Schwinn Serial Number Reference


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bigmachine

On Training Wheels
Dec 17, 2018
5
0
54
Buffalo N.Y. Western N.Y.
I have a Schwinn Varsity with the serial number on the head tube and the four digit number on the head badge which is the correct one to reference?
 

Metacortex

Wore out three sets of tires already!
Sep 22, 2012
876
520
The Matrix
The serial number on the head tube indicates when that tube part was stamped before it was even welded into the frame. The headbadge number indicates the day the bike was built. The badge number is the most important one when dating a '76 or later Schwinn (that is when they began stamping the badges).
 
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old bike rider

On Training Wheels
Jan 18, 2019
1
0
61
Manassas, VA
I have an old Schwinn chrome-moly from late 60s early70s. There are two sets of numbers under crank, not sure which is serial number. Included head badge because I believe t to be a clue in bikes history. Bike was not painted, but chrome plated.
20190107_143306.jpg


20190107_143312.jpg


20190107_145529.jpg
 

GTs58

I'm the Wiz, and nobody beats me!
Sep 2, 2012
10,194
8,774
Central Arizona
I have an old Schwinn chrome-moly from late 60s early70s. There are two sets of numbers under crank, not sure which is serial number. Included head badge because I believe t to be a clue in bikes history. Bike was not painted, but chrome plated. View attachment 934869

View attachment 934870

View attachment 934871

Another serial number reference.
http://re-cycle.com/History/Schwinn/SwnB_Serial.aspx

With the assumed SN, I'd guess March 1982.
http://www.trfindley.com/flschwinn_1981_1990/1982_13.html
 

Metacortex

Wore out three sets of tires already!
Sep 22, 2012
876
520
The Matrix
I have an old Schwinn chrome-moly from late 60s early70s. There are two sets of numbers under crank, not sure which is serial number. Included head badge because I believe t to be a clue in bikes history. Bike was not painted, but chrome plated.
It's a 1972 World Voyageur made for Schwinn by Panasonic. The 2C0574 number is the serial, indicating that it was the 574th frame built in March 1972, which incidentally I believe was the very first month of production. It was originally painted either Kool Orange or Kool Lemon (later in '73 Opaque Blue was added). The World Voyageur was produced only in '72 and '73 and then was renamed as the Voyageur II for '74-'76. The frames on these bikes were fully chromed before painting, however they were only polished around the lugs and fork ends as those were the only chrome areas visible. Unfortunately the fact that there was rough chrome under the paint made it easily chip or otherwise come off, and when the paint became rough some removed it entirely as in your case. The World models didn't appear in the Schwinn catalogs but here was the spec. sheet for the World Voyageur in '73:

73dlsbv1b.jpg

73dlsbv2b.jpg


Here is a review that appeared in the May '73 Bicycling Magazine:

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main.php?g2_view=core.jpg
 
Last edited:

mazdaflyer

Finally riding a big boys bike
Feb 16, 2010
476
1,089
Mid-West
I’ve read through this thread, still wondering where this World Motobike might fit. Serial No = F10849.
Some of the previous posts tend to indicate 1935 frame?
95096d0773ba76a80cf328a2755c71da.jpg

3076f0d69c5d2e42d6a9052c14c3f90c.jpg

4a4dc797b28ded49c2b94f9e1ce7be1b.jpg



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Tikibar

Finally riding a big boys bike
Jun 29, 2015
307
386
Evanston, United States
mazdaflyer said:
I’ve read through this thread, still wondering where this World Motobike might fit. Serial No = F10849.
Some of the previous posts tend to indicate 1935 frame?
Interesting find as yours has serial number starting with F +five digits.
My B10 frame is similarly stamped but with F +four digits.
Serial No = F8816

Schwinn_B10_Serial.jpg

Schwinn_1936_B10_1200px.jpg
 

mazdaflyer

Finally riding a big boys bike
Feb 16, 2010
476
1,089
Mid-West
Interesting find as yours has serial number starting with F +five digits.
My B10 frame is similarly stamped but with F +four digits.
Serial No = F8816

View attachment 956187
View attachment 956188
Thanks for the response.!
Look like they could be brothers, similar paint. I’d like to see a shot of your chain guard and stem.
So what year do you think yours is?
And what rear hub does yours have?


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Tikibar

Finally riding a big boys bike
Jun 29, 2015
307
386
Evanston, United States
mazdaflyer said:
Look like the could be brothers, similar paint. I’d like to a shot of your chain guard and stem.
So what year do you think yours is?
Thanks, they do look like brothers! The B10 Brothers, lol.

When I pulled the bottom bracket apart for cleaning, the crank had 'AS 36' stamped in it, which I took to be 1936. I believe the fork and top/bottom bracket parts are original to the frame, as they had 80+ years of crud binding them together and wrestled with me like a hungry alligator to take apart. The rest of the bike was missing when I got it, so parts like the chain guard, stem, and fenders were added. If you haven't looked at the crank, it might have a number date on it like this.
Schwinn_B10_'36_Crank.jpg


Not to be a spoiler, but prewar serials don't seem to have the standardization or consistency that postwar do, so judging a prewar's build date by the serial number alone can be pretty iffy. The parts (like fenders, pedal crank) and overall presentation of the bike is a better indicator of the model and date.

(The chain guard in the photo above was 'borrowed' temporarily from another B10 that has entirely different parts and serial. Here's a closer pic of that chain guard).

Excelsior_B10_chain_guard.jpg
 

mazdaflyer

Finally riding a big boys bike
Feb 16, 2010
476
1,089
Mid-West
Thanks, they do look like brothers! The B10 Brothers, lol.

When I pulled the bottom bracket apart for cleaning, the crank had 'AS 36' stamped in it, which I took to be 1936. I believe the fork and top/bottom bracket parts are original to the frame, as they had 80+ years of crud binding them together and wrestled with me like a hungry alligator to take apart. The rest of the bike was missing when I got it, so parts like the chain guard, stem, and fenders were added. If you haven't looked at the crank, it might have a number date on it like this.
View attachment 956206

Not to be a spoiler, but prewar serials don't seem to have the standardization or consistency that postwar do, so judging a prewar's build date by the serial number alone can be pretty iffy. The parts (like fenders, pedal crank) and overall presentation of the bike is a better indicator of the model and date.

(The chain guard in the photo above was 'borrowed' temporarily from another B10 that has entirely different parts and serial. Here's a closer pic of that chain guard).

View attachment 956202
Your chainguard looks to be pretty much a match with mine and the chainring on your B10 bike. I haven’t done any work on the bike yet other than looking it over. I’m planning on saving it until it warms up towards late spring early summer.
So what’s the difference between a B9 and a B10? I saw B9 show up in another discussion, also B10E.


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REC

I live for the CABE
Dec 6, 2006
1,036
1,192
Lake Worth, United States
The "E" designation stands for Equipped - Tank, light, horn, crossbar handlebars, rack on the back.... or at least that is what I pick up in the catalog.
B9 and B10 are more basic models without the goodies.

REC
 
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mazdaflyer

Finally riding a big boys bike
Feb 16, 2010
476
1,089
Mid-West
The "E" designation stands for Equipped - Tank, light, horn, crossbar handlebars, rack on the back.... or at least that is what I pick up in the catalog.
B9 and B10 are more basic models without the goodies.

REC
Thanks! That seems to clarify the B10E for me. This is the first Schwinn bike I’ve had this old, so lots of learning to go for me.


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mazdaflyer

Finally riding a big boys bike
Feb 16, 2010
476
1,089
Mid-West
Interesting find as yours has serial number starting with F +five digits.
My B10 frame is similarly stamped but with F +four digits.
Serial No = F8816

View attachment 956187
View attachment 956188
Maybe mine was made 2033 bikes after yours was?
I have no idea how the serial numbers were sequenced though. Maybe more complicated than a simple progression.


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mazdaflyer

Finally riding a big boys bike
Feb 16, 2010
476
1,089
Mid-West
The "E" designation stands for Equipped - Tank, light, horn, crossbar handlebars, rack on the back.... or at least that is what I pick up in the catalog.
B9 and B10 are more basic models without the goodies.

REC
Schwinn newbie I am...after a little help here and some RRB help it’s becoming a little more clear.
In 1933 there were several models.

B10E Motorbike - 26” balloon tires, fully equipped, tank, rack, light, horn the works.
B9 Motorbike - 26” balloon tires, basic two bar bike.
B4 Camelback - 26” balloon tires, basic bike.
All three were 18” x 22” frames.
There were also 16” x 22” frame models.

I’m guessing these model continued for a few years.

REF: www.bikehistory.org for more Schwinn History information.



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GTs58

I'm the Wiz, and nobody beats me!
Sep 2, 2012
10,194
8,774
Central Arizona
Second post in this thread by Dave S.

If someone wants to add information for serial number prior to 1948, please post that here.

Please don't reply with discussion beyond that.. I want to keep this thread strictly related to serial number i.d..

Thanks,

DS
 

BillMetric

'Lil Knee Scuffer
May 14, 2018
24
63
50
Columbus, Ohio, USA
I figure this is another Noob question but I'm somewhat stumped on this one, this is either a pre fire '48# or they were using some really old parts to build S-4 Whizzers in 1952? and of course its on the BB ...

F4 WZ F99643.jpg

if this was a May '49 wouldn't it be "F099643" and if it was a December '52 the # wouldn't be on the BB correct? Its got OG ducktail rear fender, skiptooth New Departure hub, planes and trains headbadge etc. Unless the 1952 BB # stamp cutoff doesn't apply to Whizzer frames?

wz.jpg

I know its a J motor but it may have been updated if the frame turns out to be a '48?
 
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ZE52414

Riding a '38 Autocycle Deluxe
Dec 6, 2016
4,216
5,917
33
Peoria, United States
I figure this is another Noob question but I'm somewhat stumped on this one, this is either a pre fire '48# or they were using some really old parts to build S-4 Whizzers in 1952? and of course its on the BB ...

View attachment 1017262
if this was a May '49 wouldn't it be "F099643" and if it was a December '52 the # wouldn't be on the BB correct? Its got OG ducktail rear fender, skiptooth New Departure hub, planes and trains headbadge etc. Unless the 1952 BB # stamp cutoff doesn't apply to Whizzer frames?

View attachment 1017264
I know its a J motor but it may have been updated if the frame turns out to be a '48?
Not sure on the year but that is one beautiful whizzer! The patina is perfect! Great bike.
 

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