Classic & Vintage - Schwinn Sports Tourer Bottom Bracket

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.



PDA
Furyus
02-04-12, 01:35 PM
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

mkeller234
02-04-12, 02:29 PM
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?
Scooper
02-04-12, 03:10 PM
The '72 Sports Tourer had a TA double chainring crank with 54-40T. The spindle length is 4 1/2" long (114mm).

http://i32.photobucket.com/albums/d7/k4drd/Bicycles/Schwinn%20Publ%20Pages/1973P-A56-07.jpg

Rabid Koala
02-04-12, 03:12 PM
The 72 Sports Tourer I briefly had used a Nervar crank and BB, a double.
Scooper
02-04-12, 03:20 PM
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.

http://i32.photobucket.com/albums/d7/k4drd/Bicycles/Schwinn%20Publ%20Pages/1973P-A56-08.jpg
Furyus
02-04-12, 03:29 PM
Great help so far, guys. Any idea of a direct replacement? Mine does have the Nervar bits.

Many thanks!

furyus
mkeller234
02-04-12, 05:18 PM
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?