Which alu, 7 or 6 series? 7 could be welded without heat treating thereafter.
Or do the drill bit option and have a Jubilee clip around the head tube to be doubly sure?
I seem to remember it's 7-series but don't have the frame at hand. Friday afternoon countdown at work. Also, welding is not really an option. Jubilee clip sounds like proper rat.
@Rodolfo started
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Which alu, 7 or 6 series? 7 could be welded without heat treating thereafter.
Or do the drill bit option and have a Jubilee clip around the head tube to be doubly sure?