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Old 02-04-12, 02:35 PM   #1
Furyus
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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.

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Old 02-04-12, 03:29 PM   #2
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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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Old 02-04-12, 04:10 PM   #3
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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).

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Old 02-04-12, 04:12 PM   #4
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The 72 Sports Tourer I briefly had used a Nervar crank and BB, a double.
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Old 02-04-12, 04:20 PM   #5
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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.

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Old 02-04-12, 04:29 PM   #6
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Great help so far, guys. Any idea of a direct replacement? Mine does have the Nervar bits.

Many thanks!

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Old 02-04-12, 06:18 PM   #7
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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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