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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 12-23-05, 09:22 PM   #1
raygunner
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DURA ACE 7600 crank on DA 7610 bottom bracket

I just scored this nice Dura-Ace NJS groupo but the BB is a DA 7610 and the crank is DA 7600.

I threw them on but they don't look right, too much of the spindle is exposed. Though the DA 7600 BB has the same sindle length as the 7610.

Am I missing something?
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Old 12-23-05, 09:34 PM   #2
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did you tighten the crank fastening bolts?
how is the chainline?
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Old 12-23-05, 09:35 PM   #3
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that is the proper match. i have the same setup and it provides a perfect chainline. 109mm spindle. i didn't notice anything too strange looking. your best bet is to measure and be sure.
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Old 12-23-05, 09:50 PM   #4
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looking at my bike a second ago, you might be perceiving that the spindle is longer because, in cartridge bottom brackets, the cups are recessed a couple of mm from the outside of the bottom bracket shell to where the bearing/seal actually is, which shows more of the spindle, making it appear longer. on standard loose bearing setups, the cups have flat surfaces that are flush with the outside of the bottom bracket shell. you will "see" a longer spindle on the cartridge relative to this. i hope this makes sense and clears up the situation.
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Old 12-23-05, 09:55 PM   #5
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Quote:
Originally Posted by shants
looking at my bike a second ago, you might be perceiving that the spindle is longer because, in cartridge bottom brackets, the cups are recessed a couple of mm from the outside of the bottom bracket shell to where the bearing/seal actually is, which shows more of the spindle, making it appear longer. on standard loose bearing setups, the cups have flat surfaces that are flush with the outside of the bottom bracket shell. you will "see" a longer spindle on the cartridge relative to this. i hope this makes sense and clears up the situation.
That makes perfect sense!

I just threw it on my new frame (a non-NJS Japanese frame, but mucho kewl!) and it works out fine. Now I just need a 48t chainring & swap out that pesky 49t...
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Old 12-23-05, 10:00 PM   #6
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****ing shants to the rescue!
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Old 12-24-05, 01:22 AM   #7
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Originally Posted by raygunner
That makes perfect sense!

I just threw it on my new frame (a non-NJS Japanese frame, but mucho kewl!) and it works out fine. Now I just need a 48t chainring & swap out that pesky 49t...
i'll swap your my sugino 1/8 48t for your 49, if it's 1/8.
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Old 12-24-05, 11:37 AM   #8
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What's so pesky about a 49t ring?
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Old 12-24-05, 11:39 AM   #9
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I'm a 48x16 guy
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Old 12-24-05, 11:56 AM   #10
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I'm a 48x16 guy
Two skid spots!
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Old 12-24-05, 11:59 AM   #11
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one skid spot.
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Old 12-24-05, 12:03 PM   #12
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you ****ing nerds...go celebrate not being online or something.
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Old 12-24-05, 12:29 PM   #13
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one skid spot.
You can skid with both feet forward, homie.
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Old 12-24-05, 12:29 PM   #14
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you ****ing nerds...go celebrate not being online or something.
I'm actually at work bored out of my skull. 1 1/2 hours left!
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