Join Date: Nov 2004
Location: Appleton WI
Bikes: Several, mostly not name brands.
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Yes, removing a tube takes a lot more heat than brazing it in place originally. Use the biggest tip you have, preferably a "rosebud" type tip and keep the entire joint molten while pulling. A trick Tim Isaac used was to drill holes in the tube stumps, stick a rod through the holes and use a bungie cord to supply the "pull" while you heat the joint. Once the tube is out, position the lug with the socket facing down and use a solder wick to pull out as much brass/silver as possible. This will make the clean-up much easier when fitting the replacement tube.
And yes, check for pins before you start, otherwise you'll destroy the lugs when you try to pull the tubes. If you find pins you can drill them out before breaking out the torch.
Last edited by JohnDThompson; 10-28-11 at 11:48 AM.