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sugino messenger bottom bracket - left side does not screw in all the way

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sugino messenger bottom bracket - left side does not screw in all the way

Old 08-06-11, 03:14 PM
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sugino messenger bottom bracket - left side does not screw in all the way

sugino messenger bottom bracket 68x103 on a kilo tt deluxe. the left size only screws in about half way... the right side fits snug. not enough threading in the housing. is this normal?
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Old 08-06-11, 03:33 PM
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The adjustable cup on the left side should screw in so it is nearly flush with the BB shell, maybe at the most 1-2mm outside the shell. If not, the threads may be tapped badly beyond that point or it may have been cross-threaded during insertion. Can you post a photo ?
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Old 08-06-11, 03:48 PM
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it screws in a few turns beyond the tape
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Old 08-06-11, 03:51 PM
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Originally Posted by TejanoTrackie
The adjustable cup on the left side should screw in so it is nearly flush with the BB shell, maybe at the most 1-2mm outside the shell. If not, the threads may be tapped badly beyond that point or it may have been cross-threaded during insertion.
This.
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Old 08-06-11, 04:03 PM
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Originally Posted by testertips


it screws in a few turns beyond the tape
It looks like the threads on the cup are messed up. It's definitely not all the way in. The inside of the cup should be flush with the bottom bracket cartridge.
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Old 08-06-11, 04:09 PM
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with it tightened the way it is can you move the spindle side to side?
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Old 08-06-11, 04:16 PM
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Originally Posted by vw addict
with it tightened the way it is can you move the spindle side to side?
I know where you're going with this, but even if the BB is secure, the crank arm will probably rub on the cup and won't tighten properly.
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Old 08-06-11, 04:18 PM
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Originally Posted by vw addict
with it tightened the way it is can you move the spindle side to side?
no, the spindle feels secure. should it be safe to ride?

i grabbed the cup from my other bike and that one fails to screw in all the way too... could this be bad threading inside the housing?

fuugggg.. this project was going so well.

i g
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Old 08-06-11, 04:19 PM
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take the cup out and feel the threads. Also tape? Grease man, grease. Take the tape out and try it.
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Old 08-06-11, 04:22 PM
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Originally Posted by testertips
i grabbed the cup from my other bike and that one fails to screw in all the way too... could this be bad threading inside the housing?
Sounds like you need to take it to your lbs and have them retap the BB threads.
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Old 08-06-11, 04:23 PM
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how to fix if the housing threading is the issue?
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Old 08-06-11, 04:32 PM
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If the spindle is indeed tight, you may need a spacer on the drive side
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Old 08-06-11, 04:37 PM
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could a threadless bb the answer?
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Old 08-06-11, 04:42 PM
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Originally Posted by vw addict
If the spindle is indeed tight, you may need a spacer on the drive side
Incorrect. That would just move the BB the wrong way. The BB is positioned correctly. That is not the problem.
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Old 08-06-11, 04:43 PM
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Originally Posted by testertips
could a threadless bb the answer?
See post #10 for the solution.
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Old 08-06-11, 04:49 PM
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non drive cups will stick out from the BB in some cases, but not that much. If the cups are bottoming out on the spindle there is a different issue.
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Old 08-06-11, 04:57 PM
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looks like there a snag by the hole - tappable?
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Old 08-06-11, 05:02 PM
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yes
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Old 08-06-11, 05:09 PM
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cool, thanks guys
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Old 08-06-11, 07:34 PM
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in case i need a new cup, will this fit?

https://cgi.ebay.com/550-1191-Action-...item588bd9b98e
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Old 08-06-11, 08:21 PM
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Maybe. Cups can vary among manufacturers and different models. That kinda looks like the cup on a Sugino BB-7420, which is what is used on a Messenger, but I can't say for sure. Why don't you just take the BB unit to the lbs with you and see if they can match it. Also, while you are having the BB threads in the frame retapped, also have them face the right (drive) side so the cup flange will sit flush.
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Old 08-06-11, 09:12 PM
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The BB threads probably just need to be chased. Your LBS should be able to fix this for you.
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Old 08-11-11, 02:44 PM
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Originally Posted by testertips
in case i need a new cup, will this fit?

https://cgi.ebay.com/550-1191-Action-...item588bd9b98e
this does fit... got the bb shell chased at a lbs for 5 bux and now things are kosher. woohoo...
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