by RayL » 28 Nov 2014, 10:46
Jim Burns' reason for using the smaller jack plug may not have been due to availability - after all, every other guitar and all guitar amps at that time used quarter-inch so it was not uncommon.
The reason may have been, as Cockroach points out, that a quarter-inch jack would mean routing perilously close to the back of the guitar body. Measuring my early Artist, the body is only 1 3/8" thick. The stem of a standard jack plug is 1 1/4" long. Jim Burns may have been 'playing safe' to avoid scrapping perfectly good guitar bodies because of a slightly mis-set router. By comparison, a modern Burns guitar is 1 7/8" thick (and a Stratocaster is similar).
That brings up another thought. Was there a standard thickness for an old-fashioned mahogany pub counter? Paul D. has mentioned to me in the past that Jim would make guitar bodies from reclaimed pub counters.
Could someone with, say, a 1961 or 1962 Vibra Artiste (with standard jack socket from new) , measure the thickness of the body? Is it thicker than the 1 3/8" of my early Artist?