Dropout and Serial Number
Originally Posted by
santa fe 2926
Looks like the Simplex derailleur mount has been filed for campagnolo.
Any Simplex direct mount derailleur can still be used because the minor diameter of the 10mm x 1mm tapped hole is 9mm - same as the shoulder diameter on Simplex mounting screws.
Also any derailleur that has a travel stop that the fits over the front of the hanger will work. Older Shimano RDs plus some Campy RDs and others.
Originally Posted by
marius.suiram
Serial number on my 1970's PX-10 - 28513 numbers different. The OP's frame has the later Nervex DuBois style fork crown that I wouild think would be a later build. Just goes to show you cant put that much faith in serial numbers from the bike boom era.
My 1970's PX-10. I estimated it to be a late 1972 or very early 1973 bike because of the Nervex DuBois lugs and older Nervex Pro fork crown plus the longer fork rake.
verktyg
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Last edited by verktyg; 11-24-21 at 03:49 AM.