BB threading
#1
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BB threading
I currently have a 68mm traditional 3 piece cup and cone bottom bracket.
if the cups tighten like british/iso (left side tightens right, right side tightens left) style bottom brackets, does it necessarily mean that the thread sizing is that of a british/iso style bottom bracket (1.370" X 24 tpi)?
then if this is true, upgrading to a sealed bb should work? and if it doesn't i'm screwed?
I could pull out the cups and measure the threads, but i spent a good part of today fitting/hammering/smashing/grinding the cotters all nice like to fit. I don't want to do it again.
if the cups tighten like british/iso (left side tightens right, right side tightens left) style bottom brackets, does it necessarily mean that the thread sizing is that of a british/iso style bottom bracket (1.370" X 24 tpi)?
then if this is true, upgrading to a sealed bb should work? and if it doesn't i'm screwed?
I could pull out the cups and measure the threads, but i spent a good part of today fitting/hammering/smashing/grinding the cotters all nice like to fit. I don't want to do it again.
#3
Banned
Brit standard, used by Japan and exporting Asian manufacturers . too.
I went Ah Ha! when I found Cotter Presses to do those jobs,
on old cottered cranks.
pushed rather than beat them out, so they get reused.
the job got civil ..
I went Ah Ha! when I found Cotter Presses to do those jobs,
on old cottered cranks.
pushed rather than beat them out, so they get reused.
the job got civil ..
Last edited by fietsbob; 10-28-10 at 06:43 PM.
#5
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I currently have a 68mm traditional 3 piece cup and cone bottom bracket.
if the cups tighten like british/iso (left side tightens right, right side tightens left) style bottom brackets, does it necessarily mean that the thread sizing is that of a british/iso style bottom bracket (1.370" X 24 tpi)?
if the cups tighten like british/iso (left side tightens right, right side tightens left) style bottom brackets, does it necessarily mean that the thread sizing is that of a british/iso style bottom bracket (1.370" X 24 tpi)?
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Jeff Wills
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#7
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Is the brand marked anywhere? If it's not a Raleigh, there's a 99% chance it's English thread, but I ran into a couple weird ones back when I was working in a shop.
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Jeff Wills
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#8
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I currently have a 68mm traditional 3 piece cup and cone bottom bracket.
if the cups tighten like british/iso (left side tightens right, right side tightens left) style bottom brackets, does it necessarily mean that the thread sizing is that of a british/iso style bottom bracket (1.370" X 24 tpi)?
if the cups tighten like british/iso (left side tightens right, right side tightens left) style bottom brackets, does it necessarily mean that the thread sizing is that of a british/iso style bottom bracket (1.370" X 24 tpi)?
What make is the bike?
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oddjob2
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09-11-12 07:56 PM