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Old 04-06-06, 07:08 AM   #1
TheCahill
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Stuck BB no I mean REALLY stuck!!

ok so i got an aluminum frame w/ a BB stuck in it. thought i might just be too weak to get it out so i take it to my LBS they look at and say "no problem" first one guy tries.. then another... then the two of them together.. then a third thinks there just playing around and tries... then all three... finaly they hand the frame back to me and say "well thats the first BB we have not been able to remove". so i take it home and there it sits in a bath of Liquid Wrench.

My Question is if the liquid wrench fails what should i try next?!?
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Old 04-06-06, 07:10 AM   #2
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try a small propane torch.

Use it to heat up the bb frame, then try to pry it out again. it should break loose easily.
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Old 04-06-06, 07:17 AM   #3
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Originally Posted by fordfasterr
try a small propane torch.
AFTER you've cleaned up that liquid wrench stuff. Fireball, anyone?
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Old 04-06-06, 07:22 AM   #4
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Cool this was on my list of "last resorts"
amonia is recomended by sheldon brown for aluminum on aluminum stuck seat posts so thats on the list too!
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Old 04-06-06, 07:36 AM   #5
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Quote:
Originally Posted by TheCahill
Cool this was on my list of "last resorts"
amonia is recomended by sheldon brown for aluminum on aluminum stuck seat posts so thats on the list too!
Be careful using strong bases on aluminum. Ammonia in water is a very strong base and can react with the aluminum. If it doesn't dissolve it, it may still weaken it. You'll salvage the bottom bracket but I don't think that's what you are really trying to save.
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Old 04-06-06, 07:49 AM   #6
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Be careful using strong bases on aluminum. Ammonia in water is a very strong base and can react with the aluminum. If it doesn't dissolve it, it may still weaken it. You'll salvage the bottom bracket but I don't think that's what you are really trying to save.
Wow, thanks for the warning, ill prolly be avoiding that as the BB is definatly not my worry, in fact the BB can goto hell and i may just send it there when i get it out, the frame is definatly on my "save" list haha.

I am going to make sure that the BB is aluminum as i suspected tonight. im just hoping the wrench will do its wonders!

Keep the ideas/encoragement/warnings coming ill need all the help i can get on this bad boy
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Old 04-06-06, 07:51 AM   #7
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make jon fix it, he got you into this, he can get you out.
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Old 04-06-06, 07:54 AM   #8
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make jon fix it, he got you into this, he can get you out.
DAMN why didnt i think of that.. Jeff, your a genious!! now where is that fisch.....
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Old 04-06-06, 07:57 AM   #9
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I'm right here, and I just linked you to the auction - I don't recall any gun to your head making you buy it. But of course, I'll help if I can. You've already heard a few of my suggestions...
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Old 04-06-06, 08:07 AM   #10
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Is it a cartridge BB and if it is what brand? Will neither side come loose? If you got one side out which side, drive or non, is still stuck?
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Old 04-06-06, 08:13 AM   #11
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Originally Posted by Rev.Chuck
Is it a cartridge BB and if it is what brand? Will neither side come loose? If you got one side out which side, drive or non, is still stuck?
Naw man its both sides stuck like a motha... the LBS guys broke a ratchette trying to get it out, i was stading there and i saw the rachette break with the force of 3 of em trying to unstick this bastard.

in any event i dont know the maker atho i assume its original equipment and that would make it a Real, 103mm spindle
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Old 04-06-06, 10:01 AM   #12
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Your answer wasn't clear, but if it's cone and cup, relief cut the cups with a dremel. Angle grindering off the axle might help with this as well. Try all the other stuff and the torch as well before you reach for the Implements of Destruction™, but sometimes that's all that will work. If you can get the lockring off, you can also dremel the adjustable cup off so you can get the axle out, then it's sawzall time.

If it's cartridge, you may be hosed, but if you have a good breaker bar (not a rachet), a tool with splines that aren't rounded off (bunged up ones can be ground down to where the splines are still good), and a long enough cheater stick, and a torch, something has got to give.
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Old 04-06-06, 11:05 AM   #13
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Sorry it is a cartridge, (thought i had said but your right i wasnt clear) gona try the liquid wrench, then the torch and cheaterstick, with luck and a little elbow grease this bad boy WILL come off.... or the frame will bend, either way....
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Old 04-06-06, 11:50 AM   #14
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You want to use a BB tool with some big wrench flats on it. Use a long bolt threaded for the axle and clamp the tool to the BB(Pedros makes a tool for this if you can't find a bolt) Clamp everything in the biggest vice you can find and make like you are turning the bus. Make sure you go the right way, it seems backwards when you do it this way.
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Old 04-06-06, 12:58 PM   #15
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Quote:
Originally Posted by Rev.Chuck
You want to use a BB tool with some big wrench flats on it. Use a long bolt threaded for the axle and clamp the tool to the BB(Pedros makes a tool for this if you can't find a bolt) Clamp everything in the biggest vice you can find and make like you are turning the bus. Make sure you go the right way, it seems backwards when you do it this way.
Hehe, this is what we did at the local Bike shop, 1lb more or torqe and i would have had a bent frame, instead the ratchet broke off the wrench.. gona try the same thing w/ a regular wrench (ive got one for this size that almost 3 feet long and weighs about 3 pounds) got a cheater stick to put on it may get another foot out of it.
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Old 04-06-06, 01:08 PM   #16
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Ratchets are not meant for breaking things loose. Hence, the broken ratchet. That is what breaker bars are for. You can get breaker bars in different lengths. And you can put a whole lot more torque on them.

It does sound like you are going to have to use chemicals and heat, so you don't damage the frame.
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Old 04-06-06, 01:51 PM   #17
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Ratchets are not meant for breaking things loose. Hence, the broken ratchet. That is what breaker bars are for. You can get breaker bars in different lengths. And you can put a whole lot more torque on them.
Aye, ive got a pretty good sized wrench with a decent break arm, then i also have a 5 foot steel pipe that could be used as a break arm but i hesitate to pull out the widow maker so soon

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It does sound like you are going to have to use chemicals and heat, so you don't damage the frame.
Chemicals Check, heat..... waiting on that as i would really hate to set my self, my house, my bike or any combonation of the three on fire hahaha.
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Old 04-06-06, 02:07 PM   #18
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I was going to post a thread about this same problem I'm having. I was just about to poke my eye balls out.

Anyway, so chemical is the next stage?
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Old 04-06-06, 02:08 PM   #19
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I was going to post a thread about this same problem I'm having. I was just about to poke my eye balls out.

Anyway, so chemical is the next stage?
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Old 04-06-06, 05:18 PM   #20
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If you dont mind possibly breaking your BB tool, then use an impact wrench.
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Old 04-06-06, 09:35 PM   #21
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Try the ammonia - minutes wont do any damage, overnight might. Also use heat - boiling water should be sufficient as Aluminum has a high coefficient of expansion, and boiling water wont be hot enough to affect the heat treatment of the al alloy.
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Old 04-06-06, 09:55 PM   #22
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What you might have is what's known as galvanic bonding. When two dissimilar metals are introduced to each other and then subjected to corrosion (such as from water, road salt, etc.) the metals will essentially weld themselves together.

If the BB is not aluminum, that's probably what happened. Heat can make things worse.

I am a wrench in an LBS and we see this once in a while. It probably happened because the bottom bracket wasn't greased well or whoever put it in did not seal everything up correctly.

it is very hard to split apart. This is pretty common in boats, I am told. If you have a marina or boat dealer near you, ask them how they get the pieces apart.
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Old 04-06-06, 11:54 PM   #23
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.....This is pretty common in boats, I am told. If you have a marina or boat dealer near you, ask them how they get the pieces apart.
I think that they just use the offending assembly as an anchor for their boat.

Quote:
Originally Posted by ponchotempest
If you dont mind possibly breaking your BB tool, then use an impact wrench.
If you use an impact wrench, then you might be well served by following Rev.Chuck's advice about clamping the BB tool to the BB.

Giving it a few sharp raps with a wrench might help to loosen things up a bit. (Just remember that you're NOT trying to deform anything. The idea is that the vibrations that we hear as a metallic ring may weaken the corrosion.)
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Old 04-07-06, 12:47 AM   #24
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Old 04-07-06, 04:29 AM   #25
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Quote:
Originally Posted by ponchotempest
If you dont mind possibly breaking your BB tool, then use an impact wrench.
I was going to suggest this as well. Your local tire dealer will have one of these mothers. Another method would be to put the BB tool in a large vice and use the bike frame itself as a "breaker bar" by using a bouncing back in forth motion to try and unstick the BB. Be careful of the frame welds, in other words do this without getting p***ed really torquing the hell out of the frame. Good Luck.
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