Is this the right BB replacement?
06-16-23, 07:34 PM
#1
bill nyecycles
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Is this the right BB replacement?
A local shop installed this BB back in 2013 before I started doing a lot of stuff myself so I never really looked into it until now because I think I need to replace it because I keep getting a clunking/knocking sound and I don't think it's the freewheel though maybe it's the pedal spindle I dunno.
Anyway, going to try to replace this and see what happens.
is this: https://planetcyclery.com/shimano-bb...xoCxKsQAvD_BwE
(btw this appears to be a pretty hard to find size)
the correct replacement for my current:
Yes I measured the spindle length with calipers, it's 107mm. English threading, right?
Weird how it has a piece that snugs against the outside of the BB shell on the drive side, but sits inside the shell on the non-drive side. Is that normal for these vintage bikes?
Thanks for any help.
Anyway, going to try to replace this and see what happens.
is this: https://planetcyclery.com/shimano-bb...xoCxKsQAvD_BwE
(btw this appears to be a pretty hard to find size)
the correct replacement for my current:
Yes I measured the spindle length with calipers, it's 107mm. English threading, right?
Weird how it has a piece that snugs against the outside of the BB shell on the drive side, but sits inside the shell on the non-drive side. Is that normal for these vintage bikes?
Thanks for any help.
06-16-23, 07:49 PM
#2
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Looks like a normal cartridge square taper bottom bracket. Most likely English threading - does DS have left threads and NDS right threads?
There is also JIS vs ISO difference - most likely it is JIS.
The one you linked looks good.
There is also JIS vs ISO difference - most likely it is JIS.
The one you linked looks good.
06-16-23, 08:02 PM
#3
Senior Member
A local shop installed this BB back in 2013 before I started doing a lot of stuff myself so I never really looked into it until now because I think I need to replace it because I keep getting a clunking/knocking sound and I don't think it's the freewheel though maybe it's the pedal spindle I dunno.
Anyway, going to try to replace this and see what happens.
is this: https://planetcyclery.com/shimano-bb...xoCxKsQAvD_BwE
(btw this appears to be a pretty hard to find size)
the correct replacement for my current:
Yes I measured the spindle length with calipers, it's 107mm. English threading, right?
Weird how it has a piece that snugs against the outside of the BB shell on the drive side, but sits inside the shell on the non-drive side. Is that normal for these vintage bikes?
Thanks for any help.
Anyway, going to try to replace this and see what happens.
is this: https://planetcyclery.com/shimano-bb...xoCxKsQAvD_BwE
(btw this appears to be a pretty hard to find size)
the correct replacement for my current:
Yes I measured the spindle length with calipers, it's 107mm. English threading, right?
Weird how it has a piece that snugs against the outside of the BB shell on the drive side, but sits inside the shell on the non-drive side. Is that normal for these vintage bikes?
Thanks for any help.
Last edited by etherhuffer; 06-16-23 at 08:06 PM.
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06-17-23, 02:56 AM
#4
Method to My Madness
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For just $9 more you can get a higher quality, made in Japan one: Tange LN-3922 Square Taper Bottom Bracket – The Bikesmiths
06-17-23, 10:01 AM
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señor miembro
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06-17-23, 12:27 PM
#7
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