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PostPosted: Thu Mar 21, 2013 11:12 pm 
Retro Guru

Joined: Wed Jan 18, 2012 12:37 pm
Posts: 426
Location: Derby
My latest project is a 95 lava dome which looks to have sat for years and years. Consequently the seat post and bottom bracket are seized solid. I'm not too fussed about the post as I can always resort to caustic soda but the bottom bracket is a worry.

Tonight I've tried my usual method of holding the bottom bracket tool in place with a bolt screwed into the axle , clamping the bottom bracket tool in the vice and then using the frame add a lever to turn the BB .

however this bb does not want to move, and in the end my tool snapped.Thankfully the teeth on the BB are not damaged so all isnt lost yet.I'm going to order another tool and try again but has anyone got any handy tips that might help shift it?

it's a square taper by the way.


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PostPosted: Thu Mar 21, 2013 11:24 pm 
Old School Hero

Joined: Thu Nov 13, 2008 5:41 pm
Posts: 173
I got one out by using a g clamp to hold the tool in, then adding an extenion to the socket wrench on the tool. The extension was simply a random piec of pipe that fitted. Bike still had wheels on to make things easier.


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PostPosted: Thu Mar 21, 2013 11:33 pm 
retrobike rider
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Joined: Fri May 14, 2010 10:08 pm
Posts: 1326
Location: West Midlands
dvatcmark wrote:
Tonight I've tried my usual method of holding the bottom bracket tool in place with a bolt screwed into the axle , clamping the bottom bracket tool in the vice and then using the frame add a lever to turn the BB .


I think your method for removal sounds perfect, seems like this bottom bracket is well seized and would benefit from a few days soaking in a penetrating oil such as "plus gas" before you try again.

Also if you're not too concerned about damaging the paint you could try applying some heat to the area.


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PostPosted: Thu Mar 21, 2013 11:35 pm 
Retro Guru

Joined: Sun Aug 07, 2011 10:55 am
Posts: 2922
Location: Dorset
Plus gas is worth its weight in gold, got me out of many problems especially with 25 year old suspension bolts on the old car 8)


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PostPosted: Thu Mar 21, 2013 11:43 pm 
Retro Guru

Joined: Wed Jan 18, 2012 12:37 pm
Posts: 426
Location: Derby
Sounds like a plan, is plus gas with the extra over a generic penetrating oil?
Regarding a new BB tool, are there any tried and tested one's out there? I'm drawn to the park bbt22, but it's it actually any stronger than something like the superstar one which is 1/3 of the price


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PostPosted: Fri Mar 22, 2013 12:11 am 
retrobike rider
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Joined: Fri May 14, 2010 10:08 pm
Posts: 1326
Location: West Midlands
I really don't know the science behind it but Plus gas just seems to do the job. It's a product that's been around years, I remember my dad using it to great effect on seized bleed nipples and such.

I've got a couple of bb tools, nothing fancy, one of them is this http://www.chainreactioncycles.com/Mode ... elID=14914 . Being a bit of a scrapyard scavenger, I'm no stranger to a difficult bb, but using the tool in the vice and bolted to the bb has never failed yet.


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PostPosted: Fri Mar 22, 2013 11:13 am 
Newbie

Joined: Mon Mar 26, 2012 3:53 pm
Posts: 3
Grind a notch for a chisel in the BB body using an angle grinder. Then hammer loose clockwise(links).


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PostPosted: Fri Mar 22, 2013 12:11 pm 
Retro Guru
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Joined: Tue Nov 14, 2006 8:11 pm
Posts: 1181
Location: Hobbiton-on-the-Water
For one off use buy cheap tools, for those you'll use over and over again go Park. My Park bb tool take a ratchet handle. Very definitely worth the extra money


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