Middleburn crank infatuation- Mtbr.com
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  1. #1
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    Middleburn crank infatuation

    Middleburn cranks have been showing up on just about every new SS bike over that last year or so.

    I just don't get why people love them so much.

    The only reason I see to buy them is that they tend to be 100g lighter than most outboard bearing type setups. But that is only when you use the UNO one piece chainring/ chainwheel. If you use a standard spider chainring combo the weight savings is pretty much nill. I am also willing to bet that the claimed weight does not include the spider lockring since the site states arms only.

    But the cons vastly out weigh the pros:

    Inferior spindle interface, especially with ISIS
    Inferior bearing size
    limited arm length in lightest weight model.


    So tell my why I would want to buy a flexy set of cranks that don't come in 180mm unless I buy the heavier version and also have to deal with ISIS and all of it's headaches.
    Quote Originally Posted by OneBadWagon
    Since about half of the posts on here are about intangibles or hypotheticals, let's hear it!

  2. #2
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    Quote Originally Posted by magnetosphere
    Middleburn cranks have been showing up on just about every new SS bike over that last year or so.

    I just don't get why people love them so much.
    So tell my why I would want to buy a flexy set of cranks that don't come in 180mm unless I buy the heavier version and also have to deal with ISIS and all of it's headaches.

    You obviously don't want to buy them - so don't . Fortunately, crank choice is one of life's remaining freedoms.

  3. #3
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    I have 180mm RS7 middleburns with square taper BB. As to your cons:

    - Square taper is not an inferior spindle interface IMO (I've had zero problems in many years of hard use)
    - Inferior bearing size? Good square taper BBs can go forever (almost)
    - The slightly heavier RS7s come in 180mm - Just ride them and stop obsessing about a little weight I would say.

    Then again Andy R is right - you dont have to buy them. Plenty of choice out there.

  4. #4
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    I'd just like to add that I have RS7's and UNO chainring on a square taper SKF bottom bracket.
    I don't see what there's not to like about this set-up - it just does what it's supposed to do and (so far) looks like keeping on doing it.
    You can get Middleburn cranks for outboard bearing systems now, BTW.

  5. #5
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    Sorry, magnetosphere, but just about all your statements about the cons were a load of coswallop without any substantiating evidence.

    BTW my ISIS Middleburn with BB is lighter than my square taper one with BB
    As little bike as possible, as silent as possible.
    Latitude: 5736' Highlands, Scotland

  6. #6
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    yum!


  7. #7
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    they're lighter than Caramba Double Barrel's
    Quote Originally Posted by thefuzzbl
    aluminium has a tendency to fail when you need it most. i.e. you end up with a bad day.

  8. #8
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    Neither the RS7 or RS8 are what most people would describe as "flexy".

    An SKF ISIS BB does not have substandard bearings or interface (it's ISIS as it should have been done at the outset).

    And given the number of folks in track planet putting huge loads through square taper, I'd suggest that that's not an inferior interface either, it's just that most people can't build/maintain their bike properly.

    They look stunning.

    Don't like em, don't buy em.

    There are lighter headsets that run just as smoothly than Chris Kings too. Deal with it.
    Last edited by Fullrange Drew; 03-30-2010 at 02:03 AM.

  9. #9
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    Quote Originally Posted by Fullrange Drew
    Neither the RS7 or RS8 are what most people would describe as "flexy"...
    I agree with that. I have twisted some very expensive cranks in the past. My Middleburns are trouble free.
    As little bike as possible, as silent as possible.
    Latitude: 5736' Highlands, Scotland

  10. #10
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    * They now make an outboard bearing version, Shimano/Hope compatible (not on their website yet)
    * They aren't really flexy

    Oh and they look cool....

  11. #11
    Single Speed Nation
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    I can't tell if that chainring is actually ano-pink, or if you just spray painted it?!?!

  12. #12
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    They're supposed to be the strongest to weight ratio crank available. I dont know i read it somewear.

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