Cranks & Chainrings
The Specialities TA crankset with Pro 5 Vis chainrings was the system of choice
for many years, due to its versatility. It could be set up as a single
double, or triple, and offered a huge variety of tooth combinations.
The chainrings can be assembled only one way
to get the crank arm centered correctly. See below:
Above: the TA triple is fumbly to assemble with a dozen spacers between the rings
but offers a wide variety of tooth-combinations.
The above-pictured crank was the model available in the 1970s;
compared with a modern one below, note the logo; also, the
pedal bore is now a through hole, where it was a blind hole before.
Above: the bolt circle has remained constant, so new chainrings fit old crank arms, and v.v.
Crank markings have been partially deciphered. 170 (175) is the arm length in mm.
For the rest, please visit
Above & below:
TA produced beautifully designed and machined
pedals in track and road versions
featuring sealed needle bearings.
The pedals can be completely disassembled for
cleaning and bearing replacement.
Above (2 fotos): last but not least,
cleats (remember those?).
Anquetil (remember him?).
I'll bet you haven't seen cleats
in unused condition for yonks.