Private (K.K) | |
Industry | Leisure products |
---|---|
Founded | 1890; 129 years ago |
Founder | Eisuke Miyata |
Headquarters | Kawasaki-ku, Kawasaki 210 - 0005 , |
Worldwide | |
Shinichiro Takaya (President) | |
Products | |
Owner | Morita Holdings Corporation (70%) Merida Bikes (30%) |
Website | Official website |
Footnotes / references [1][2] |
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Miyata is a Japanese manufacturer of bicycles, unicycles and fire extinguishers. The company has been in operation since 1890. Miyata was also one of the first producers of motorcycles in Japan under the name Asahi. The Asahi AA was the first mass-produced motorcycle in Japan.[3]
Miyata claims to have been the first Japanese manufacturer of flash-butt welded frame tubes (1946) and the first to use electrostatic painting (1950).[4]
- 4Bicycles
History[edit]
Miyata was founded by Eisuke Miyata (1840-1900), a bowyer and engineer from Tokyo who also made components for rickshaws. Eisuke's second son, Eitarō, apprenticed in a local munitions facility and later earned a degree in mechanical engineering from Kyoto University. In 1874, Eisuke moved the family to Shiba and in 1881 opened Miyata Manufacturing in Kyōbashi, Tokyo. The factory produced guns for the Imperial Japanese Army including the Murata rifle, and knives for the Navy. In 1889, a foreigner visited Miyata to ask the gunmakers to repair his bicycle. The engineers repaired the bicycle, and the company began to repair bicycles as a side business.[3]:31
Univega Serial Number Year Code For Free
In 1890, Miyata opened a new factory in Kikukawa, and the company was renamed Miyata Gun Works. Eitarō manufactured the first Miyata prototype bicycle in 1890, using rifle barrels produced at the factory. The early success of Miyata's bicycles was boosted by a request in 1892 from crown prince Yoshihito (later Emperor Taishō) to build him a bicycle. Nonetheless, Miyata halted production of bicycles to focus exclusively on arms manufacture during the First Sino-Japanese War of 1894-95.[3]:31–32
Japan changed its laws in 1900 to allow the import of foreign rifles, and the subsequent flooding of the market with cheap imports hurt Miyata's business badly. Upon Eisuke's death on 6 June, Eitarō converted the business entirely to bicycle manufacturing, producing bicycles under the Asahi and Pāson brands. Miyata's entire production of Asahi bicycles was purchased by the Imperial Army until the end of the Russo-Japanese War in 1905.[3]:31–32
Automobiles[edit]
Miyata began developing automobile technology in 1907. Miyata's first automobile, also named Asahi, debuted at the Kansai Prefectural Association Exhibition in 1910. The first Asahi automobile was a two-passenger car with an air-cooled, two-cylinder engine.[3]:33
Motorcycles[edit]
Motorcycles gained popularity in Japan in the early years of the 20th century as foreigners began bringing British and German machines to the country. The Japanese government officially allowed commercial import of foreign motorcycles beginning in 1909, creating a market for businesses selling imported machines, as well as domestic designs incorporating foreign components. Miyata produced the first all-Japanese motorcycle in 1913,[5]:9 also under the Asahi name, based on a British Triumph design.[6] However, at the time motor vehicles were a luxury item and imported motorcycles were seen as fashionable and desirable over locally made machines, and the Asahi sold fewer than 40 units before production was discontinued in 1916.[5]:9
Over the next two decades, Japanese manufacturers caught up to imported brands, and the rise of motorsports and motor clubs made motorcycles more accessible to the Japanese public.[5]:10 Miyata returned to motorcycle production with the Asahi AA in 1933. The AA was the first mass-produced Japanese motorcycle,[7] and was highly successful, leading to construction of a new plant at Kamata in 1938.[3]:55 However, after the Second Sino-Japanese War broke out in 1937 resources and materials for motorcycle construction became increasingly scarce, and in 1939 Miyata's Kamata plant was converted by the government to produce components for military aircraft.[3]:56 The AA sold an estimated 40,000 units from 1933-39.[7]
Miyata again resumed production of motorcycles after the Second World War. Through the 1950s the company released the HA and the Golden Beam FA/2, both with a 249cc four-stroke motor, as well as a model with a 344cc single-cylinder motor, and various two-cylinder two-stroke motors.[8][9] Miyata manufactured its last motorcycles in 1964.[citation needed]
Bicycles[edit]
Many say Miyata pioneered triple butting, and revolutionized frame building techniques. The first Miyatas were bolt-upright town bikes. Over the decades, Miyata established a good foothold in the bicycle market, becoming contracted by multiple local brands to build their bicycles and ultimately attracting Panasonic Corporation to become a shareholder in 1959.[10]
Panasonic Corporation, for a period the manufacturer of National and Panasonic brand bicycles, was Miyata's largest shareholder from 1959 until 2008, when it sold its remaining stake in Miyata.[11]
Miyata in the U.S.[edit]
Throughout the U.S. bike boom of the 1970s and into the 1980s, Miyata competed with American companies including Schwinn, Huffy, and Murray; European companies including Raleigh, Peugeot and Motobecane — as well as other nascent Japanese brands including Nishiki, Fuji, Bridgestone, Centurion, Lotus and Univega — whose bikes were manufactured by Miyata.[12] Japanese-manufactured bikes succeeded in the U.S. market until currency fluctuations in the late 1980s made them less competitive, leading companies to source bicycles from Taiwan.
Models[edit]
Late 1970s to mid-1980s Miyata bikes have high-quality Japanese lugged steel frames and Shimano or Suntour components.[13]
Miyata models carried numeric names (e.g., Miyata 710). By the late 1970s Miyata began using the same names, writing out the numeric names (e.g., Miyata Seven Ten).
Generally,[14] 90 and 100 series were sports/entry level bicycles. 200 and 600 series and the 1000 model were touring bicycles, with the level of bicycle increasing with first digit in the series. In general, a 200 series touring bicycle would be roughly equivalent to a 300 series competition/fitness bicycle in terms of component levels, frame materials and value. 300, 400, 500, 700, 900 series were mid-range competition/fitness bicycles — with the level of quality increasing with first digit in the series. The top line, pro series bicycles were named non-numerically (e.g., Team Miyata and Pro Miyata). 1000 series and X000 series bicycles, with the notable exception of the 1000 touring model, were competition/fitness models with non-ferrous frames.
Often (but not always) the last two digits of the model number indicated the number of available gears, e.g., 912 was a 9-series 12 speed and a 914 was a 9 series 14 speed.
Univega Serial Number Year Code Chart
- Miyata 9x: This was the bottom of the range, entry-level model. Triple butted tubing, Shimano/Suntour entry-level components.
- Miyata 1xx: Low-level model aimed at the casual consumer. Chromoly triple-butted main tubes, hi-ten stays, toe clips/straps, available in both men's and mixte styles.
- Miyata 2xx: A popular lower-end touring model. 1984 catalogue indicated the 210 used straight-gauge tubing, Dia-Compe cantilever brakes and Shimano triple drive train. By 1985, the 210 featured triple-butted chromoly tubing in the frame, with a Mangalight fork. 1986 and later models used 700 wheels; earlier models used 27' wheels. Braze-ons on front and rear dropouts (no low-rider braze-ons in front), cantis front and rear, horizontal rear dropouts, one bottle braze-on, rear rack braze-ons, and flat-top fork crown. There were also special models such as the 215ST (both traditional and mixte styles).
- Miyata 3xx: A mid-range road bike model from the 'Semi-Pro' group, with Shimano 105 brakes, derailleurs, and shifters. The 105 was also shown with an arrow-like graphic. The Miyata 310/312 had a shorter wheelbase than the touring models, but with clearance for fenders and wider tires and is sometimes called a 'sport-touring' model (a comfortable model for day rides and commuting).[15] Features included double- or triple-butted Cr-Mo tubing (depending on year), 525 Crown, SR CTD handlebars, and Araya rims. Earlier models had hi-tensile steel forks, but later forks were 'Mangalight' manganese alloy. Some years are equipped with an 'aero-style' shifters, mounted on a single brazed-on post on top of the down tube.
- Miyata 5xx Competition (part of the 'Semi-Pro' group): A higher-end road bike than the 310/312, with more 'aggressive' geometry.
- Miyata 6xx: A quality touring model, one step down from the 1000, with slightly different frame geometry and lower level components. Mid-1980s 610s have triple-butted splined Chromoly frame tubing, an unusually high quality tubing and construction for its price level. This bike is slightly lighter in weight than Trek 520/720 touring bikes, but of similar quality.
- Miyata 7xx: A mid- to high-end road bike from the 'Semi-Pro' group. Early models had Suntour parts, including an odd 3-wheel rear derailleur, possibly using the same frameset as the 910.
- Miyata 9xx: Miyata's high-end road bike from the 'Semi-Pro' group, with Shimano 600 components.
- Miyata 1000: Touring bike with splined, triple-butted Chromo tubing. Some report the 610 to be stiffer than the 1000. 1997 model had a mix of Shimano 600 and Deore XT parts (600 DT shifters, XT derailleurs). Noted bicycle authority Sheldon Brown called the Miyata 1000 'possibly the finest off-the-shelf touring bike available at the time'.[16] The 1000 was marketed in the U.S. from the late 1970s and marketed in North America until about 1993.
- Miyata 1400: A high-end road bike sold only as a 1989 model with Shimano 600 components. It was higher-end than the 914 that was sold in the same year. Unlike the aluminum 1400A, the 1400 used Miyata's CrMo triple-butted construction.
- Miyata Cross: A top-of-the-line 'cross' bikes (which included the Alumicross, Quickcross, Sportcross, and Triplecross). The Alumicross was introduced in the late 1980s with standard-size aluminum main tubes bonded to steel lugs and a Chromo fork. Seat and chain stays are steel, with the seat post binder bolt holding the seat stays to the seat post lug. The Quick, Sport, and Triplecross were triple-butted cromoly.
- Miyata Pro/Team/1200: These are the high-end race ready models (Team Miyata, Miyata Pro, etc.)
Serial numbers[edit]
Miyata's frames manufactured in Japan since 1972 have been stamped with a serial number, the first letter of which indicates the year of production.[17]
Letter code | Production year | Letter code | Production year |
---|---|---|---|
A | 1972 | N | 1985 |
B | 1973 | O | 1986 |
C | 1974 | P | 1987 |
D | 1975 | Q | 1988 |
E | 1976 | R | 1989 |
F | 1977 | S | 1990 |
G | 1978 | T | 1991 |
H | 1979 | U | 1992 |
I | 1980 | V | 1993 |
J | 1981 | W | 1994 |
K | 1982 | X | 1995 |
L | 1983 | Y | 1996 |
M | 1984 | Z | 1997 |
Today[edit]
The Miyata brand still exists and, while it is no longer distributed in the United States, it had until 2010 a joint venture with the Dutch Koga[18] brand,a Dutch bicycle manufacturer, established in Heerenveen Netherlands, under the name Koga-Miyata . Koga is nowadays part of the Accell Group.
In late 2011, Miyata announced plans to once again sell bicycles under its own Miyata Japon brand.[19] Its new frames were based on the Koga Miyata frame on which Peter Winnen won the Alpe d'Huez stage of the 1981 Tour de France.[20] Each custom-ordered frame was to be hand-built and made with Miyata's traditional chromoly steel process, featuring Campagnolo components, at its Chigasaki factory.[21]
Unicycles[edit]
Although demand for Miyata unicycles outside Japan has diminished in recent years due to a wider range of quality unicycles becoming available, Miyatas were once considered to be a highly desirable unicycle because of their quality of manufacturing and well designed saddle during times when choice was often limited to expensive custom-made unicycles or extremely poor quality products sold in department stores. Miyata unicycles are now uncommon among non-Japanese riders due to the surging popularity of riding styles such as Muni (Mountain Unicycling) and Street/Trials riding, which Miyatas are largely unsuitable for, however Miyata is still the unicycle of choice in Japan where riders tend to be more interested in Freestyle riding and Artistic Unicycling, this coupled with the fact that unicycling is taught in Japanese schools as part of physical education has secured Miyata a continuing place in today's unicycle market.
Miyata currently manufacture a range of unicycles with wheel sizes ranging from 14 to 24 inch, models are available for beginner and intermediate riders up to expensive high end cycles with carbon fibre frames. Miyata makes custom frames to order and also sells a five-foot Giraffe version of their popular Flamingo model.
See also[edit]
References[edit]
- ^'Company Profile'. Miyata Cycle. Retrieved February 7, 2019.
- ^'Company Overview'. Bloomberg L.P. Retrieved February 7, 2019.
- ^ abcdefgAlexander, Jeffrey W (2008). Japan's Motorcycle Wars: An Industry History. Vancouver, BC: UBC Press. ISBN978-0-7748-1453-9.
- ^1981 Miyata catalog (USA)
- ^ abcWalker, Mick (2002). Mick Walker's Japanese Grand Prix Racing Motorcycles. Redline Books. ISBN0-953-1311-8-1.
- ^Long, Brian (2007). Mazda MX-5 Miata: The Book of the World's Favourite Sportscar. Veloce Publishing. p. 38. ISBN978-1-84584-043-3.
- ^ ab'Asahi AA Motorcycle'. 240 Landmarks of Japanese Automotive Technology. Society of Automotive Engineers of Japan. Retrieved November 20, 2017.
- ^Hicks, Roger (2006). Die internationale Enzyklopädie (in German). Stuttgart: Motorbuch-Verlag. ISBN978-3-613-02660-5.
- ^Ewald, S (1999). Enzyklopädie des Motorrads (in German). Augsburg: Bechtermünz Verlag. ISBN3-8289-5364-6.
- ^日本自動車百年史 [100 years of Japanese History before Automobile] (in Japanese). Archived from the original on December 17, 2010.
- ^'Panasonic to Sell Stake in Bicycle Maker Miyata'. Japancorp.net. Archived from the original on April 5, 2012.
- ^RoadBike Review's Forum Archives
- ^'Miyata Info'. smasher.net. Archived from the original on May 26, 2009. Retrieved November 26, 2017.
- ^Miyata Hierarchy at bikeforums.net
- ^http://i12.photobucket.com/albums/a201/andy0325/DSCN0686.jpg
- ^Brown, Sheldon. Allen, John (ed.). 'Japanese Bicycles in the U.S. Market'. Retrieved November 26, 2017.
- ^http://vintagemiyatabicycles.blogspot.com/2010/07/miyata-bicycles-serial-numbers.html
- ^Koga
- ^'Miyata: Japanese road bicycle legend re-born'. cyclingiq.com. January 26, 2012.
- ^'68ème Tour de France 1981'. Memoire du cyclisme. Archived from the original on January 21, 2012.
- ^'日本の伝説のロードバイクが今、蘇る。本物が持つレトロ感「THE MIYATA」' [Japanese legendary road bike revived]. GQ Japan (in Japanese). January 24, 2012. Retrieved November 23, 2017.
External links[edit]
Wikimedia Commons has media related to Miyata. |
- Miyata Cycle official website(in English)
Trek Frame Serial Numbers
Prior to Late 1980 | Late 1980 to Late 1986 | Late 1986 to 1999+
Foreign Built After 82 | Jazz by Trek | Missing Serial Numbers
Serial Number Location
Trek frame serial numbers (SNs) are typically stamped into the bottom of the bottom bracket shell. In the case of some early 80s Treks, the number is under the plastic cable guide on the bottom of the shell. Just remove the plastic cable guide to see the number. The other place Trek (or their subcontractors) stamped the SN is at the lower end of the seat tube.
Note: The SN on your original sales receipt may not match the one on your bike. Sales persons sometimes had difficulty reading the numbers.
Many early Trek bottom bracket shells have a one or two letter code stamped separately from the serial number. This was made by the individual framebuilder to mark his/her work. On some bottom brackets there are two codes: one indicating the maker of the main triangle and the other for the maker of the rear triangle or perhaps the person who cut and shaped the tubing, if not done by the framebuilder. If you know which mark was used by a particular craftsman, please let me know.
Serialization Date
The dates coded in the serial numbers, or the dates inferred from the numbers, are dates on which the new frames were stamped with serial numbers (serialized). These dates are not necessarily the same as the model year of the frame. At some time late in each year (beginning generally September or October) the frames produced were created from designs, and painted with colors, for the next year.
Hard to read?
Old Bike Guide
Trek serial numbers can be hard to read. Clean the area well, and use lots of light at various angles. A suggestion by J. Hansen can help you read a serial number:
Serial Number highlighted with red wax. Click on image to see an enlarged version. (Photo by J. Hansen) |
'Rub the area with candle wax of a color that contrasts with your paint. Lightly wipe it off with a rag. The wax stays in the indented area of the S/N. Now you can easily read the number. I have included a photo of the results from my bike. In this case I used a red candle to make the serial number stand out. Note that even with the serial number filled with wax, the leading '0' is almost imperceptible.'
Serial Number Descriptions
The serial number descriptions are divided into five categories. Click on the link below to go to the appropriate category.
Prior to Late 1980 | Late 1980 to Late 1986 | Late 1986 to 1999+
Foreign Built After 84 | Jazz by Trek | Missing Serial Numbers
PRIOR TO LATE 1980
Before late 1980, Trek used an alphanumeric serial number scheme. Each seven-character number consists of three letters mixed with numerals. The serial number list and the code for the list are not available from Trek (but hope springs eternal). In the meantime, we have the results of the serial number decoding project:
Serial Number Decoding Project Nearly two hundred Trek owners submitted their frame's specifics to help decode Trek's first serial number system. Our thanks to these generous cyclists. Trek used this system from 1976 to late 1980. A variant of this first system was used in 81 and perhaps 82 for some frames. See **** year exceptions below. These serial numbers have seven characters, in the form L N L N L N N, where L is a letter and N is a number. Here are the results: The first letter is the model designation. The letter code indicates frame model, which would include bike models made from that model of frame.
The first number is the frame size, where
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 197X) and 0 for 1980. See note below,****, for year exceptions. Again, this is the date of serializing, not necessarily model year. The last three characters - The final letter ranges from A to Z and the final two numbers go from 01 to 99. The last letter might be a run designation, with the last two numerals the frame number in that run? Alternatively, the letter extends the range of the character from 0 to 9 (if a number) to 1 to 26. This gives a range of 2600 for the 3 characters. Any other ideas for these last three characters? The rest of the code defines time to a month. Perhaps once Trek was nearing more than 2600 bikes/frames of a given model per month, a new serial number scheme needed to be developed. Hence the change to the sequential system that was started in late 1980. Notes:
****Year Exceptions:
When a Trek frame was repainted by Trek, an additional set of numerals was often stamped into the bottom bracket to indicate the frame was repainted. These numbers were usually four digits, in the form NNNN. |
LATE 1980 TO LATE 1986
Late in 1980, Trek changed to a new numbering system for their frames built in the U.S. The frames were numbered sequentially, beginning with number 000001. The record of the assembly runs was documented in a handwritten journal. Trek (Kevin Tita) graciously provided a copy of the journal for this web site. The list ended in November of 1986 with number 279975. This serial number system actually extended through at least 1997 (see Table II below).
The journal includes run number, model number, frame size, and serial number range. Incidental information, including dates and comments on the frames, appears sporadically through the journal. A 'run' was for a particular frame size and frame model.
We all owe thanks to Luker White who generously donated his time to convert much of the paper list to digital form.
These data were mined to produce bike production by model for each calendar year. The results can be seen on the Trek Bike Production by Model, Late 1980 through 1986 page.
Click on the date link in Table I below to go to the detailed serial number information for that year.
Table I - 1980 to 1986
Beginning Serial Number |
Notes for Table I:
- Table I contains dates of frame serializing, and are not necessarily model year. At some time late in each year (generally September or October) frames were built for (then painted with colors for) the next model year. This journal information is summarized by year in Table I. The year designations in the table are approximate; not all of the runs are sequential in time. This may be a result of subcontracting some frame fabrication.
- For some years, the model number given may be the lowest number (or an X00 number) for a series of models that have the same frame. For example, a 1981 frame appearing on the list as a Model 610 could have been built into either a 613, 614, or 616 bike.
- Some of the Model 170 serial numbers are 6 digits but do not follow the numerical sequence. A future task is to sort 170 numbers. Some of these are presented in the 83, 84 link at the bottom of the table.
- Some early and mid 80s bottom brackets were marked with 58TSI or 60TSI. In the early 1980s Tim S. Isaac designed new lugs and a new bottom bracket shell for Trek. The new bottom bracket shell is typically marked with 58TSI (or more rarely, 60TSI). This designation is not part of the serial number but is a model number of the shell. The TSI are Tim's initials. The 58 or 60 refer to the angle between the seattube and the downtube.
- Some frames in this period have a leading 'A' before the 6 digit number. This may be more prevalent on lower level models. The 'A' may not be part of the SN. Just disregard it when looking up the number in the tables below.
- Frame Sizes in the SN list below are as given on the paper copy. For some entries, only a two-digit number was given, the extra 1/2 or 3/4 inch was dropped. So - an entry of 22 inches really means a 22.5' frame size, 19 means 19.75', 25 means 25.5'.
- The list has two major gaps, corresponding to missing pages. Page 9 ends with SN 027870 and the next page starts with 029118. Page 61 ends with 210065 and the next page starts with 215226.
- The SN list for 1986 has some serial number ranges with annotations about POs (purchase orders) to 'Merida'. These are for Model 800, 830 and 850 mountain bikes and Model 300 road bikes. These were made late in the year, so they probably were all 1987 models. At least some of these were provided to Trek as 'frames only'. One reported SN in these ranges, for an 850, was prefaced by the letters TML. From the serial number list, the number of Trek frames or bikes made by Merida late in 86 totaled at least 8251.
Merida is a Taiwanese bike company that was established in 1972. It is currently a major, worldwide player in the bicycle business. See http://www.merida.com/ for information on this company.LATE 1986 to 1999+
Univega Serial Number Year Chart Pdf
This 6 digit (7 digit beginning in 1993) code extended into at least 1999, at least for some models (generally mid to upper level and made in the US). The number may or may not have a leading zero, making the six digits into seven digits prior to 1993. The model is not available for these numbers but the year can be determined or estimated from Table II below. The information in the table is from serial numbers submitted by site visitors. Our thanks to them. In contrast to the serial number dates in Table I above, the years in Table II represent model years, not the date the serial number was applied.
Table II - Model Years 1987 to 1999
Serial Numbers Include |
270821, 284237, 284335, 293788, 301294, 304445, 304940, 307880, 308292 |
309634, 316981, 319336, 335133, 346451, 347944, 356837, 360384, 364072 |
369203, 379079, 391236, 406793, 427402, 438108, 455267 |
458184, 513747, 532881, 563678 |
579529, 629426, 653761, 669753, 740528, 79xxxx |
771408?, 811550, 819194, 840762, 873805, 883719, 900224 |
971670, 1027164, 1035688, 108?734, 1106529, 1109196, 1116394, 1125523, 1125738 |
1164917, 1269067, 1287883, 1306226 |
1331934, 1383671, 1406630, 1431480, 1439467, 1506862 |
1544446, 1649278, 1878372, 1955570 |
1876296?, 1963294, 2008374, 2063546 |
2090413, 2140321, 2172336, 2195013 |
2290083 |
FOREIGN-BUILT FRAMES AND BIKES AFTER 1982
Three different serial number forms have been submitted for 1983 Trek Model 400 frames. One, marked 'made in Japan', begin with JS followed by six numerals. The SN was located on the bottom of the bottom bracket. A second serial number is 81765. According to the Trek-provided SN list, this corresponds to a 22' (22.5') Model 400 frame made in 1983. This SN form is for frames/bikes made in the US The number was marked on the bottom of the bottom bracket. The third number is 403300950, which indicates foreign built, but the nation of origin sticker was missing. This number was marked at the bottom of the down tube. It is likely this 400 was made by the same manufacturer as the 1984 bikes described in the paragraph below. For the 1983 Model 400, it appears Trek used three sources for their frames or complete bikes.
Several 1984 Trek 460s, 420s and 400s have been reported with 9 digit numeric serial numbers stamped on the lower seat tube instead of on the bottom of the bottom bracket. These frames, or complete bikes, apparently were made in Japan by an outside contractor. The numbers submitted are in the range of 401000000 to 440000000.
An 8 or 9 character alphanumeric code was used for mid- and low-level frames subcontracted in Taiwan. Most of these bikes were labeled 'Made in Taiwan' (although the sticker often is easily removed). This form of serial number appears to have been used during the period 1987 to 93. The number leads with a T (for Trek?) then a numeral, one letter or two, then five (sometimes 4) numerals. Sean Hickey suggested the first numeral is the year of manufacture, and the letter is the month of the year (A - L). This is confirmed by serial numbers that were submitted by other Trek owners. If there are two letters after the year numeral, the first is the month. The second runs from A through at least Y. It might be a way of extending the 5 digit number series by a factor of 26.
A later 8 and then 9 character alphanumeric SN scheme, used beginning in about 1989, also begins with a T (for Trek?). These later T numbers were used on lower level subcontracted frames but do not follow the 2nd and 3rd or 3rd and 4th character date meanings above.
Beginning in about 1993 (model year 94), an 8 character alphanumeric code was used for some bikes. It begins with G and another letter (e.g. GN, GQ, GR, GS, GU, GV, GW, GY and GZ). These are followed either by: 6 numerals, or a numeral and a letter followed by four numerals. The first numeral in the SN may be the year of serialization.
JAZZ BY TREK
Jazz is a line of foreign-built, entry-level bicycles that Trek sold in the early 90s. (See the history page for a bit more info and the brochures page for a 93 catalog). There seems to be at least three serial number types:
- A Flipside model had the serial number JT0116 stamped on the bottom bracket shell. The JT probably stands for 'Jazz' and 'Trek'. The numbers may be the sequential frame number, beginning at 0001.
- The second type is a 10-character serial number. The first two characters are letters which are followed by eight numbers. Examples are JT09010099 and FI08003231.
- A Latitude model has a 10-digit, all-numeric serial number: 1230707859. This number also was stamped on the bottom of the bottom bracket shell.
Univega Serial Number Year Chart 2019
These three serial number forms may mean that Trek used at least three subcontractors for the Jazz line.
MISSING SERIAL NUMBERS
A few owners of early Treks, mostly, from 1976 through the early 80s, report their frames are not marked with serial numbers. A past Trek employee wrote that the police in the Madison and the surrounding area said TREK was famous for bikes with no serial numbers. Seems hundreds didn't get any numbers at all. The serial number guy just missed a few?
Three other possibilities: 1. In the early years Trek allowed, and even encouraged, their workers to use company equipment and materials to build personal frames after hours. These frames often were not serialized. The practice stopped after production was increased, resulting in little available down time for the equipment. 2. The serial number on a repainted frame that was not first stripped, may disappear under the new paint. 3. The number is under the plastic cable guide attached to the bottom of the bottom bracket shell.
Prior to Late 1980 | Late 1980 to Late 1986 | Late 1986 to 1999+
Foreign Built After 82 | Jazz by Trek | Missing Serial Numbers
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