Originally Posted by
Dirt Road Blues
The Peugeot originally had a Stronglight 105 crank fitted to a Stronglight Competition bb. It looks like the previous owner swapped the Campy arms directly into the Stronglight bb and used the French fixing bolts.
By the time the Stronglight mod. 105 came out in the early 80s, Stronglight had switched to 14mm mounting bolts and 22mm extractor thread. The previous owner must have decided to unload the old 16mm bolts when selling the bike.
Originally Posted by
merziac
So you have some French thread Campy bolts and are sure they will thread into that spindle or?
Mounting bolt thread is pretty standardized at 8mm x 1mm. The only exception I've run into is early production Lambert, which could be either 5/16" x 26tpi or 5/16" x 22tpi, depending on production run.
And I would be happy to spin a socket down on the bench grinder and send it to you if need be.
Hopefully the one you have is robust enough to take down if the bolts are tight, I would get some PB in there preemptively for good measure.
That's likely what needs to be done, although as you note, the socket will be weakened and may fail if the bolt is seized. In that case, the Park CCW-16 or Zeus "peanut butter" wrenches will work, but both tools have been out of production for decades. An established bike shop may still have one.
