HERCULES BIKES SERIAL NUMBERS SERIAL NUMBERS
HERCULES BIKES SERIAL NUMBERS SERIAL NUMBER

There is also the anomoly with Bridgestone using place holders for months prior to the model year (for example, November and December of 1982 for the '83 model year would be X3 and Y3, then January would be A3), but this probably started after this Bulletin was published (don't hold me to those years). The Corvette was introduced in 1954 (for the '55 model year). I think this has been around since 1949 (at least - maybe I'm interpreting this wrong?).

Flash welding (butt welds on head and hanger projections) since 1958. 1952 - 1971 numbers were stamped on the left fork end.Д¬. But we've discussed a bunch of these Greenville-built Schwinns here, and there are inconsistencies.ДЇor a Schwinn published bulletin, this has a few errors:Д¬.

HERCULES BIKES SERIAL NUMBERS SERIAL NUMBER

Such as the serial number starting with SG4 I mentioned above, which would seem to indicate Greenville, July, 1984.

HERCULES BIKES SERIAL NUMBERS SERIAL NUMBERS

The Greenville-built Schwinns often have serial numbers starting with 'S' (which might indicate Greenville), then a letter representing month of manufacture, then a number representing year of manufacture. So, what's the formula for post 1980 Schwinn SNs, and what year does it stop being reliable?At least as far as the Schwinn le tour models go, the serial numbers weren't on the bottom bracket shell until 1984 my 1983 has the serial number on the dropout, but the '84 has it on bb shell.ДЄs far as '80's Schwinns having serial numbers that are reliable, I'm not sure many of them do, at least not the Greenville ones. Oh, but of course, for me, Schwinn time ends in 1980, since the SLDB ends in 1980. Well, yes, of course they're different!Д®r, actually, if they are, I didn't know that. Good quality, closeup pics of the frame (i.e., lugs, dropouts, etc.) and of the original components, if any, would help a lot. I have an early 80s Japanese Schwinn, and it's SN, if I recall, is on the dropout.

Edit: 1951 and before, according to 'bunchobikes'-but weren't those mostly middleweight and heavyweight, with ashtabula crank? I think that some bikes before the 1960s had SNs elsewhere, but I'm not for sure. Edit: According to a post on the Schwinn Forums by Scooper from 2006. In that case, J=September and L=November, and the second digit would be the last digit of the year (in the 1970s, I presume). If that is a Serial Number, it could be a Japanese-made frame-then the letter could be J or L, as Pastor Bob says.

Look in the other spots and see if you find anything. So I'm thinking that what you're looking at is a part ID number. No 'I's (or 'O's) were ever used in Schwinn SNs, I don't think, due to their similarity to 1 and 0.ДЄll the Schwinn SNs with which I'm familiar are on the head tube (or head badge) or on the right drop out.

Hercules bikes serial numbers