Originally Posted by
cudak888
The site states that the threads directly on the crankarm (traditional extractor threads) are reverse thread, when the self-extracting bolt has been removed. The bolt itself is standard-thread.
-Kurt
Cut and paste from your site:
"*Campagnolo's C-Record, Croce d'Aune, and Victory use 22mm
left-hand extractor threads on the left-hand crankarm only. "
That statement is wrong. Both crankarms are left hand thread. The phot in my original post is of the bolt from the drive (right) side and is obviously left hand threaded.
The comment I made about right hand thread was to demonstrate that it made no sense to have one side left and the other right, given that both crank bolts are right and the point of having the extractor left threaded was so it didn't unscrew with the bolt.
Mind you there's a long history of decisions that make no sense in crank bolt and extractor design, as per earlier posts in this thread.