Jerome & Elizabeth Moos wrote:
> Mark, are you including the bolt on the expander plug in your statement
> about no left-hand threads? I know for a fact that at least some of the
> SunTour expander bolts were in fact left-hand thread. This is from bitter
> experience as I ruined a set of SunTour barcons trying to remove them
> while not realizing they were left-hand.
>
> BTW, why would SunTour use left-hand thread there? On some components
> (fixed cups, pedal axles) it makes sense, but what possible purpose could
> a left-thread serve on an expander bolt?
>
Because if you crash on the downward-pointing lever it will loosen and turn, rather than tighten and break (?).
David Snyder
Speculating in Auburn, CA