Framebuilders - Fork Brazing

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mousepants
02-12-10, 10:02 PM
Hi everyone. I have a problem with a steel lugged fork with a bent steerer and a potential solution. For the sake of curiosity I would like to try to replace the steerer; unbraze it and braze in a new one. I want to know if anyone has attempted this operation and if so what were the results; perhaps you could answer some of my questions.. such as.. while unbrazing the steerer would the rest of the crown come apart? Perhaps someone has a jig design they could share...

mousepants
02-12-10, 10:05 PM
Hi everyone. I have a problem with a steel lugged fork with a bent steerer and a potential solution. For the sake of curiosity I would like to try to replace the steerer; unbraze it and braze in a new one. I want to know if anyone has attempted this operation and if so what were the results; perhaps you could answer some of my questions.. such as.. while unbrazing the steerer would the rest of the crown come apart? Perhaps someone has a jig design they could share...
Scooper
02-12-10, 10:43 PM
See THIS THREAD (http://forums.roadbikereview.com/showthread.php?t=200552), particularly Dave Kirk's entry where he talks about all of the heat cycles the crown is subjected to when performing this operation.

legalize_it
02-13-10, 06:16 PM
unbrazing a steerer from a crown is a mighty task, you will need a lot of heat, i cant imagine anything but a hearth brazing setup would make it do-able. a better alternative is to cut and grind the steerer out of the crown.
i wouldnt use that re-brazed fork for anything other than practice brazing.
legalize_it
02-13-10, 06:17 PM
unbrazing a steerer from a crown is a mighty task, you will need a lot of heat, i cant imagine anything but a hearth brazing setup would make it do-able. a better alternative is to cut and grind the steerer out of the crown.
i wouldnt use that re-brazed fork for anything other than practice brazing.