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Removing Vintage Bianchi Fixed Cup

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Removing Vintage Bianchi Fixed Cup

Old 12-15-18, 11:11 AM
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Freqman1
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Removing Vintage Bianchi Fixed Cup

Ok my problem is I need to remove the fixed cup so I can remove the chain guard bracket. The problem is that the lip of the bracket prevents using a standard BB tool. Is there a special tool for this? Also is this a lefty loosy/righty tighty or reverse thread on the drive side? I spent about an hour at my local LBS and tried every tool he had with no success. Any help is much appreciated. V/r Shawn

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Old 12-15-18, 11:34 AM
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DIY tool ..

Bianchi USA, has long ,several decades, used Asian OEM Factories, Got the Left one out ? what is it ? British thread,* I expect, then the fixed cup is Left hand threaded..

*1.370 x 24 tpi _ Italian thread is bigger ; at 36mm [metric equivalent of 1.37" is 34.8mm ]

Only Italian Bianchi would be importing (a very few) race bike frames.. So no chainguard..

Sheldon's BB tool https://sheldonbrown.com/tooltips/bbcups.html







...

Last edited by fietsbob; 12-15-18 at 11:45 AM.
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Old 12-15-18, 11:50 AM
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Good video here.

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Old 12-15-18, 02:30 PM
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Originally Posted by fietsbob View Post
Bianchi USA, has long ,several decades, used Asian OEM Factories, Got the Left one out ? what is it ? British thread,* I expect, then the fixed cup is Left hand threaded..

*1.370 x 24 tpi _ Italian thread is bigger ; at 36mm [metric equivalent of 1.37" is 34.8mm ]

Only Italian Bianchi would be importing (a very few) race bike frames.. So no chainguard..

Sheldon's BB tool https://sheldonbrown.com/tooltips/bbcups.html







...
This is a 1948. It wasn't imported back in the day. This bike spent its early life, at least, in France. So the video shows loosening clockwise. The other of this is counter-clockwise to loosen. I'm headed to the hardware store for bolt, nut, and washers. V/r Shawn

Last edited by Freqman1; 12-15-18 at 09:26 PM.
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Old 12-15-18, 04:44 PM
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OK same tool just unscrew The 36mm Italian threaded Fixed cup Lefty Loosie CCW,, since it being Italian both sides are right hand thread.. CW.
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Old 12-15-18, 09:33 PM
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Yep that did the trick! Thanks a bunch. V/r Shawn


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