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Thread: e type

  1. #1
    Rabbit Herder
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    e type

    what the hell is an e-type BB?

    Im thinking of upgrading my drivetrain to some DeoreLX stuff over the winter, and want to change out everything from shifters all the way back, including the BB. What is the difference between an e-type BB compared to a non-e-type
    something like these two:

    BB-ES70
    BB-ES70-E

    seem to be the same part but one is E and the other is not

  2. #2
    60mph in the 42 ring! Dave Stohler's Avatar
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    English?
    Cycling Addict
    **************
    (techinical questions gladly answered via AIM)

  3. #3
    Wood Licker Maelstrom's Avatar
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    e-type is when you mount the front deraileur to the bottom bracket istead of the down tube. You use these on dual suspensions that have little or no downtube to work with.

    I am sure you know what a regular bottom bracket is

  4. #4
    Rabbit Herder
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    umm, does regular mean it goes on the bottom


    werd, thanks

  5. #5
    Forum Admin lotek's Avatar
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    Isn't that the one that was used on 60's Jaguars
    (e-type) or XKE for the yanks?

    Marty
    Sono pił lento di quel che sembra.
    Odio la gente, tutti.

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  6. #6
    Senior Member
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    can i use an e-type front der. with any bb? or does the bb have to be e-type as well?
    i won't deny it i'm a straight ridah

  7. #7
    Wood Licker Maelstrom's Avatar
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    bb has to be e-type to I believe.

  8. #8
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    An e-type bottom bracket is basically a normal bottom bracket except that the shoulder on the cup that gets threaded into the frame is thinner to compensate for the mount of the front derailleur. (the mount is what gets sandwiched between the frame and shoulder) I have used e-type front derailleur on normal bottom brackets but would prefer to use e-type to get the spacing of the chainrings and crank back to where they should be. You also need a frame that is e-type compatible. The front derailleur bolts up to the frame by the bottom bracket to keep the derail from rotating. There is a threaded boss on the frame for this. I use it on my OCLV mtb frame to protect the area from the dreaded chainsuck.

  9. #9
    Senior Member B1105's Avatar
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    you can use e types on most bottom brackets, you just have to leace some space for the derraileur.

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