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It sure pays to do a repair properly

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It sure pays to do a repair properly

Old 06-12-05, 06:53 PM
  #1  
cydewaze
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I just tried to cheese it and it almost cost me my bottom bracket.

A few weeks ago, the BB on my Trek started making grinding noises. Kind of a "grunt... grunt..." as I turned the pedals, always in the same spot on the right pedal downstroke. As the ride progressed, it got worse and worse.

When I got home, I pulled the cranks off and pulled the BB out. It's a BB-7700, so it has removable races (I think the proper name is cups). I slid them off the spindle, cleaned them, and examined them. They were toast, with massive pitting. I found out I could order a pair through my LBS, so I did so, and rode my spare bike until they arrived.

Well, I got them the night before a long ride (i.e. this past Friday evening) and I came home and slapped everything together. I did a light cleaning of the parts, got the BB in and adjusted, and called it done. I should have known something was wrong because it just didn't "feel" right when I spun the spindle.

The next day my gf and I did a metric century organized ride. Around halfway through the ride, the BB started making noise again. I babied it through the rest of the ride (i.e. remained seated on most of the climbs) and when I got home, I took it all apart again. Fortunately, the races weren't toast this time.

So I decided to do the proper thing and cleaned the cups with degreaser and a brush. I must have missed a lot of stuff on my previous cleaning, because the degreaser turned black almost instantly. After doing both cups, there was a ton of garbage at the bottom of the bowl, and once I had rinsed off and tried the bearings, they spun 100x easier than they had the night before.

So I re-greased and re-installed everything, and now it spins smooth as glass. I also noticed that the threaded sleeve in my carbon frame rocked a bit, and found out how to tighten it (there's a screw threaded in from the bottom of the outside of the BB, though I'm not certain that was originally intended to secure that sleeve). Did a test/recovery ride today, and boy is it quiet. No more lazy cheese jobs for me.
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Old 06-12-05, 07:40 PM
  #2  
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I worked with a Project Manager at my former job who--on her monitor--had a big, big sign that said, "Do it right the first time, Dummy!"

Li'l harsh, I thought, but all too true.

Sometimes . . . sometimes you just have to do all that you can in the alloted time, then go back and finish the job later. Sounds like you did that.

Better than riding the backup steed on a Metric C, right?

I say . . . nice job!
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Old 06-12-05, 08:31 PM
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Originally Posted by neil0502
Better than riding the backup steed on a Metric C, right?

I say . . . nice job!
Thanks, and no, I wouldn't want to ride the backup on that. It's a cheap aluminum bike and gives a rather harsh ride, and the roads on the metric were HORRIBLE! My poor gf almost got her teeth rattled out.
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Old 06-12-05, 08:52 PM
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Nice rides cydewaze.Trek looks real good for the mileage.
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Old 06-12-05, 09:31 PM
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Originally Posted by scoana
Nice rides cydewaze.Trek looks real good for the mileage.
Thanks. It has its fair share of nicks and scratches, but Trek gave me some touch-up paint when I bought the frame, so I've utilized that. Kinda funky, it's silver and purple, and you paint it with one before the other.

During this repair I noticed that the BB shell (the sleeve the BB threads into) is no longer bonded to the frame. The only thing that keeps it from wobbling is the screw threaded in from the bottom that holds the cable guides on.

Tomorrow I might call my LBS and see if there's a repair for that. I had the same thing happen to the rear brake mount, and they mailed me a free repair thingie for that too. Gotta love lifetime warranties.
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Old 06-12-05, 10:23 PM
  #6  
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Originally Posted by cydewaze
I just tried to cheese it and it almost cost me my bottom bracket.

A few weeks ago, the BB on my Trek started making grinding noises. Kind of a "grunt... grunt..." as I turned the pedals, always in the same spot on the right pedal downstroke. As the ride progressed, it got worse and worse.

When I got home, I pulled the cranks off and pulled the BB out. It's a BB-7700, so it has removable races (I think the proper name is cups). I slid them off the spindle, cleaned them, and examined them. They were toast, with massive pitting. I found out I could order a pair through my LBS, so I did so, and rode my spare bike until they arrived.

Well, I got them the night before a long ride (i.e. this past Friday evening) and I came home and slapped everything together. I did a light cleaning of the parts, got the BB in and adjusted, and called it done. I should have known something was wrong because it just didn't "feel" right when I spun the spindle.

The next day my gf and I did a metric century organized ride. Around halfway through the ride, the BB started making noise again. I babied it through the rest of the ride (i.e. remained seated on most of the climbs) and when I got home, I took it all apart again. Fortunately, the races weren't toast this time.

So I decided to do the proper thing and cleaned the cups with degreaser and a brush. I must have missed a lot of stuff on my previous cleaning, because the degreaser turned black almost instantly. After doing both cups, there was a ton of garbage at the bottom of the bowl, and once I had rinsed off and tried the bearings, they spun 100x easier than they had the night before.

So I re-greased and re-installed everything, and now it spins smooth as glass. I also noticed that the threaded sleeve in my carbon frame rocked a bit, and found out how to tighten it (there's a screw threaded in from the bottom of the outside of the BB, though I'm not certain that was originally intended to secure that sleeve). Did a test/recovery ride today, and boy is it quiet. No more lazy cheese jobs for me.

One of the greatest wisdoms that I have come across is this:

"There is never enough time to do it right, but there is always enough time to do it again"

This, in my life, has proven itself time, and time, and time again. If you know something is not right, take the time to correct it properly. Take the time to do it right the first time.
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Old 06-13-05, 08:03 AM
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Originally Posted by cascade168
One of the greatest wisdoms that I have come across is this:

"There is never enough time to do it right, but there is always enough time to do it again"

This, in my life, has proven itself time, and time, and time again. If you know something is not right, take the time to correct it properly. Take the time to do it right the first time.
\

If only I could convince some of our contractors of this philosophy, even after they have lived it so many times and have heard it from me so many times.
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Old 06-13-05, 08:24 AM
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Then there is my favorite: damn, I cut it twice and it's still too short.
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Old 06-13-05, 09:10 AM
  #9  
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Originally Posted by cascade168
One of the greatest wisdoms that I have come across is this:

"There is never enough time to do it right, but there is always enough time to do it again"

This, in my life, has proven itself time, and time, and time again. If you know something is not right, take the time to correct it properly. Take the time to do it right the first time.
My previous employer (company has been sold) never did anything right, they always had to go back and do it again. Its because they always needed "quick fixes" that ended up taking more time in the long run than just doing it right in the first place. Yeeuck, I'm glad the new owner here doesn't see things that way.
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