCNC BB looks intriguing. How long have you been using it? anyone else has it on their bikes?
I've run the KCNC for about 1000 miles now. When I went through this search a couple months ago, I didn't find much in the way of review for the KCNC, but it's all worked out well for me thus far.
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Old 06-11-13, 12:40 PM
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the kcnc looks ok, i don't think it was around when i did the praxis, but the kcnc doesn't do the spreading collet like the praxis does and might rely more on the side force of the face of the bearing cups to the frame to keep it tight since it has o-rings where it meets the bearing surface.
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Old 06-11-13, 02:41 PM
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Originally Posted by zzzwillzzz View Post
the kcnc looks ok, i don't think it was around when i did the praxis, but the kcnc doesn't do the spreading collet like the praxis does and might rely more on the side force of the face of the bearing cups to the frame to keep it tight since it has o-rings where it meets the bearing surface.
I bet the Kcnc BB is fine as well. Simply a different execution as you say. It relies on pure lateral force to stay in place versus the expanding collet design of the Praxis. I am sure it is quite secure but the expansive nature of the Praxis may be even more robust because of vertical pedal forces.
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