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Old 09-11-11 | 07:01 PM
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Glazedham42
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Joined: Sep 2011
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How do I figure out what BB I need?

Hello everyone,

This is my first post here, but I have been doing lots of reading and learning already. Great forum here. You've all already been a great deal of help, so thanks in advance. Anyway, onto the task at hand. Here's the story.... I bought a used Schwinn LeTour (late 80's vintage) a month ago, and have been doing some road riding on it. I love the old bike, and have been fixing some of the minor issues with it. I noticed that the left pedal was getting a little "crunchy" on my last ride. I figured that the bearings in the crankset were probably toast. I went ahead and tore everything down. The bearings were pretty dirty, and felt like they had some grit in them. They also appear to be a rather old style, as I expected.

I want to upgrade to a sealed cartridge type bottom bracket. Unfortunately, I'm not sure what I need to buy in order to make it work properly. Here's what I do know about the Le Tour.

-The Schwinn frame uses a 68mm English type
-The cranks are Sugino VX 170mm

I can measure other stuff if someone can clue me in on how this works, and what I need to know in order to buy the correct bottom bracket. I'm thinking that something like this may be what I need?

http://www.ebay.com/itm/Sugino-103mm...item3f0d248139



Does my replacement bottom bracket HAVE to be Sugino brand, or can I use something else? I have attached some pictures of my bike, and the collateral damage for reference as well.

Thanks!
Jamie





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