Serial numbers
※ Download: Where is the serial number on a bike
Note this posting from Bike Forum which shows the Haro serial number stamped on the bottom bracket. This was used to connect the remainder of a production run that spilled over into January of the next year.
The -OS frame style seems to have been completely replaced by the more curvaceous -6 style by 1946. If the person owned the bike, they should have no trouble answering these types of questions.
Serial numbers - Look for a wide seat.
From 1958 on, several different coding systems were used, from which the manufacture date and often the assembly date can be decifered. For pre-1948 Schwinns try taking out the crankset to check for a date code. If you have a Schwinn from this era, please, PLEASE send us pictures of your bike and serial number. We are in the process of collecting pre-1948 serial numbers in the hopes of rebuilding the date code system for this period. Schwinn's built-in kickstand was introduced in 1946. The DX style frames have a lower top-tube for lack of a better name that curves ever so slightly, however the chainstays on the Schwinn D97XE-OS 1939-41 run roughly parallel to the ground while the chainstays on the D97XE-6 1941 and the D-13 1953 droop slightly as they travel from the rear dropouts to the bottom bracket. The -OS frame style seems to have been completely replaced by the more curvaceous -6 style by 1946. I have not found any examples of the DX frame style after 1953 although the 24 inch wheel size equivalent, the J series, was around at least until 1955. I and O skipped to avoid confusion with one and zero. Le Tour and Super Le Tour models sometimes began with an 'S' followed by the Japan Made numbering system: 1972 - SA200000... In the 1980s, the 'S' began appearing in other models as well Passage, Prelude. Japan Made numbering system: Letter is the month, number in the first or second position is the year. Locating the Serial Number 1960 - 1969 Chicago built Schwinn serial numbers are found on the left rear axle-hanger or fork-end on the frame. The 1970 Super Sports with Huret dropouts seem to have used a two digit year 'C70204' -- March, 1970, 204th frame. The 1978-1983 Le Tour and Super Le Tour models had their serial numbers on the left rear axle hanger and many began with an 'S', followed by the Japan Made numbering system. The number will have a production month letter in either the first or second position and a production year number in the other first or second position. Beginning in the 1970s, many Schwinns feature a 4-digit stamp on the head badge that represents the assembly date and consists of the Julian day and the last digit of the year 1246 decodes to the 124th day of 1976 or 1986 -- use decals and components to determine the decade. The Julian dating was adopted for Schwinn's domestic production in 1976. This was used to connect the remainder of a production run that spilled over into January of the next year. X9201937 should be Month X and Year 9. But it might be Month January of Year 0. Using this logic, Y9201937 might actually have been made in February of 1980, but was a part of the 1979 production run. I'm still looking for a confirmation of this dating method. Some Taiwanese built by Giant Schwinns have a date code on the right rear axle hanger or on the bottom bracket shell in the format 'Gmmyy'.
This image from the City of Portland police shows the common places for bicycle serial numbers. And now you've got your serial number in your phone and the cloud so you can't lose it. Feel free to ask very specific questions about it. While the majority are on the bottom bracket, some are stamped very faintly into the rear dropouts. In today's post we'll check out where to find your ride's serial number and what to do with that info to keep your bike secure. X9201937 should be Month X and Year 9. Identify Schwinns produced before 1948 by looking for either of these serial numbers: B12818 or Z12993. Now that you've got your serial number recorded in several redundant systemsyou can focus on the important things - like riding. There is nothing inherently negative about getting a. Scope of Warranties Haibike: Two year warranty on the entirety of the electric bicycle.
