Figure 3d – AA Vehicle - Drum to Teacup Conversion
Based on current information, the drum to teacup production
conversion has a very gray time period for the AA vehicles. Based on
the following documentation, the production start date has a range of
anywhere between February 1929 to mid 1930.
The Ford Parts Price Lists shows that the commercial teacup tail
lamp is for 1930 and 1931 only. This would apply to both the A
commercial and AA.
The first engineering drawing for the commercial teacup lamp
assembly is dated 8-1-1929. The first engineering drawing for the AA
rear lamp wiring assembly used with the teacup style tail lamp is dated
7-10-1929.
The Judging Standards footnotes (page 18-2) indicate “commercial
vehicles could have either a drum or teacup style rear lamp from
February 1929 through March 1930”. The Judging Standards (page E-
3) indicates that the teacup tail lamp was introduced for the AA in mid
1930.
Based on my research, I believe that the drum style tail lamp was
used on the AA through 1929. And, that the teacup style tail lamp
started production on the AA in January of 1930.