Originally Posted by
JohnDThompson
The retaining rings for the Campagnolo Victory and other Campagnolo self-extractors were left hand thread on both sides, but the Allen bolt that actually pushed against the ring to remove the arm are standard thread. Unless the self-extractor was removed from the arm for some reason, there was no need to mess with the left hand thread. Shimano and other self-extractors used standard 22 x 1 thread for their equipment.
thanks for that.
this is a campy bb from the late '70s that has its drive-side crank bolt stuck.
so i'm really talking about the thread direction of the spindle that receives the bolt that pulls and holds the arm secure.
was there ever a spindle reverse threaded?
i think this previous owner, for whatever reason, liked these 6mm allen key bolts instead of the normal 14mm or 15mm ones, 'cause another of the bikes i got from him had these same bolts in a sugino mighty crank.