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  1. #1
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    Hollowtech II, do they fit an EBB

    Hi everyone, i figured it would probably be best to ask this question here, seeing as tandem riders use EBB's more than most. Is it possible to fit a Hollowtech II bottom bracket to an Eccentric bottom bracket? If not, then what type of bottom bracket would be strongest? A square taper, or an octalink, Isis? The truvativ powerspline lasted 3 months on my SS mtb. Looking for something stronger.

  2. #2
    PMK
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    Senior Member PMK's Avatar
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    Maybe I'm reading more into this than I should. But yes they should fit with no problems, and because of the EBB being a quality machined item, have the best bearing alignment for the cups.

    Seems the real question about the failure was why, did the bearings rust / corrode. Did you take the extra time to put a quality grease into the bearings before use. Many bearings are assembled quite dry for optimum performance. Unfortunately the window of performance is small and longevity suffers.

    PK
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  3. #3
    Gear Combo Guru Chris_W's Avatar
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    Please define what you mean by the "strongest" bottom bracket. If you mean the stiffest axle, then an outboard bearing design is probably best because they have the largest axles. If you mean longest-lasting bearings then an internal bearing design would be best, but stay away from ISIS or other designs that have small bearings - square taper and octalink are probably best. All of these types can fit inside an eccentric shell, because that gives you a standard 68mm wide, BSA threaded shell.

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