The trick of filling with water and putting in the freezer

**Katman** · 14th April 2012, 15:42

.....does it work along a welded seam?

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**BigAl** · 14th April 2012, 15:56

Only 1 way to find out, should work.

**Mental Trousers** · 14th April 2012, 16:31

... or you could use a little bit of lighter fluid and a match ...

**FJRider** · 14th April 2012, 16:39

From my meagre understanding of engineering ... and metalurgy ... the welded seam is the strongest point.

**mossy1200** · 14th April 2012, 16:41

Did you fall off?
Did bumble bee guy kick it when you asked to pass him?

**ducatilover** · 14th April 2012, 16:53

Hmm I expect it may work.
Or just freeze it and then pour boiling water over it?

Might have to give it a go, got a spare tank sitting here that needs some attention.

**Kickaha** · 14th April 2012, 16:57

The guys I know that repair their own braze a washer on, heat the chamber and pull it out with a slide hammer

**Katman** · 14th April 2012, 16:58

Originally Posted by mossy1200

Did you fall off?

Ask me on Monday morning.

**Katman** · 14th April 2012, 17:00

Originally Posted by Kickaha

The guys I know that repair their own braze a washer on, heat the chamber and pull it out with a slide hammer

Have popped plenty of dents out with compressed air and the oxy set but I'm hoping to keep the shiney finish.

**98tls** · 14th April 2012, 17:05

Have a gander K http://youtu.be/Fcmnde21R-0 May have to do it a few times but at least it wont discolour pipe.

**Katman** · 14th April 2012, 17:10

To be honest, I probably shouldn't bother.

By the time I've finished with the bike the expansion chamber will probably be squashed flat.

**rustic101** · 14th April 2012, 17:10

You would need to seal each end. If you don't, as the water freezes it will find the easiest point of expansion, i.e out the ends. Even if you seal the ends you then run the risk of disfiguring the remainder of the shape. Best bet is to braze, pull, grind and polish.

**Katman** · 14th April 2012, 17:12

Originally Posted by rustic101

You would need to seal each end. If you don't, as the water freezes it will find the easiest point of expansion, i.e out the ends. Even if you seal the ends you then run the risk of disfiguring the remainder of the shape. Best bet is to braze, pull, grind and polish.

I think you'll find that the narrow ends freeze first.

The middle bit does it's business once the frozen ends have sealed themselves.

(Or so I've heard).