For example, means the 11th week of the year For old Treks, In the early '70s, Sun Tour freewheels were a revolutionary development, markedly superior to their European competition Atom, Cyclo, Everest, Regina etc. I Skip have Sunshine hubs from73 and the late 70s that all have that number. These derailleurs do not have date codes on them, so I believe the coding started sometime between and April of
Thus both shift levers move the chain to a higher gear when pressed forward. Component Most Wanted. On Campagnolo Record hubs, there will be a two digit code stamped on the inside face of the each lock nut. Like Loading The list above is one that will, hopefully, grow with the acquisition of experience. Most all? With two years of lead time, Shimano could afford to require that bicycle manufacturers equip their bikes with complete SIS shifting systems, minimizing problems with product compatibility.
Some were made from all Reynolds tubing.
Shimano Components - Date Code Mystery
Trek owner Larry Osborn made this observation, and suggested this as a supplementary way of dating a Trek and other bikes as well. SunTour New Winner in a half-step configuration with normal 5. Sansin Hubs Many Sansin hubs use a a two-letter date code. It was a "top normal" derailleur, in that you move the lever opposite the usual direction to shift up or down. Please consider donating a few dollars towards the web-hosting cost. The Sprint shifters included a ratchet mechanism Sun Tour Power Shift that disengaged the friction mechanism as you pull back.
Suntour Date Codes
The date code is stamped or cast? The same freewheel disassembled. The Winner Pro also had more splined sprockets and fewer threaded sprockets. However, a Gran Compe set of calipers had no markings. The freehub greatly increased the strength of the rear wheel, but the idea was not pursued. Naturally, for information provided by others, such as for the Campy and Williams codes, we suggest the original source be cited.