A Bit of Weinmann Arcana
Thanks to @
unworthy1 and @
obuckler I now have a full complement of nice shiny Weinmann bolts that attach the caliper arms to the brake body. (caliper frame?)
The new bolts are presumably from newer Weinmann brakes which are built slightly differently. The photo below shows the old bolt on the right and the new one on the left. Not only does the older bolt have a thicker head, but it also is threaded farther up the shank which is necessary for the locknut style of construction on the older brakes. A problem easily remedied by adding 4 or 5 more threads to the bolt using an m6 x 1.00 die.
Both bolts have 11mm heads. Weinmann brakes that are even newer have bolts with 10mm heads. Perhaps one of you more knowledgeable folks can fill us in on the dates and models that correlate with these bolt changes.
Brent