Tubing decals (Reynolds, Columbus, etc.) also changed designs for same tubing made in different years, although the changes aren't made as often, and manufacturers didn't always put tubing Brand decals on every model. This was used on the 'Team' models, which was their production race model from December 1979 to August 1981TH= Team Helium. He is currently the state Liberal member for Hawksbury.X= Not currently known but thought to have been used on Factory Team race bikes.Prefix codes were sometimes included and can also be used as qualifiersTF= Team Frame. This can be as short as one digit, ie, 911 for Sept, 1981, frame number 1.D= Darrell Kendell, the man who actually built the frame in the factory.Other code letters used as a suffix areM= Mark Bradley who was a frame welder, a designer, test rider & Factory Team rider.R= Ray Williams.
Eg 110xxxx X0= 1980 they used the last digit of the year & will always be 9,0,1,2,or 3.1161= the serial number of the frame.
Hi Lee and thanks others for your repliesWhat we are trying to create is a couple of things in one for the enthusiasts of this particular Australian made brand.Firstly a decoder of the number stamped on the framesSecondly an historical archive of the frames themselves including some other aspects such as paint finishes and the likeHere's the breakdown as we established it, in a little greater detailFor the frame stamped 501161D as an example5= May some serials began with 10, 11, or 12 for October, November or December. However, the real test would be with real data.Are you trying to breakout this data on bikes you own, bikes you want to purchase, or are you doing this for all of the bikes manufactured by these two?Do you have a complete list of those you want to parse out?If so, why not post it as an attachment to a Reply, so that I can get a better feel for the complete picture?HTHLee Edited Septemby Guest.
(Go online to for a list of serial numbers between 19.) Those bikes produced between 19 typically start with a letter representing the month it was produced (A=January, B=February, and so on) followed by a digit representing the year (9=1959, 0=1960, 1=1961, 2=1962, 3=1963, 4=1964).Read the serial numbers of bikes produced between 19. Those Schwinn bikes produced before 1959 have no real system to numbering but the serials typically contain six or seven numbers or letters. Those produced after these dates will usually have a serial number stamped on the bottom bracket shell (the rear axle hanger holding the wheel in place).Identify Schwinns produced before 1948 by looking for either of these serial numbers: B12818 or Z12993.Interpret the serial numbers of bikes produced between 19. Look for the serial number on the lower head tube (right above the wheel on the front of the bike) for Schwinns produced between 19.