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  1. #1
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    New question here. Light weight 5 bolt cranks?

    Hi,

    Besides Profile Racing are there any other options for 5 bolt 110/74 BCD cranks?

    Thanks,
    Michael Holberton
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  2. #2
    Hmmmmm
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    Why do you want 5 bolt cranks?
    4 bolt cranks have been more than strong enough for years...
    "I thought of that while riding my bike."
    Albert Einstein, on the theory of relativity.

    Peace and Long Rides...

  3. #3
    All 26.5" all the time!
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    Surly Mr.Whirly

  4. #4
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    New question here.

    I need Square Taper.

  5. #5
    All 26.5" all the time!
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    Compact road cranks with one of these middle rings --






    http://www.interlocracing.com/triplizer.html

  6. #6
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    New question here.

    Ok folks here's some more info to help save the bandwidth.

    The Race Face chain rings I have on are pretty new and a long way from needing replacement and the BB I have is functioning perfectly and doesn't need replacing either. I am also aware of the Sugino XD300 crankset if Profile Racing doesn't come to the party and replace the right arm which is cracked where it interfaces with the BB.

    Does anyone have any feed back regarding the Vuelta USA cranks?

  7. #7
    Mantis, Paramount, Campy
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    ~Infinate Chainring Choices

    Quote Originally Posted by Ericmopar
    Why do you want 5 bolt cranks?
    4 bolt cranks have been more than strong enough for years...
    I mean, really, the only reason for 4 bolt cranks in the first place for Shimano to stick it to the consumer and all the aftermarket companties.
    *** --- *** --- ***

  8. #8
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    Caution;  Merge;  Workers Ahead!

    Some more information for those interested in helping me solve this riddle.

    The BB is a Shimano UN type - BC 1.37 x 24 and Spindle Length is 107mm. BB width is 68mm.

    My bike is an AMP B4.

  9. #9
    Hmmmmm
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    Quote Originally Posted by Shayne
    I mean, really, the only reason for 4 bolt cranks in the first place for Shimano to stick it to the consumer and all the aftermarket companties.
    Every, major, mountain bike crank manufacturer, has standardized at 104mm / 64mm, 4 arm, with outside BB bearings.
    I got curious and searched for quite awhile. Almost everything was 104 / 64.
    I couldn't find anything that was square taper, except Sugino and a couple of really crappy cranksets.
    Even the old square taper Deore cranks are gone. I couldn't even find some low end Truvative square taper, much less 5 arm.

    Amp B-4s are classic bikes, so I don't blame the OP for wanting to keep a retro look.

    Eric.
    "I thought of that while riding my bike."
    Albert Einstein, on the theory of relativity.

    Peace and Long Rides...

  10. #10
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    Caution;  Merge;  Workers Ahead!

    There is the Carmina from Specialites Ta in France.
    http://www.specialites-ta.com/produits/ped_car_gb.htm#

    It also appears that Middleburn have a Spider for their RS8 to suit 110/74 rings for which I'm awaiting confirmation but it's no where near as light as my old Profile Racing cranks which are 400 grams for 175mm length including the spider but without bolts or rings.

  11. #11
    Hmmmmm
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    Quote Originally Posted by mtbvfr
    There is the Carmina from Specialites Ta in France.
    http://www.specialites-ta.com/produits/ped_car_gb.htm#

    It also appears that Middleburn have a Spider for their RS8 to suit 110/74 rings for which I'm awaiting confirmation but it's no where near as light as my old Profile Racing cranks which are 400 grams for 175mm length including the spider but without bolts or rings.
    Something to keep in mind, is that the new weights for cranksets, include everything, including the BB.
    I don't blame you for wanting to keep the old cranks, but the new ones from Shimano, Raceface, etc really are light years ahead of cranks from just a few years ago.
    The outside BBs are a huge improvement in reliability over the old UN and ISIS internal bearings.

    This was one of the better selections of cranks I found.

    http://www.adrenalinebikes.com/store...29%20Cranksets
    "I thought of that while riding my bike."
    Albert Einstein, on the theory of relativity.

    Peace and Long Rides...

  12. #12
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    Caution;  Merge;  Workers Ahead!

    Thanks to all for the feedback so far.

    Another thing to consider is the Q-factor. The Profile Racing cranks were Low Profile and even then my heels would sometimes rub on them.

    So, if a set of Crankarms using Outboard bearings were to be the final solution which would provide the lowest Q-factors?

    Otherwise it looks like maybe the Sugino or TA Carmina with a lightweight BB such as American Classic or Phil Wood could be the best option.

  13. #13
    Hmmmmm
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    Quote Originally Posted by mtbvfr
    Thanks to all for the feedback so far.

    Another thing to consider is the Q-factor. The Profile Racing cranks were Low Profile and even then my heels would sometimes rub on them.

    So, if a set of Crankarms using Outboard bearings were to be the final solution which would provide the lowest Q-factors?

    Otherwise it looks like maybe the Sugino or TA Carmina with a lightweight BB such as American Classic or Phil Wood could be the best option.

    Hmmmm...I don't know who has the lowest "Q" factor.
    I'm a big guy at 6' 1" and look for wider cranks.
    I do have a heel rubbing problem though, because I ride with my toes pointed outward and I haven't had any issues with my LX Hollowtech II cranks. The XTs are nice as well.
    I haven't rode them, but a lot of riders around Bootleg love Race Face as well.
    Around here, we have started to think of Truvative as an OEM brand, with hit or miss quality issues. Truvative's, freeriding and DH cranks are overly heavy, but they are strong though.
    "I thought of that while riding my bike."
    Albert Einstein, on the theory of relativity.

    Peace and Long Rides...

  14. #14
    Expert Crasher
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    Quote Originally Posted by mtbvfr
    Hi,

    Besides Profile Racing are there any other options for 5 bolt 110/74 BCD cranks?
    See if you can find some Race Face Turbines - these are 110/74, running Blackspire Super Pro rings - awesome setup. Light enough, strong too. To run an inner ring, you'll need to buy some 8.3mm spacers too - but those are easy to source.

    Happiness depends more on the inward disposition of mind than on outward circumstances. Benjamin Franklin

  15. #15
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    MIDDLEBURN CRANKS. You will have all the options that you want to choose from, not one option given to you by a company like Shimano.
    ... And I Am You,
    And What I See Is Me!

  16. #16
    TLL
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    Quote Originally Posted by Wildeyes
    MIDDLEBURN CRANKS. You will have all the options that you want to choose from, not one option given to you by a company like Shimano.
    Zactly. Available in both square taper and ISIS.
    Hadley rear hub service here and here.

  17. #17
    over researcher
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    Quote Originally Posted by Ericmopar
    I don't blame you for wanting to keep the old cranks, but the new ones from Shimano, Raceface, etc really are light years ahead of cranks from just a few years ago.
    The outside BBs are a huge improvement in reliability over the old UN and ISIS internal bearings.
    What's the huge improvement over the bearings of a Shimano UN-xx square taper bottom bracket?

    *crickets chirping*



    Sure, the new x-type is light years ahead of ISIS, only because ISIS had smaller bearings, but ISIS was a solution looking for a problem. Square taper with good quality bearings simply do not have problems. You certainly wouldn't have a sticky at the top of a forum telling all the johnny come lately's how to fix their creaky, gritty square taper BB's. I'm tempted to pull the plug and finally upgrade to x-type, but I keep finding reasons to enjoy the reliability of the good old square taper.

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