Rust in BB a problem?
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Rust in BB a problem?
Postby blick » Mon Oct 01, 2012 5:02 pm
The frame is a ~1990s shogun team issue, tange prestige. A bit of surface rust here and there but otherwise rest of bike is in good shape
Trying to replace the BB with a cartidge BB. Got the left locknut off with no problems and found the spindle had deep grooves and lots of pitting at both ends.
Right side is stuck fast. After half a can of wd40, and several attempts with a bench vise I still cant get the locknut off. I cleaned out the BB as best I could with rag and screwdriver and this is what I could see. It looks like more than a little surface rust to me. I'm afraid removing the locknut might damage the frame beyond repair
detailed photos of my bike can be found here
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Re: Rust in BB a problem?
Postby bychosis » Mon Oct 01, 2012 5:18 pm
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Re: Rust in BB a problem?
Postby barkmadly » Mon Oct 01, 2012 6:01 pm
The heat can loosen the thread but may damage the paint. It will work though. Have fun.
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Re: Rust in BB a problem?
Postby Mustang » Mon Oct 01, 2012 6:03 pm
It cleaned the threads beaut., by forwards/reversing the drill.
70 years young.
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Re: Rust in BB a problem?
Postby blick » Mon Oct 01, 2012 6:04 pm
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Re: Rust in BB a problem?
Postby LG » Mon Oct 01, 2012 6:13 pm
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Re: Rust in BB a problem?
Postby ldrcycles » Mon Oct 01, 2012 6:36 pm
Remember, if at first you don't succeed, you're not using a big enough hammer!
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Re: Rust in BB a problem?
Postby vanbree » Mon Oct 01, 2012 9:39 pm
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Re: Rust in BB a problem?
Postby Saro28 » Tue Oct 02, 2012 6:08 am
my local has something simmilar, using it in the vice and frame as leverage. give the cup some gentle tapping to try to break the rusty bond, also around the BB in yr going to repaint
http://sheldonbrown.com/tooltips/bbcups.html
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Re: Rust in BB a problem?
Postby Mulger bill » Tue Oct 02, 2012 8:48 am
ThisLG wrote:Try harder, they can take a fair bit of force. If you can't get the vice to hold it properly, make yourself a fixed cup removal tool. Sheldon will show you how Mine is an appropriate sized bolt I had left over from when I built my house.
If a new BB is going in, go brutal onthe old one. This is Sheldons tool that LG mentioned...
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Re: Rust in BB a problem?
Postby Hoffyrider » Tue Oct 02, 2012 1:41 pm
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Re: Rust in BB a problem?
Postby Dan » Tue Oct 02, 2012 2:46 pm
Clean it up - dump a load of fish oil into it, swirl it around.
Spend a gazillion dollars on groupset.
Get the ladies.
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Re: Rust in BB a problem?
Postby blick » Tue Oct 02, 2012 9:37 pm
Fish oil, what does that do? am I supposed to put that inside the frame?diggerdantheman wrote:Clean it up - dump a load of fish oil into it, swirl it around.
Hoffyrider wrote:LBS's are sometimes your best bet (how much is your own time worth).
I'm starting to think along these lines
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Re: Rust in BB a problem?
Postby Saro28 » Tue Oct 02, 2012 9:59 pm
FWIW, i use..........
PENETROLFACT SHEET
Description
Penetrol is an air-drying, film forming, deeply penetrating mixture of natural oils. It
does not contain linseed or fish oil, has a low odour and is non-toxic when dry. With
a penetrating power 3 times that of water it goes deep into the substrate and forms a
strong bond for subsequent topcoats.
Purpose
Penetrol stops paint form peeling, cracking, and flaking; increases paint flow and
levelling. It brings life back to faded wood stains, rejuvenates old dull plastics and
fibreglass, and makes paint stick to almost anything. Penetrol stops and prevents
rust, corrosion and oxidisation. It can be used in confined and damp areas and
reduces fire and fume hazards. Withstands temperatures of over 100°C.
http://www.floodaustralia.net/brochures ... tsheet.pdf
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Re: Rust in BB a problem?
Postby sunho » Wed Oct 03, 2012 12:18 pm
that's gold. I might drop into bunnings and pick one upSaro28 wrote:Fish oil must be applied to rust free surfaces, otherwise the rust will continue to grow underneath.
FWIW, i use..........
PENETROLFACT SHEET
Description
Penetrol is an air-drying, film forming, deeply penetrating mixture of natural oils. It
does not contain linseed or fish oil, has a low odour and is non-toxic when dry. With
a penetrating power 3 times that of water it goes deep into the substrate and forms a
strong bond for subsequent topcoats.
Purpose
Penetrol stops paint form peeling, cracking, and flaking; increases paint flow and
levelling. It brings life back to faded wood stains, rejuvenates old dull plastics and
fibreglass, and makes paint stick to almost anything. Penetrol stops and prevents
rust, corrosion and oxidisation. It can be used in confined and damp areas and
reduces fire and fume hazards. Withstands temperatures of over 100°C.
http://www.floodaustralia.net/brochures ... tsheet.pdf
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Re: Rust in BB a problem?
Postby adrian_d » Wed Oct 03, 2012 12:49 pm
I'd be really keen to check out how you end up going. Well done for your persistance.
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Re: Rust in BB a problem?
Postby ldrcycles » Wed Oct 03, 2012 1:25 pm
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Re: Rust in BB a problem?
Postby JustJames » Wed Oct 03, 2012 3:15 pm
You often see really good advice on product labels.ldrcycles wrote:Kleen Bore brand 'Gunk Out' is another good one. The label does say 'death may occur without warning' but it does an exceptional job. Very good for jammed up freewheels.
Another good one which I try to live by is "keep out of reach of small children".
http://pedallingcharm.wordpress.com/" onclick="window.open(this.href);return false;
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Re: Rust in BB a problem?
Postby adrian_d » Wed Oct 03, 2012 3:53 pm
Another good sign of a good product is the ability to loose your short term memory the longer you are around the stuff haha.JustJames wrote:You often see really good advice on product labels.ldrcycles wrote:Kleen Bore brand 'Gunk Out' is another good one. The label does say 'death may occur without warning' but it does an exceptional job. Very good for jammed up freewheels.
Another good one which I try to live by is "keep out of reach of small children".
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Re: Rust in BB a problem?
Postby munga » Wed Oct 03, 2012 4:32 pm
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Re: Rust in BB a problem?
Postby BRLVR.v2 » Wed Oct 03, 2012 4:43 pm
looks like it affects ones ability to spell lose correctly.munga wrote:Another good sign of a good product is the ability to loose your short term memory the longer you are around the stuff haha.
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Re: Rust in BB a problem?
Postby Mulger bill » Wed Oct 03, 2012 6:08 pm
Naaah, blame teh interwebz for that, spelchequers are dumbBRLVR.v2 wrote:looks like it affects ones ability to spell lose correctly.munga wrote:Another good sign of a good product is the ability to loose your short term memory the longer you are around the stuff haha.
London Boy 29/12/2011
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Re: Rust in BB a problem?
Postby blick » Wed Oct 03, 2012 8:59 pm
I'm just going to drop it off at the lbs tomorrow and let them have a crack at it. Cartridge BB should be arriving in the mail any day now.
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Re: Rust in BB a problem?
Postby Saro28 » Wed Oct 03, 2012 9:25 pm
If they have the tool as above ( same sort of!) it will look so easy. Hit with WD NOW to give as much chance to soak in.blick wrote:That penetrol looks useful but will it help me get the locknut off?
NO, use Penetrol as described
I imagine it is more for protecting the BB after I've cleaned it up
YES, internally is where it will do its job and also on any external chromed or paint scratched areas.
I'm just going to drop it off at the lbs tomorrow and let them have a crack at it.
Build it, race it and show it off
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Re: Rust in BB a problem?
Postby Dan » Wed Oct 03, 2012 11:49 pm
I got it Munga, don't worry.munga wrote:Another good sign of a good product is the ability to loose your short term memory the longer you are around the stuff haha.
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