bottom bracket assistance
04-14-13 | 09:53 PM
#1
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Joined: Apr 2013
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bottom bracket assistance
I recently bought a new bottom bracket . My issue with it is the drive-side of the bottom bracket doesnt tighten all the way. It's atleast 3/4 in. However, the non-drive side ( left side ) cup tightens in all the way. What could be the issue ,how can i get it fixed , and is it ride-able? It is pretty sealed tight, so my main question is whether its rideable like that or not.
04-14-13 | 10:37 PM
#3
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From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Often slightly mis-aligned threads on the BB shell make the second side very difficult to tighten. I always take a minute to check the threads on both sides (both the BB and the BB shell) by trying each side separately. If each side threads by itself, but not together, then you're looking at a thread alignment problem.
Sometimes, besides using grease, it can be easier to thread both sides together at the same time, then when nearly all the way, stop and finish the fixed side to the bottom, then finish the 2nd side.
Sometimes, besides using grease, it can be easier to thread both sides together at the same time, then when nearly all the way, stop and finish the fixed side to the bottom, then finish the 2nd side.
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An ounce of diagnosis is worth a pound of cure.
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
04-14-13 | 10:56 PM
#4
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Joined: Apr 2013
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Often slightly mis-aligned threads on the BB shell make the second side very difficult to tighten. I always take a minute to check the threads on both sides (both the BB and the BB shell) by trying each side separately. If each side threads by itself, but not together, then you're looking at a thread alignment problem.
Sometimes, besides using grease, it can be easier to thread both sides together at the same time, then when nearly all the way, stop and finish the fixed side to the bottom, then finish the 2nd side.
Sometimes, besides using grease, it can be easier to thread both sides together at the same time, then when nearly all the way, stop and finish the fixed side to the bottom, then finish the 2nd side.
04-15-13 | 03:51 AM
#6
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From: NW UK
Bikes: 1992 Marin Eldridge Grade, 2007 Kona PHD and 199? Trek 1000 (current build project)
04-15-13 | 08:05 AM
#7
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Joined: Apr 2009
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From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Not until you get the BB installed properly. If you ride it that way it'll loosed very quickly, and you might do some damage to the threads.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
04-15-13 | 08:25 AM
#8
Senior Member
Joined: Sep 2012
Posts: 1,751
Likes: 7
I recently bought a new bottom bracket . My issue with it is the drive-side of the bottom bracket doesnt tighten all the way. It's atleast 3/4 in. However, the non-drive side ( left side ) cup tightens in all the way. What could be the issue ,how can i get it fixed , and is it ride-able? It is pretty sealed tight, so my main question is whether its rideable like that or not.
When the drive side cup (aka Fixed Cup) is right, then proceed with the other steps.
/K
