Ride, Wrench, Swap, Race
Join Date: Jan 2010
Location: Northern California
Posts: 9,194
Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.
Mentioned: 132 Post(s)
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A cotter press is no guarantee that even a virgin cotter with thick 7mm+ (Whitworth fine-pitch) stud will press free without bending.
If such a valuable cotter shows even a hint of bending, apply heat to the smoke point before tightening the cotter press further.
I leave the cotter press in place, tensioned, while applying heating cycles, which I feel helps the cotter to migrate in the free direction.