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Steerer tube damage

Old 07-17-16, 06:27 AM
  #1  
steel23a
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Steerer tube damage

Well I have always gotten good advice so here goes again. I have a 1976 Schwinn Super Le Tour 12.2 that has some damage to the steerer tube. Some one let the bearings go at one point or another and it has a decent groove on the upper race area. It is bad enough that the bearings will shift and double up. I would like to repair or replace the tube. The thought of a shear there doesn't seem good.

Is it worth replacing the steerer tube by cutting and welding a new one on with an internal bushing to keep everything aligned when welding? I saw a You Tube video of one done and it seems doable. I have machinist and welders that could do the work. A replacement tube is less than 10 bucks, while I did see some close NOS parts on eBay for 25ish.

Should I just replace it with a similar one off eBay, or cut and splice the old one?


thanks,,

23a
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Old 07-17-16, 06:54 AM
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okane
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Originally Posted by steel23a View Post
Well I have always gotten good advice so here goes again. I have a 1976 Schwinn Super Le Tour 12.2 that has some damage to the steerer tube. Some one let the bearings go at one point or another and it has a decent groove on the upper race area. 23a
Not sure what you mean by damage to the upper race area. Races are easily replaceable and if the damage is confined to the race, pop out the old and fit a new one.

If indeed the tube is damaged I would find it much easier just to replace the fork. Easy to do and fork for this model should not be hard to find.

Of course you will need size match (longer can be cut, shorter useless) and perhaps color match depending upon your desires.
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Old 07-17-16, 06:59 AM
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T-Mar
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I'd probably just replace the entire fork. Splicing it may not work, as many steerers are butted and typically bend just above the butt. In such a case, an internal sleeve wouldn't work, unless it was machined to two different diameters. Even if you can splice it, depending on where the bend is and the length of the steerer, you may lose adequate stem insertion. Finally, the alignment after splicing may be improved but still not adequate to prevent abnormal headset wear.
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Old 07-17-16, 07:32 AM
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Moe Zhoost
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Any pictures?
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Old 07-17-16, 08:42 AM
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prathmann
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Originally Posted by steel23a View Post
Well I have always gotten good advice so here goes again. I have a 1976 Schwinn Super Le Tour 12.2 that has some damage to the steerer tube. Some one let the bearings go at one point or another and it has a decent groove on the upper race area. It is bad enough that the bearings will shift and double up. I would like to repair or replace the tube. The thought of a shear there doesn't seem good.
We had a similar issue with our tandem back in the late '70s. The steerer tube sheared just above the lower race and I still have some slightly visible scars from the resulting crash. Took the bike to a local frame maker who installed a new steerer tube and also reshaped the bottom of the head tube which had crashed into the pavement for a very reasonable price. Of course it did destroy the paint on the fork in the vicinity and we had to repaint it. Still have the bike and the fork has not given us any problems.
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Old 07-17-16, 11:15 AM
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steel23a
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Originally Posted by Moe Zhoost View Post
Any pictures?

I didn't take pics of the fork when I had it out,,,,, its is a groove in the tube itself at the point where the bearings rest,,,
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Old 07-17-16, 11:19 AM
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steel23a
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Originally Posted by okane View Post
Not sure what you mean by damage to the upper race area. Races are easily replaceable and if the damage is confined to the race, pop out the old and fit a new one.

If indeed the tube is damaged I would find it much easier just to replace the fork. Easy to do and fork for this model should not be hard to find.

Of course you will need size match (longer can be cut, shorter useless) and perhaps color match depending upon your desires.
Where would you look for a match?? eBay ??
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