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  1. #1
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    chainline w/eno & middleburn uno

    White ind states a 47.5mm chainline for their eccentric eno hub. my vicious motivator has a 68mm bb shell. middleburn cranks are allegedly designed around a 113mm spindle (square taper).

    should i expect a good chainline if i run a middleburn rs-7 w/uno chainring on a 68x113 bb on this bike with a rear wheel built around a white ind eno hub?

    thanks,
    head

  2. #2
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    From the Middleburn website:

    "Having the right BB length is crucial to having gears that work as well as intended. Middleburn cranks run a 50mm chain line. For a standard MTB setup a 113mm axle is needed for ISIS or square taper. However, there are far too many variables to always be able to predict what bottom bracket you need. BB-mount ("E-type") front derailleur and chain devices can throw a stick in the works, as can a lot of oddly designed frames. If in doubt have your local bike shop fit your cranks."

    It sounds like you're looking at 50mm with a 113mm BB. A 110mm spindle should give you a 48.5mm chainline. However, I would be very wary of going with a BB spindle shorter than 113mm on a MTB. Depending on your chainring selection and frame, you could run into clearance issues. 2.5mm off isn't that bad if you're running a 8-9 speed chain.
    Last edited by amishscum; 10-05-2010 at 01:36 PM.
    "I like skinny jeans. Sometimes I wear them to the mall to get an Orange Julius." -Chim Chim

  3. #3
    jl
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    Quote Originally Posted by amishscum
    2.5mm off isn't that bad if you're running a 8-9 speed chain.
    You can also try mounting the chain ring on the inside of the sprocket.
    Ride On!

  4. #4
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    Quote Originally Posted by jl
    You can also try mounting the chain ring on the inside of the sprocket.
    I could be wrong, but I think chainline is measured from the middle ring in its natural position (the inside sprocket). But that doesn't matter anyway, cause he wants to run the UNO chainring.
    "I like skinny jeans. Sometimes I wear them to the mall to get an Orange Julius." -Chim Chim

  5. #5
    jl
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    Quote Originally Posted by amishscum
    But that doesn't matter anyway, cause he wants to run the UNO chainring.
    DOH! That's different .
    Ride On!

  6. #6
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    I ran a duo with a 113 in my santa cruz and it gave me an exactly 50mm chainline. If you run a phil wood they are adjustable by 2mm or so. I believe that would be your best bet

    I'd like to know what you do... because I am building an uno, phil wood, and an eno eccentric hub on my Ti frame
    ~JPB

    "Loud Hubs Save Lives"

  7. #7
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    Quote Originally Posted by jpbova
    I'd like to know what you do... because I am building an uno, phil wood, and an eno eccentric hub on my Ti frame
    well... the first thing i'll do is try to figure out how my broke ass is gonna afford what i want so it may be a while before i make any purchases.

  8. #8
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    you could always just run a 113 and a eno crank. It would automatically give you a 47.5 chainline. Like I said keep me updated. I should be starting on mine next month or 2 months.
    ~JPB

    "Loud Hubs Save Lives"

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