Pre 1937 Colson serial number project

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fordmike65

Riding a '37 Colson Imperial
Mar 4, 2012
19,746
East Los
I'd like to compile a list of Colson serial numbers and take a stab at cracking the code. I have a few written down with a description of the bike and a few pics, but would appreciate any info other Cabe members would care to share. If possible, please post the serial number and a pic of the bike. If a picture is not available, a description would be great. Sticking to pre-37 since that's the year Colson began stamping a two digit date code into the bottom bracket. Thanks for the help! Mike
 

fordmike65

Riding a '37 Colson Imperial
Mar 4, 2012
19,746
East Los
No pic, bit I jotted this info down a while back.

1936 Double bar. Blade forks
5684F
 
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SKPC

I live for the CABE
Feb 2, 2018
1,109
62
Utah - United States
I am "re-building" an old Colson Motobike. I found the bike without the badge, so I will never "know" what it was to begin with. I narrowed it down to a "Ranger" or a "Flyer" based on the frame/fork/wheels/seat that were on it. Incorrect crank, sprocket, rack, and possibly the stem. Most of the rest was there, including the Lobdel 26" balloon clincher wheelset.
Colson hourglass front hub and model D New Departure rear( no oiler). I am rebuilding these with correct DB spokes/nips. I "believe" it is Oct, 1933.....pete

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fordmike65

Riding a '37 Colson Imperial
Mar 4, 2012
19,746
East Los
Thanks for all the posts guys. I'm going to add these to the bikes/frames I have. I've decided to include '37 bikes as well in hopes that it helps us see a pattern in Colson serials. Keep them coming!
 

SKPC

I live for the CABE
Feb 2, 2018
1,109
62
Utah - United States
IMG_1021.JPG

I took some actual frame measurements on my 26-er Colson moto-bike frame. Serial #3J6333 -possibly a oct/1933 frame.
The 28" wheel bikes share the same frame measurements but with 1/2" Longer chainstays, and 3/4" Longer fork measurement.
Thanks @Phattiremike for providing his 28-er measurements below...
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Freqman1

Riding a '37 Dayton Super Streamline
Jul 14, 2009
17,916
Evans, GA
Not that there is a large sample yet but from what I'm seeing '36 looks like they went to a different serial system. Looks like pre-'36 may have been a year month numbering system. Need about 25 more bikes and we could probably figure it out. V/r Shawn
 

fordmike65

Riding a '37 Colson Imperial
Mar 4, 2012
19,746
East Los
Seems like the earlier bikes may be following this pattern. Doesn't seem like the 36's are tho. Hmmm.....
 
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