Posted on August 23, 2019November 20, 2019 by Dale Phillips Gibson Banjo Information 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. Become A Member to Continue Reading This Article This article is part of our premium web content offered to Guild members. To view this and other web articles, join the Guild of American Luthiers. Members also receive 4 annual issues of American Lutherie and get discounts on products. For details, visit the membership page. If you are already a member, login for access or contact us to setup your account.