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-   -   Dumb Question re: Syncros BB (https://www.bikeforums.net/bicycle-mechanics/1305988-dumb-question-re-syncros-bb.html)

VtwinVince 03-06-25 05:56 PM

Dumb Question re: Syncros BB
 
I'm trying to install a vintage Syncros BB, but can't figure out how to remove one of the cups so I can get it into the BB shell. Anyone have experience with these?

jolly_codger 03-06-25 06:41 PM

If you want to get any meaningful feedback, you should post a photo of said BB or put one in an album for someone else to post.

maddog34 03-06-25 09:08 PM

twist and pull... on the couple i've seen, the cover in the center uses an o-ring, and they can get stuck to the cups sometimes.
if it has loose bearings, they'll want to scatter, so open it over a towel or clean oil pan.
some penetrant oil might help.

Kontact 03-06-25 11:13 PM

https://cimg4.ibsrv.net/gimg/bikefor...91646d66f2.png

grumpus 03-07-25 09:18 AM


Originally Posted by VtwinVince (Post 23471117)
I'm trying to install a vintage Syncros BB, but can't figure out how to remove one of the cups so I can get it into the BB shell. Anyone have experience with these?

Squirt some GT85 down the inside of the cups to make it easier to slide them off.

VtwinVince 03-07-25 10:54 AM

Thanks guys, will try and post results.

VtwinVince 03-07-25 05:38 PM

Got the thing apart with some product, unfortunately the spindle is a couple of mm too long. D'oh!

Kontact 03-07-25 06:46 PM


Originally Posted by VtwinVince (Post 23471877)
Got the thing apart with some product, unfortunately the spindle is a couple of mm too long. D'oh!

I have a 108mm that is too short. How long is yours?










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