This was done to give better clearance for the chain. It's proper name is GTAW, or Gas Tungsten Arc Welding. If you have authentic paper documentation (sales receipt, warranty info, etc) then that helps. Astrodamus, July 2, 2009 in Riding, Research & Collecting. Why register? A feature of an early 1. Coster, Super- X, and  Moto- Trac frames. It was around feb/march 7. If the serial number of your Mongoose has a number such as 11994, with no letters in or near the number, it is likely a frame from 1975 or early 1976. The next number is the last number of the year the frame was produced. Also, sellers lie to make a sale.   You cannot paste images directly.

so the serial numbers would look like C17834. Note the flared shape of the 7. Depending on the year, however, it might be located on the brace behind the bottom bracket. It is our guess that it was done this way to allow clearance for the squarer shoulder on Ashtabula forks. It was around feb/march 77 that the extra single gusset was dropped from the frame. -->. Another feature of an early 1975 frame was the chainstay brace where it connected the seat tube. 5 coaster brake tab is also thicker and is comprised of two layers of steel welded together. After the company was sold to Service Cycle, it seems all frame production was moved to Tiawan. This guideline also applies to Team Mongoose, Supergoose, Jag, Blue Max, Roger De. The rest of the serial numbers are sequential and are the number of frames produced in that series. Can anyone help with serial number reading. This website uses cookies for analytics, personalization and advertising. C = March.

Create your own unique website with customizable templates. For example, a frame from 1975 will have the numbers like 11994. NB: There are a few anomailes to this, that do show up from time to time. After the letter designating the month of production, a number appears that stands for the year of production. For example, a frame from 1. As a general rule anything with a Gusset behind the head tube was manufactured in the USA. All USA made frames after they dropped the “C” were month, then year, then serial number. 1 = 1981 We have been told that when the company was sold the new owners only wanted complete boxed bikes and the rest of the stock of frames were destroyed. The Racer-X models serial numbers started with an X (example: XB8, rather than CB8) When the team mongoose model was introduced in '78, a "T" was placed in a third row at the bottom, as shown in this pic (you can barely make it out, but it's there) Later the "T" was moved to the top line, in front of the "C" for both Team Mongoose and Supergoose: A feature of an early 1.

Let’s look at some serial number examples below to get a better understand how the process worked. Note the flared shape of the 7. font-size: medium; USA made frames continued the standard USA numbering. A further feature was the headtube was offset to extend more to the bottom than it was to the top. Both frames looked the same but we need some way of determined the difference due to the frames being nickel plated or powder coated paint ,it was impossible to tell the difference in the material for warranty reasons.
Vintage mongoose: Serial #Interpreting the Serial numbers and featureson BMX Products, Inc. Frames.
All USA made frames after they dropped the “C” were month, then year, then serial number. Very early team frames had a "T" but without the flattened seat stay, but these are very few and were in 1977 mainly. The top of the range frames were USA made, (ie: Pro class, Rupe, Supergoose). Each frame had a combination of three key numbers or letters. B is the year (1992), H is the month (Aug) New-school Mongoose BMX bikes built through most of the 2000’s have a serial number that begins with 5 … In order to continue with your inquiry, you must agree to and accept these Terms and Conditions of Use. BMX Products Inc. (maker of Mongoose) used the same format for all of their bicycle brands (Jag, Roger DeCoster, Moto-Trac, etc..) with a few exceptions. Typically, the Serial Number was on two lines, looking like this: The first digit C stood for Chatsworth (California, where the factory started out).


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