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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 04-24-06, 12:48 PM   #1
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Sugino RD --> 75 chainline problems?

Was about to swap over a set of Sugino 75's to my mostly stock pista cause the flexy stock cranks are buggin me. If all I do is spin on a 1/8" cog, add a 1/8" chain and slap on the 75's should my chainline be ballpark? I'd like to keep the stock BB as it still works fine. Thanks.
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Old 04-24-06, 12:59 PM   #2
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No.

The stock Pista has a 103mm BB. The 75's require a 109mm BB. The options for this are the matching 75 BB, the older Dura Ace track BB or Hatta Swan. All are pricey.

Most people however, get by with a Shimano 107 BB, UN53/72. It'll be just fine.
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Old 04-24-06, 01:00 PM   #3
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Check your BB. Don't most pistas have ISIS bbs? My girlfriends 03 has an ISIS and the 06s are listed as having a "Truvativ Power Spline cartridge" which you can't run a 75 on.

You'll need a taper style BB to run Sugino 75s, so will prob. have to swap the BB as well.
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Old 04-24-06, 01:05 PM   #4
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sugino rd is square taper!
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Old 04-24-06, 01:41 PM   #5
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You're right, missed the title as I was blinkered by the phrase "mostly stock pista".

The 75s are a very nice upgrade from the RDs.
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Old 04-24-06, 01:41 PM   #6
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Quote:
Originally Posted by absntr
No.

The stock Pista has a 103mm BB. The 75's require a 109mm BB. The options for this are the matching 75 BB, the older Dura Ace track BB or Hatta Swan. All are pricey.

Most people however, get by with a Shimano 107 BB, UN53/72. It'll be just fine.
Will the Phil BB work as well?
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Old 04-24-06, 01:59 PM   #7
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The Phil 110 should work -- or at least, so I've heard. You can do a search on all these issues. The search is your friend.
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