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  1. #1
    Can'tre Member 3alarmer's Avatar
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    1978 Campagnolo New Record Crank Spindle Replacement

    Sorry to have two simultaneous threads going with
    requests for mechanical information, but I think this
    will be the last for a while.

    I have recently purchased a 1978 or so Davidson
    Signature frame built up with mostly Campagnolo
    parts from that year. The guy who had it (ordered
    it custom fit from Davidson's in Seattle) took reasonably
    good care of it, but somehow managed over the years
    to score the crank axle deeply enough that I don't
    think i can just polish it out and proceed with the
    same axle, which is one of those strange (to me)
    Campy 68-SS-120 +1--+1.5 designations, which
    I think refers to additional reach on the axle tapers?

    To cut to the chase, this is such a fine frameset
    (are you out there listening somewhere Davidson?),
    that I have violated a longstanding rule of fix it
    on the cheap and popped for a Phil Wood BB
    replacement.

    The woman I spoke to on the phone there
    (who sounded very confident, competent, and
    doubtless knows more about BB's than I could ever
    hope to) assured me that my '78 crank is a JIS
    taper and I ordered accordingly. I know I've got
    the right cups, reach, and a good chainline on trial
    installation. I'm just looking for a couple more
    informed opinions as to whether I've got the correct
    taper. I'd like to not trash the crank if possible
    and once I've got the thing installed with threadseal
    would prefer not to have to remove it.

    I am ashamed to admit that I do not know how a
    person measures crank taper accurately enough
    to distinguish between the various incarnations that
    have come up over the years.

    Any advice?

    Mike Larmer
    Attached Images Attached Images
    Quote Originally Posted by Al Dvorin
    Ladies and gentlemen, Elvis has left the building. Thank you and goodnight

  2. #2
    Senior Member cyclist2000's Avatar
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    Sheldon Brown had a bit to say about JIS and ISO

    http://www.sheldonbrown.com/bbtaper.html

    See what you think.
    I don't do vintage, I bought them new, rode them, kept them. Now they are just old bikes
    http://www.flickr.com/photos/bustercrb/sets/72157623483647522/

  3. #3
    Senior Member Homebrew01's Avatar
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    I thought it would be ISO. You could call Phil Wood back and ask a different person.
    Bikes: Old steel race bikes, old Cannondale race bikes, less old Cannondale race bike, crappy old mtn bike

  4. #4
    Senior Member Grand Bois's Avatar
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    Quote Originally Posted by Homebrew01 View Post
    I thought it would be ISO. You could call Phil Wood back and ask a different person.
    He'll get the same answer.

  5. #5
    Senior Member ColonelJLloyd's Avatar
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    Is the spindle in the top of the photos the spindle you removed and are looking to replace? That looks like an ISO spindle to me.

    The bottom pictured spindle looks to have JIS taper. Is this the BB you just order from Phil Wood?

    Wherein lies your confusion?

  6. #6
    Old fart JohnDThompson's Avatar
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    ISO and JIS actually use the same taper; JIS is just a little longer so the arm sits a bit further out than it would on an ISO spindle. The rings Phil uses to hold the cartridge in place allow you to alter the chainline to accommodate for such differences. You may need to thread the drive side ring in a thread or so deeper to move the arm closer to the frame if you do run into a chainline problem.

  7. #7
    Can'tre Member 3alarmer's Avatar
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    Thanks to all for the incredibly pertinent
    information. I'm pretty sure I got it now.

    Mike
    Quote Originally Posted by Al Dvorin
    Ladies and gentlemen, Elvis has left the building. Thank you and goodnight

  8. #8
    Senior Member Grand Bois's Avatar
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    I got the same answer from Phil Wood. Whatever they want to call it, ISO or JIS, I'm sure what they sell you will work. It's a common situation. I'll bet they sold hundreds.

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