Gibson Banjo Information

by Tom Morgan

previously published as Data Sheet #28, 1976



Recent popularity of the banjo and a need for wider dessemination of various bits of information have prompted this writing. Much of the information is based only on opinions formed during approximately ten years of experience working on banjos, while the instruments themselves were made over a period of 60 or more years. It should then be remembered that many variations are likely to have occurred.

During the years banjos have been manufactured, one strong contrast is noticeable. During the time of its wide popularity around 1920–1930, the tenor banjo was the style. The people then playing 5-string often makes it desireable to convert these.

Gibson banjos used a designation of RB for regular banjo of 5-string, TB for tenor banjo, MB for mandolin banjo, and so forth. Therefore, reference to a model-00, for example, should be understood to represent the different possible models that were, or may have been made (MD-00, RB-00, etc.)

The shell or rims were made to be an interchangeable basis for either of the different types, and a mandolin banjo can be converted to a 5-string banjo by installing a different neck. Problems in fitting may be encountered due to several shapes of the heel, and two sizes of lag screw (8-32 and 10-32 threads) being used. Also, shell diameters vary from about six inches in some banjo ukes to a 24 inch banjo bass. The most popular sizes were 10 1/2 and 11 inches, with the 11" size the only one well suited for upgrading with one of the better MASTERTONE tone rings.