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PostPosted: Sun Mar 18, 2012 10:42 pm 
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...samc suddenly realises he left the bottom bracket in ...


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PostPosted: Sun Mar 18, 2012 11:17 pm 
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Great video and narrative :lol:


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PostPosted: Mon Mar 19, 2012 12:23 am 
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Thanks very much for the video. I've had the soda for several months but still haven't had the courage to use it. This has helped. How did you plug the seat tube? How did you get all the gunk out afterwards?

T..


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PostPosted: Mon Mar 19, 2012 9:02 am 
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FluffyChicken wrote:
...samc suddenly realises he left the bottom bracket in ...


Well spotted :lol: I know but I haven't got a BB tool! I plugged the tube below the ally as best I could, but the bugger was still not watertight - hopefully the BB doesn't use too much Al; it's not exactly the best material for cups or bearings...? I guess I'll find out when I try & ride it!

@russ77 - I tried to plug the tube with some old thin sheet rubber which I rammed down as far/hard as I could, but all it does is slow down the leakage a bit so the liquid has a chance to sit on the Al. I haven't tried cleaning it out yet - reckon I'll do another melting session first... :D


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PostPosted: Mon Mar 19, 2012 9:46 am 
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Very intersteing thread 8)

You havnt mentioned that you have the stuck post out ! I may try this to a kona frame that is in need of the same fix.

Do you have picures of frame without post in ? ? i would be interested to see the aftermath 8)


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PostPosted: Mon Mar 19, 2012 10:42 am 
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Gravy Monster wrote:
Very intersteing thread 8)
You havnt mentioned that you have the stuck post out ! I may try this to a kona frame that is in need of the same fix.


I haven't finished yet.. it's melted quite a bit away but I haven't had a chance to try & get it out - I'll do another Soda session I reckon, and then clean it up and give it a good go.


Last edited by samc on Mon Mar 19, 2012 11:09 am, edited 1 time in total.

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PostPosted: Mon Mar 19, 2012 11:06 am 
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Here's some seriously high-brow videos of the process:

Image << Sort of an introduction

Image << Some of the equipment I used

Image << Measuring the temperature

Bonus: here's a video of me spilling caustic soda everywhere.

I haven't actually tried to get the thing out yet... I'll post a pic or two of the aftermath once it's done.


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PostPosted: Mon Mar 19, 2012 12:00 pm 
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yep - be interested to see photos when done.


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PostPosted: Mon Mar 19, 2012 3:16 pm 
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I have used ammonia with great success to free up stuck seatposts in the past.


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PostPosted: Mon Mar 19, 2012 4:59 pm 
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does ammonia melt it as well then? Or does it do it some other way? Would be interested to know some alternatives if I don't get it all out with the soda.


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