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  1. #1
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    What is this Columbus frame? need help.

    Hi.

    I found this on the roadside rubbish collection yesterday. has a mix of Shimano Sante and 600.

    Frame is very light for its size. columbus drop-outs (forks & frame)

    Serial number on the B/B is M205
    Paint is a very dark blue with a gold mist over the top, done properly not with a spray can.

    I know it isn't anything super exotic, as the lugs are quite basic, but it is well constructed & has an internal brake cable.


    Seatpost diameter is approx 27mm (seatpost is stuck, so I will need to remove it somehow)
    Once I find my damned headset spanner I will drop the fork out to see if there is any markings on the fork steerer.











  2. #2
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  3. #3
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  4. #4
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    First step is to check the bottom bracket cups for markings to detrermine the thread standard. Second, check inside the bottom of the fork's steerer tube for five helical ridges. If there's nothing, then you can remove the fork to check the outside of the steerer.

  5. #5
    Gammal cyklist Reynolds's Avatar
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    Looks like a nice frame! Wish I could find stuff like that on the "roadside rubbish"...

  6. #6
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    Quote Originally Posted by T-Mar View Post
    check inside the bottom of the fork's steerer tube for five helical ridges. If there's nothing, then you can remove the fork to check the outside of the steerer.

    Ahh. completely forgot about that.
    Yes, it has 5 ridges - flutes.



    hmmm. no markings on the steerer. Just the serial number M205




    My Rossin has the same ridges on its forks.

  7. #7
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    Quote Originally Posted by Reynolds View Post
    Looks like a nice frame! Wish I could find stuff like that on the "roadside rubbish"...
    they don't come easy haha.

    when they do the roadside collections I am normally driving the streets all night till around 5am.

    I found a rare Tange/Rhino BMX bike a few weeks back in MINT condition, all japanese made components
    (except the wheels).

    all I did was put new tyres on it.

  8. #8
    Buh'wah?! Amani576's Avatar
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    I have nothing more to add to this thread other than saying that the OP's S/N is hilarious.
    -Gene-

  9. #9
    sultan of schwinn EjustE's Avatar
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    I would not dismiss this bike that quickly

    the presence of Sante components gives you an approximate age: 1989-1991ish. The facts that it is a Columbus frame, it does not have a rubber cable guide underneath the BB and has that internal top tube break line arrangement, points to an italian make. Based on the size (it's a big bike), I'd say that it is Columbus SP steel. If you take good C-C, C-T and T-T measurements, I could probably nail the maker. I suspect that the bar and stem are Italian in origin as well. That was past the era of pantographed everything, so you might have something really good here...

  10. #10
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    ah, cool.

    I have pretty dodgey eyes for a young fella (21) I can't find my glasses

    58 seat tube
    56 top tube. centre to centre

    It has 3ttt bar and stem

  11. #11
    sultan of schwinn EjustE's Avatar
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    Quote Originally Posted by Gorilla Biscuit View Post
    ah, cool.

    I have pretty dodgey eyes for a young fella (21) I can't find my glasses

    58 seat tube
    56 top tube. centre to centre

    It has 3ttt bar and stem
    Yup, seems like you got yourself an italian racing (not touring, based on the tube size) Columbus SP bike. And the Sante components would be a perfect fit for that era 1990 (+/-1).

    That top tube brake line should be a dead giveaway if someone knows that era of italian bikes very well.

  12. #12
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    Cool. thanks for the info.


    I wonder what brand it is? or if it was possibly built by a local builder in australia with italian steel?


    Do you have any ideas what it could possibly be?

  13. #13
    sultan of schwinn EjustE's Avatar
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    Quote Originally Posted by Gorilla Biscuit View Post
    Cool. thanks for the info.


    I wonder what brand it is? or if it was possibly built by a local builder in australia with italian steel?


    Do you have any ideas what it could possibly be?
    I am not that sure what it could be... But I am fairly sure of what it is not (and that is most of the 'major' Italian manufacturers who branded their bikes on several places in 1990 or even today.) If the bike is in AUS it could potentially be a home-made job. (and a great one, that top tube break line detail and the add-ons to protect the tube is really nice - and unique- I hope that someone who knows that later era of Italian steel better than me - I'm kinda stuck in the Campy component Italian steel bikes - will chime on; and someone will probably will... give it a couple of days ) This might be a heresy (not hearsay) but, if you got your measurements correct, this kind of screams Gios to me (they were the most aggressive frames out there and they really sold their bikes as frames pretty much). But... I suspect that Gios would not let a frame leave their place without slotted BB housings, at least up to a few years before that bike was put together...

  14. #14
    sultan of schwinn EjustE's Avatar
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    and, btw, here is a shot of a (mangled) Gios of about your era showing a similar top tube brake line work (that one has crapy 90s Campy components and painted an ungodly red):


  15. #15
    Put some lights on! dougb's Avatar
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    I once saw a Basso Gap with a similar top tube............
    *1983 Raleigh International MKII*1992 Trek 930 Singletrack*1986 Raleigh Super Course*198? Giordana Scorpius*

  16. #16
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    I asked two of the old local frame builders who I suspected it was & they said no.


    so, back to the search

  17. #17
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    anyone else with ideas?

  18. #18
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    aaaaaaaaaaaaanyone?

    I have asked more of the aussie frame builders and it isn't theirs.

    So it must be made in italy?
    I wonder if i should go & ask the the person whos house I found it at?.

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