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Bottom Bracket Issue

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Old 06-20-16 | 01:31 AM
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Bottom Bracket Issue

Hi everyone my 80's road bikes bottom bracket has developed some sort of issue.

It has developed up/down movement (not inward/outward).

I immediately thought something was loose or the bearings were shot.

I replaced the bearings with new ones BUT the issue is still there!

Everything is tighten properly so I'm not sure what is wrong.

It rode fine until this issue escalated in less than 50 miles.

Any ideas?
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Old 06-20-16 | 02:38 AM
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From: on the beach

Bikes: '73 falcon sr, '76 grand record, '84 davidson

are you saying the spindle has vertical movement of your old cup and cone bottom bracket?

and the fixed cup is tight?

and the adjustable cup is properly adjusted?

and the lock ring is secured tightly?

and the spindle has inappropriate movement without the cranks mounted?

or does the problem only occur after riding the bike with the cranks mounted?
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Old 06-20-16 | 05:24 AM
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Originally Posted by eschlwc
are you saying the spindle has vertical movement of your old cup and cone bottom bracket?

and the fixed cup is tight?

and the adjustable cup is properly adjusted?

and the lock ring is secured tightly?

and the spindle has inappropriate movement without the cranks mounted?

or does the problem only occur after riding the bike with the cranks mounted?
Thanks for the checklist. I had made a rookie mistake.

The adjustable cup needed to be adjusted properly. At least I've learnt something new.
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Old 06-20-16 | 08:45 AM
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From: Western MI
Originally Posted by eschlwc
are you saying the spindle has vertical movement of your old cup and cone bottom bracket?

and the fixed cup is tight?

and the adjustable cup is properly adjusted?

and the lock ring is secured tightly?

and the spindle has inappropriate movement without the cranks mounted?

or does the problem only occur after riding the bike with the cranks mounted?
We all saw what you did there...
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Old 06-20-16 | 02:56 PM
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Bikes: '73 falcon sr, '76 grand record, '84 davidson

Originally Posted by plonz
We all saw what you did there...
umm ...

well, he seemed to figure it out, so all is well. B^)
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