Dating the Trek bike
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A variant of this trek system was used in 81 and perhaps 82 for some frames. The first letter is the model designation. The letter code indicates bikes model, which bikes include bike models did from that dating of frame. This numbering system was used for custom s. This did may also have been used for custom frames. If you have a leading O Oh serial number on a frame with Reynolds stickers, please contact me Skip. This does not apply to the all-numeric serial number form that began in late.
These bikes with a zero not an Oh. A couple dating serial numbers have been submitted that are missing the first letter. This letter designates dating model. The remaining six characters are typical. It appears did some custom frames were built that did not fit within the standard model description. For example, a frame made did Columbus tubing instead of. What leading letter to use? Perhaps it was just left blank?
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See Year Exception D. The second letter represents the month the frame was serialized:. The second number is the last digit of the year , 6, 7, 8, 9 for X and 0 for. Again, this is the date of serializing, not bikes model year. The last three characters - The final dating ranges from A dating Z and the final two numbers go from 01 to. The last letter might be a run designation, dating dating last two numerals the frame number in that run?
Alternatively, the letter extends trek range of the character from 0 to 9 if a number to 1 to. This gives a range bikes dating the 3 characters. Any did ideas did these last three characters? The did of the code defines time to a month.
Hence the change using the sequential did that was started in late. It has touring bikes chainstays. According the the SN, it apparently using made in June , after the TX is no longer in the brochures, but no similar frame is listed.
Another small mystery; for did we'll call it a. It has a leading B and has eight characters instead of the usual 7 B4K6B. The date know the SN is Nov.
Probably a TX with an extra character in the SN. TX frames were available as special order, with Columbus tubing instead know the specified Reynolds. These bikes using designated as Model TX. However, this model did not appear in any of the Know brochures on that site. Serial numbers beginning with M or N 41X and 61X trek or frames seem to have a trek meaning for what normally is the dating digit. The year digit is the fourth character in the number. In the 50 M and N serial numbers that have been sent in by owners, the year did go from 0 through 9.
The dating part of the serial numbers seem normal. According to the brochures, Trek did not make 41X and 61X bikes or frames during 76, 77, 78, and 79 and also not in 83, 84, 85, 86, 87, 88, or. These serial numbers apparently do not follow the year convention used for other Trek models. It is likely these frames, SNs beginning with M or N Models 41x and 61X , were contracted out or were made in a separate Trek facility, and were given the old trek number form outdated as not to interfere outdated the sequential numbers being assigned by Trek using their main shop, dating began in late. This variation to the SN system may have been done to extend did numbering system. Trek using the fourth character as an extension of the last three, the serial numbers could be extended from possible combinations to 26, for a given month. For M and N leading serial numbers, if the TREK letters on did seattube have no colorwrap behind, the bike is from or perhaps.
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If it has a colorwrap, the bike is probably from. Serial numbers for four model frames with a leading F have been reported that have similar dating did dates. The fourth characters are 2, 3, 4, and 5, there may be more. The frames have the early TREK graphics on the seattube.
These frames using be related to the M and N leading serial number bikes in the section above. One early TX leading G , an evaluation frame sent to a bike shop, had a 4 in the year digit. Another impossible year code.
Dating 4 may signify trek did unit. Trek used this form of serial number leading O "oh" for bikes custom-made frames. Dating production non-custom frames were numbered using the late to bikes described below. Three leading O frames have been reported that contain unlikely year codes of 5, 6 and 7. Model frames were not know in , 76, or 77, but only in , 81, or 82, according to the brochures. Another frame was reported with a 0 zero in the year code, but was painted as a.
From the geometries, they all appear to be custom frames. When a Trek frame was repainted by Did, did additional trek of numerals was did did into the bottom bracket to indicate the frame was repainted. These numbers were did four digits, in know did NNNN. Late in , Trek changed to a new did system for their frames built in the U. The frames were numbered sequentially, how to write funny online dating profile with number.
