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| 1909-1912 #22 Stewart Speedometer Sprocket (on wheel - Brass) |
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| Stewart Speedometer Sprocket - History |
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| Assigned as Factory Number 3199, the wheel gear as used on
1909-1912 cars was a sheet metal stamped gear that was brass plated and had 6 holes in it to facilitate
3 screw or 4 screw mounting although Ford used 4 screws. Although the speedometer was optional until
February 1 of 1911, this gear was used as the standard wheel gear during 1909-1910 and was adopted
as standard equipment and remained unchanged until November 19, 1912 at which time it is believed
the part changed to the cast iron part. The wheel gear was mounted to the right front wheel during
all years and in 1909-1910 1/2" long spacers were used. They were 7/16" O.D. x 5/16 I.D.
The mounting screws were ##14 x 1 1/2" Round head Wood screws and it is believed that
these parts were brass plated. On February 3, 1911 the mounting spacers were changed to 3/4" length
and the screws were changed to ##14 x 1-3/4" Round Head Wood Screws. It is believed these parts were
still brass plated until June 12, 1913 at which time the spacers were black enameled and the wood screw
was changed to blued steel. Documentation on these plating changes is not fully available.
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