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PostPosted: Sun Feb 09, 2020 8:34 pm 
Dirt Disciple
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Joined: Thu Jun 22, 2017 7:57 pm
Posts: 29
Location: Bristol
Any suggestions on how to get this bottom bracket out? its a cartridge type with alloy cups apparently. I've dumped a lot of plusgas down the seat tube but that hasn't made a dent in it.

The tool bent while I was stood on the frame and using an extension bar over the end of it.

Edit: See my post on page 3.


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Last edited by darylw357 on Fri Feb 28, 2020 7:41 pm, edited 1 time in total.
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PostPosted: Sun Feb 09, 2020 9:02 pm 
Retro Guru

Joined: Fri Sep 02, 2016 9:54 pm
Posts: 567
Ill just check for school boy error we all do it the drive side is usually left hand thread so undoes clockwise?

Have you managed to get the other end undone?


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PostPosted: Sun Feb 09, 2020 9:19 pm 
Dirt Disciple
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Location: Bristol
Paul R wrote:
Ill just check for school boy error we all do it the drive side is usually left hand thread so undoes clockwise?

Have you managed to get the other end undone?


Ah this is the non-drive side, I'm just using the drive crank to hold the tool in place. I'm certain I'm turning it in the correct direction.


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PostPosted: Sun Feb 09, 2020 11:52 pm 
Old School Grand Master
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Location: Cumbria
Not sure you need to hold the drive side while you attack the non drive side.....


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PostPosted: Mon Feb 10, 2020 9:05 am 
Retro Guru

Joined: Wed Dec 10, 2008 9:19 am
Posts: 2673
Midlife wrote:
Not sure you need to hold the drive side while you attack the non drive side.....

I don't think he's doing anything with the drive side ?? he's just working on the left side and has mounted the chainset on the left side to hold the tool in place.

i'd have a go at sawing flats on the cup and then putting the sawn (and still attached) cup in a bench vice and holding turning the frame to get some good leverage


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PostPosted: Mon Feb 10, 2020 10:43 am 
Retro Guru
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Location: It's not easy being a dolphin.
Italian frame?


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 Post subject: Re:
PostPosted: Mon Feb 10, 2020 10:48 am 
rBoTM Winner
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Joined: Thu Aug 07, 2008 11:54 am
Posts: 1676
Location: Derby
I would take the chainset off first .
Get one of these .
https://www.swinnertoncycles.co.uk/work ... gLN5vD_BwE

Campag sold their own version at one time { Part no 1130050} . Put tool in a vice . Then slowly move frame back and forth once the fixed cup is located onto the tool in order to crack it.


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PostPosted: Mon Feb 10, 2020 10:49 am 
rBoTM Winner
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Joined: Thu Aug 07, 2008 11:54 am
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Location: Derby
Woz wrote:
Italian frame?


I was thinking the same .


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PostPosted: Mon Feb 10, 2020 12:06 pm 
Retro Guru

Joined: Sun Aug 22, 2010 7:07 pm
Posts: 1735
Location: Cotswolds
British or Italian the left cup would be Right Hand Thread, so in the second picture the blue tool would have to go upwards.

Keith
Probably used some thread locking? Possibly warm it up a bit.
Might have to devise some impact.


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PostPosted: Mon Feb 10, 2020 12:11 pm 
Dirt Disciple

Joined: Mon Mar 18, 2019 7:59 pm
Posts: 36
Hi Daryl,
I think there are some helpful and confused comments here so far.
Let's try to establish what you have shown and said so far, and progress from there.
If I see your photos and read your descriptions correctly, what you have here is:

1: A stuck non-drive side bottom bracket cup/sleeve.
2. On the same side as which you have held the removal tool on by attaching the drive-side crank and chain rings (which I think is quite inventive).
3. This end of the BB is a Right-hand thread on ALL bike frames (according to Sheldon Brown anyway)
4. . The 1st photo would imply the natural application of force you are applying is downwards on the tool handle (which is what I would be doing with the assembly in that arrangement and frame orientation, and this is a clockwise turning action.
5. If this is correct, you are TIGHTENING the BB sleeve, it being a Right - hand thread.
6.In the 1st photo with the fame that way up with the tool in that position, you need to be pulling that tool handle UPWARDS.
This is turning it COUNTER CLOCKWISE, and with luck will unthread the RH-threaded BB cup/sleeve.

You may have fully tightened that cup/sleeve in your efforts, so may well need to use the other techniques suggested to get adequate purchase and turning force, but you can't lose anything by giving your current way a try first.

Best of luck, and I hope to have been of some help, and managed to make clearer some of the fog of well intentioned suggestions given earlier.
Regards,
Robin.
531Man.


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