On Sun, 04 Apr 2004 19:24:10 +0100, John McDowall <jmcd@nothanks> may
have said:Hi,
I was changing the cables on my bike, and noticed that one
of the adjuster barrels on the downtube had seized.
Anyway, after applying some penetrating oil I tried to
unscrew the unit from the frame but just wound up snapping
it in two. See pics below
jmcd.nudohOpen ↗
Any idea how I can get it out? I tried drilling, but it's
not possible to get the drill parallel with the downtube
(due to the drill's size).
I'll weigh in on the side of the recommendation to get a
longer drill bit to counterbore with, but I smell a
complication. Is that frame aluminum? If so, there's
unfortunately a good chance that the broken piece is not
going to come out without mauling the threads in the boss.
Fortunately, it's a low-stress item, so there doesn't need
to be a full set of threads present in order for it to still
function, but be prepared to need to have a helicoil
installed just in case.
Alternately, if getting the stub out proves intractable, an
inline adjuster for the cable, combined with a judicious
counterbore of the boss to turn it into a ferrule, might
provide an alternate solution should there not be enough
room for a helicoil.
This might be a good time to turn the job over to a talented
lbs. Extracting broken things from small holes is something
of an art; I've done lots of them over the years, but I do
not relish the task.
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