The most likely components to be original are the stem, handlebars, seatpost, and brakes. Swaps also can be made as the bike falls out of favor, or is being sold, where the higher quality components are traded for lower quality ones that the owner had onhand. You may see them anywhere, they may turn up anywhere, including eBay. For old Treks, Click on the GTCC letters below to enter a bicycle history experience like no other anywhere, any time. There are date codes on some Nitto stems. Maillard Hubs and Pedals Maillard used an open dating system for their hubs and pedals. Want to be a classic bicycle expert? Also gathered on this page are date codes decoded and generously provided by others. The first pair of numbers is the numerical week of the year, 01 to Unfortunately, many of these are coded, and require some additional knowledge to understand the code. If you have tried this link unsuccessfully in the past, please try it again now. However, a Gran Compe set of calipers had no markings. A new section devoted to showing samples of our massive original antique and classic vintage bicycle literature section is presently under construction and coming soon! Thanks to Erik Frey for providing this information. Now online in GTCC! Watch for it here!
Weinmann and Dia-Compe calipers usually have codes on the back of a caliper arm. You'll see it all here. Virtually all of the Treks not equipped with Campagnolo or Shimano Dura-Ace components, started life with some grade of SR seatpost and may also have SR stems, bars or cranks. Swaps can take place early in the life of a bike as the proud new owner upgrades to new or used components of higher quality. You'll be amazed, perhaps amused and certainly informed-and the only place you'll find it all is here at NBHAA. Even those equipped with Suntour Superbe components usually had SR seatposts. Better yet - if you know the meaning of the letter code, please let me know. Especially useful, and challenging to sort out and verify, was the Shimano code. Our thanks to all who submitted codes. In this website, we credit the people involved in the understanding of these codes. Many components are marked with size descriptors in addition to component manufacturer's date codes. On a vintage bike in excellent condition that apparently had a lonely existence in a garage all of the components likely are original. Nitto We are trying to sort out the manufacturer's date code on Nitto handlebars and stems. For Treks, the SR date markings are especially important. The latter part of this period was for Sachs-Huret derailleurs, after the purchase of Huret by Sachs. This can be simple like "" month 07, or a clock-type, with year in the middle and a ring of numbers with a tickmark pointing to the month. Huret Derailleurs Huret front and rear derailleurs often have a four-digit date code. Also gathered on this page are date codes decoded and generously provided by others. Are you a serious bicycle historian or restorer? If you have confirmation of the date codes, or corrections or additions to the codes, please contact me. And to be included in this section is our historic tour of the old Schwinn Plant in Chicago! Now online in GTCC! The first pair of numbers is the numerical week of the year, 01 to Pull the lever and look inside the top of the lever arm for a code such as " I have a set of Dia-Compe mountain levers where if you pull the lever all the way, a piece of the lever is exposed, which has a clock-type date code.
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