Mongoose Hoop D BMX Bike

On BMX Items, Inc. Frames

Determining the serial numbers regarding the very early Mongoose frames is truly simple and intuitive. Generally speaking the first Mongoose frames from 1975 and into very early 1976 had been completed with hand-stamped 5 digit figures beginning with 10000. Like, a frame from 1975 may have the figures like 11994.

An element of an early on 1975 frame is the braking system loss. The brake loss on these structures is rectangular fit. Time belated 1975 and onwards it became a single layer of metallic, much more oval and thinner in shape.

The early 75 coaster brake loss can also be thicker and is composed of two levels of metal welded together

Another feature of an earlier 1975 frame had been the chainstay brace where it linked the seat pipe. Note the flared model of the 75 frame vs the subsequent design (which carried on through all the later years of the frame design) as well as the extensive seat pipe.

An additional feature had been the headtube had been offset to increase even more on bottom than it had been into top. It really is our reckon that it absolutely was done in this manner allowing clearance the squarer neck on Ashtabula forks. This particular aspect transported over for the first couple of many years till the ashtabula forks were changed using more rounder design Tange made forks.

During the early 1976, the page C was put into denote the office location of Chatsworth, California therefore the serial numbers would look like C17834.

Another feature of an early on framework built-in 1975 - 1977 ended up being the extra single gusset above the bottom bracket.

In May 1976 the serial quantity procedure changed once again with the help of 30 days code. From here frames had been stamped aided by the page C for Chatsworth, a letter when it comes to month, and lots when it comes to 12 months of production. It was around feb/march 77 that additional solitary gusset was fallen from the framework.

Of course these are basic guidelines in determining Mongoose frames and you will find the anomalies to this procedure of serial number recognition.

The serial numbers had been hand-stamped on base bracket tubes then packed in (empty beer) containers waiting becoming welded to framework pipes.

The frame elements were stated in various phases as well as departments and some of components were fatigued faster than the others, it this process that result in a few of the frames “crossing over” to various years, especially throughout the end of the year.

RECO (Racer Engineering business) manufactured frames for BMX Products, Inc. for very first three years of manufacturing, after that the structures were made “in household” by BMX Products, Inc. RECO had been a-frame welding company that BMX items, Inc. accustomed make their early frames. BMX items Inc. during the early years moved in to the product across the street to RECO and in the end bought all of them completely.

So serial figures that went from May 1976 to March 1981 could have three digits in sequence overtop the serial amount of that frame. Let’s evaluate some serial number examples below getting a better know the way the method worked.

This guide additionally applies to Team Mongoose, Supergoose, Jag, Blue maximum, Roger DeCoster, Super-X, and Moto-Trac structures.

Each frame had a combination of three key numbers or letters. For instance:

CH8 123456

Once more, the C signifies Chatsworth [California] where the structures had been made. The next letter inside sequence could be the month rule.