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  1. #1
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    Schwinn Sports Tourer Bottom Bracket

    Have a '72 Sports Tourer. Unsure of the correct size for the bottom bracket on this bike. Recommendations for a direct replacement? May even go single speed with this frame.

    Thanks for any help you can provide.

    furyus

  2. #2
    Rustbelt Rider mkeller234's Avatar
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    What crank? I think that has more to do with the spindle length. My nervar double takes a 117 spindle. I think the sports tourer came with a triple though?
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  3. #3
    Decrepit Member Scooper's Avatar
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    The '72 Sports Tourer had a TA double chainring crank with 54-40T. The spindle length is 4 1/2" long (114mm).

    - Stan

  4. #4
    Chrome Freak Rabid Koala's Avatar
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    The 72 Sports Tourer I briefly had used a Nervar crank and BB, a double.
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  5. #5
    Decrepit Member Scooper's Avatar
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    Quote Originally Posted by Rabid Koala View Post
    The 72 Sports Tourer I briefly had used a Nervar crank and BB, a double.
    Interesting. I wonder if they used both T-A and Nervar that year. Here's the Nervar crank P-A catalog page. It was also a 54-40T double. I think I see 117 on the spindle, so mkeller234 is probably correct.

    Last edited by Scooper; 02-04-12 at 03:23 PM.
    - Stan

  6. #6
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    Great help so far, guys. Any idea of a direct replacement? Mine does have the Nervar bits.

    Many thanks!

    furyus

  7. #7
    Rustbelt Rider mkeller234's Avatar
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    Nervar cranks take an ISO taper, so that does make it slightly tougher. I know think Campy and Stronglight spindles work. Miche Primato cartridges are ISO taper and reasonably but the longest I can find is 115. Maybe it would work with a spacer?
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