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  1. #1
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    Stainless Steel frame?

    P1250079.jpgAny idea what a stainless steel bike w/ cromoly forks is worth
    Picked it up for $35 bucks thinking it was titanium later found out its stainless and pretty light weight too.
    Don't know the brand either
    Shimano Delore XT all around 700c rims
    I think its from the early 90's??

  2. #2
    Senior Member JonnyHK's Avatar
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    The boys in the C&V forum might have a better idea (and might even be able to ID it). To to the appraisals thread.

  3. #3
    Decrepit Member Scooper's Avatar
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    If it's more than six years old and really is stainless steel, it's probably Columbus Metax.
    - Stan

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    its over six yrs old and is really stainless steel...are they any good?

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    Randomhead
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    did you try a magnet on it?

  6. #6
    Decrepit Member Scooper's Avatar
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    My 953 frame has enough iron (chemical composition of 953 is ~75% Fe) in it to attract a magnet. It's definitely a weaker attraction than plain carbon steel or chromoly, though.

    - Stan

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    post a closeup of the bottom bracket so you can see the spindle and left crank arm. Does it have a retaining ring with set screws on the spindle between the bearings and the crank arm? any numbers stamped on the frame or dropouts?

  8. #8
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    yes its magnetic

  9. #9
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    posted some new pics

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    its very magnetic

  12. #12
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    For sure, is NOT a Merlin...

  13. #13
    Randomhead
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    I'm pretty sure I see peeling plating on the bb shell and elsewhere. I am going to support FTW's guess of electroless nickel

    I think the stainless steels that attract magnets are only weakly magnetic. Strongly magnetic also supports the notion that it is not stainless.

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    What do you guys think about it being a Park Pre cromoly frame with titanium plating saw one w/ the same frame geometry and stain;less steel look and blackforks w/ xt shimano components all around they made them up to 97 0r 98?

  15. #15
    THE Materials Oracle Falanx's Avatar
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    Quote Originally Posted by unterhausen View Post
    did you try a magnet on it?
    Quote Originally Posted by Scooper View Post
    My 953 frame has enough iron (chemical composition of 953 is ~75% Fe) in it to attract a magnet. It's definitely a weaker attraction than plain carbon steel or chromoly, though.

    Quote Originally Posted by landlover1 View Post
    yes its magnetic
    Quote Originally Posted by unterhausen View Post
    I'm pretty sure I see peeling plating on the bb shell and elsewhere. I am going to support FTW's guess of electroless nickel

    I think the stainless steels that attract magnets are only weakly magnetic. Strongly magnetic also supports the notion that it is not stainless.
    Hell's teeth, what is it with you guys and magnets?

    A magnet doesn't tell you squat. Nickel, cobalt,gadolinium, three quarters of their alloys, and all the steels are ferromagnetic. Some copper, chromium and vanadium alloys are paramagnetic as is liquid oxygen. They're all attracted ot a magnet.

    Lets go back to basic ferrous metallurgy. There are three phases available in iron alloys. Alpha and delta iron, or ferrite, is strongly magnetic. Alpha prime iron or martensite and its tempers, is strongly magnetic. Gamma iron, or austenite is also magnetic, despite what brochures tell you, just very, very weakly. Its Curie temperature for a particular alloy may be very, very low, and its energy product tiny, but it's there.

    The giveaway is the colour. It's electroless or electroplated nickel on steel. And the second giveaway is that it's rusting through the scratches and chips in the nickel, accelerated by the nickel's cathodic presence, rather than the discrete pitting corrosion that all chromium-rich alloys suffer.

    And a quicker way to find the composition of Reynolds 953 is to look at Carpenter's website at www.cartech.com and search for Custom 455.

    Quote Originally Posted by landlover1 View Post
    What do you guys think about it being a Park Pre cromoly frame with titanium plating saw one w/ the same frame geometry and stain;less steel look and blackforks w/ xt shimano components all around they made them up to 97 0r 98?
    Titanium is anodic to iron. It would corrode in preference. No rusting for a while.
    "While my father fought for you, I learnt. While my father glorified your petty administration, I learnt. While he longed every day for our line, Adunís line, to be restored, I learnt. He sent me away to bring the Dark Templar back when the time was right!
    "And you tell me that I cannot do this? That I cannot feel the weight of the universe?
    "Damn you, Tellan! Aldaris killed my father!"

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    Thanks alot, I actually tracking the serial number down and it seems to be a Marin 1993 has marin lite parts on it like handle bars etc
    they came in a sort of stainless chromoly, aluminum and yes titanium but I'm leaning toward the cromoly

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    The model still escapes me though

  18. #18
    THE Materials Oracle Falanx's Avatar
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    In 1993 Marin had exactly one titanium frame. They didn't make it this big, each set of dropouts were stamped with a serial number and they definitely didn't have eyelets on a Race Team frame.
    "While my father fought for you, I learnt. While my father glorified your petty administration, I learnt. While he longed every day for our line, Adunís line, to be restored, I learnt. He sent me away to bring the Dark Templar back when the time was right!
    "And you tell me that I cannot do this? That I cannot feel the weight of the universe?
    "Damn you, Tellan! Aldaris killed my father!"

  19. #19
    Senior Member bobbycorno's Avatar
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    Didn't anybody else notice the "MADE IN TAIWAN" sticker on the bb?? That's a DEAD giveaway that it's not Ti or stainless... ParkPre sounds like a likely suspect.

    SP
    Bend, OR

  20. #20
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    Quote Originally Posted by bobbycorno View Post
    Didn't anybody else notice the "MADE IN TAIWAN" sticker on the bb?? That's a DEAD giveaway that it's not Ti or stainless...
    well, this isn't C&V, so I don't know bicycle history. When did the Taiwanese start making Ti?

  21. #21
    coprolite fietsbob's Avatar
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    might just be be nickel plated , since I think i see surface rust showing up
    from dirt left on after riding in the wet mud.

    blast it and powder coat it.
    Last edited by fietsbob; 06-09-11 at 12:54 PM.

  22. #22
    Senior Member joseph senger's Avatar
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    honestly, there is no need for any magnet crap or otherwise. Stainless, when it rusts, doesn't rust like that. take some sand paper, sand an area and spray with some acid. If it's cromo it needs paint anyways, if it's stainless, no foul as it wont rust and if it does it will give you more of a stain first and you will then know.

    cool find in any case, looks like a potentially fun ride.

  23. #23
    THE Materials Oracle Falanx's Avatar
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    Quote Originally Posted by joseph senger View Post
    honestly, there is no need for any magnet crap or otherwise.
    I think we did this bit already.

    Quote Originally Posted by joseph senger View Post
    Stainless, when it rusts, doesn't rust like that. take some sand paper, sand an area and spray with some acid. If it's cromo it needs paint anyways, if it's stainless, no foul as it wont rust and if it does it will give you more of a stain first and you will then know.

    cool find in any case, looks like a potentially fun ride.

    And second, pick your acid. All stainless steels rust, there are no exceptions. And several in most available acids. Reducing acids eat low-alloy stainless steels because they destabilise the oxide film.

    And if it's titanium? In an oxidising acid it will stain, and in a reducing acid it will stain.
    "While my father fought for you, I learnt. While my father glorified your petty administration, I learnt. While he longed every day for our line, Adunís line, to be restored, I learnt. He sent me away to bring the Dark Templar back when the time was right!
    "And you tell me that I cannot do this? That I cannot feel the weight of the universe?
    "Damn you, Tellan! Aldaris killed my father!"

  24. #24
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    Found out its a Marin Bike, Marin Lite parts like handle bars, ends etc. the serial # Matches Marin except the model J is a mystery still
    It was never painted seems like the coating has rust but not the actual frame?

  25. #25
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    which acid would you suggest?

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