Quickie about BB's, cranks and italian threading
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  1. #1
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    Quickie about BB's, cranks and italian threading

    Hi everyone! I'm new to these forums, first time poster along with my first road bike, coincidentally enough, which is an used vintage but fine working Benotto 1600/1800 to get myself going in the world of road biking (long time mountain biker here).

    So far, I've learned about rear and front wheel spacing on road bikes, as well as wheel sizes, tire sizes, etc...but I'm a bit lost on the bottom brackets. I want to upgrade the cranks and chainrings and I'm figuring out what am I going to need.
    I've gone over everything and I feel like I'm missing something.
    The bike has a Suntour XCR octalink crank installed, italian threaded BB I assume (no idea why that crank is in there).
    The shell is 70mm, that means italian threaded.
    There are modern italian threaded BB's, as well as modern cranks that go in them.
    I've found countless good deals locally on modern cranks with way better gear combinations that I'd love to have instead of what I got now. Right now I'm looking at a spotless Tiagra crankset and a little bit scratched Ultegra crankset for a great price. But they are hollowtech II models.

    My question is: can I just slap a modern italian threaded external BB on the bike (say, a BB-RS500) and use a modern crank accordingly, or is it there something I'm not considering yet? Other than the FD, cassette, etc.


    Thanks in advance. Slowly getting bitten by the bug of mindlessly browsing for parts just as I did on the mtb side.

  2. #2
    'brifter' is f'ing stupid
    Reputation: cxwrench's Avatar
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    Yes, slap away.
    #promechaniclife

  3. #3
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    Quote Originally Posted by deartist7 View Post
    ................... italian threaded BB I assume (no idea why that crank is in there).
    The shell is 70mm, that means italian threaded.
    ...................
    Pardon my asking: What exactly is Italian threaded???
    Cheers

    HJ
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    Hans-Joerg Mueller
    Coldstream, BC Canada

  4. #4
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    Quote Originally Posted by RhB_HJ View Post
    Pardon my asking: What exactly is Italian threaded???
    Here's a good explanation:

    https://www.bikeradar.com/features/w...ottom-bracket/
    "COMPLACENCY IS LETHAL - VOTE in November." - System Shock.

    "With
    bicycles in particular, you need to separate between what's merely true and what's important."
    -- DCGriz, RBR.





  5. #5
    'brifter' is f'ing stupid
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    Quote Originally Posted by RhB_HJ View Post
    Pardon my asking: What exactly is Italian threaded???
    The tl:dr explanation is: The ones that are self-loosening.
    #promechaniclife

  6. #6
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    Thanks, never heard of that term.
    Cheers

    HJ
    ------------------------------
    Hans-Joerg Mueller
    Coldstream, BC Canada

  7. #7
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    Quote Originally Posted by cxwrench View Post
    The tl:dr explanation is: The ones that are self-loosening.
    LOL! Yep, no inverse threading in Italian BB's.
    "COMPLACENCY IS LETHAL - VOTE in November." - System Shock.

    "With
    bicycles in particular, you need to separate between what's merely true and what's important."
    -- DCGriz, RBR.





  8. #8
    xxl
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    Quote Originally Posted by cxwrench View Post
    The tl:dr explanation is: The ones that are self-loosening.

    Yeah, but only on one side.
    More Americans wanted Hillary Clinton to be President than wanted Donald Trump.

    Donald Trump has never had a wife he didn't cheat on.

    There are 2.6 million covid cases in the United States (as of June 30), five months after Donald Trump said it was "totally under control," and that "it's gonna be just fine."

  9. #9
    'brifter' is f'ing stupid
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    Quote Originally Posted by xxl View Post
    Yeah, but only on one side.
    Very true!
    #promechaniclife

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