Class F1 (Locobase 8390)

Data from AA-M&LS 1 - 1928 locomotive diagram book dated supplied in May 2005 by Allen Stanley from his extensive collection.

The Ann Arbor's heterogeneous collection of Ten-wheelers included two F1s (works #16405-16406), each of which had different numbers of tubes. 100 had the smaller amount - 218 tubes for a total of 1,801 sq ft of heating surface. Both had 14 sq ft of arch tubes contributing to the firebox heating surface.

The railroad held on their Ten-wheelers for decades. Ex-100 was scrapped in April 1951.

Class F2 (Locobase 8391)

Data from AA-M&LS 1 - 1928 locomotive diagram book dated supplied in May 2005 by Allen Stanley from his extensive collection.

Locobase 8390 shows smaller F1s from Baldwin in 1899. The other two Ten-wheelers delivered in 1899 had a larger grate, but a shorter boiler. 102 had 1,674 sq ft of heating surface consisting in part of 234 boiler tubes. 103 had 17 more tubes and 152 sq ft more in the boiler. But even the largest of the 1899 Ann Arbor 4-6-0s were relatively small when compared to the wide range of Ten-wheelers of the time.

Later renumbered 130-131, the F2s were scrapped in March 1933 and August 1940, respectively.

Class F3 (Locobase 7343)

Data fromAA-M&LS 1 - 1928 locomotive diagram book dated supplied in May 2005 by Allen Stanley from his extensive collection.

This pair of Ten-wheelers achieved an unusual distinction for the Ann Arbor - both engines had the same number of tubes and, as a result, the same heating surface. Never superheated, 103 (by that time renumbered 140) was scrapped in November 1928.

Class F4 (Locobase 8392)

Data from AA-M&LS 1 - 1928 locomotive diagram book dated supplied in May 2005 by Allen Stanley from his extensive collection.

Continuing the line of small Ten-wheelers supplied to the Ann Arbor by Baldwin beginning in 1899, this batch came in 1902-1903 with variations in tube count. For the record, the class had the following count and evaporative surface area:

Engine # Tubes EHS Renumbered Scrapped

106 235 1,932 November 1928

107 230 1,895 150

108 235 1,932 151 March 1951

109 268 2,180 152 March 1933

110 264 2,165 153 December 1948

111 233 1,932 154 February 1933

110 & 111 had 15 sq ft of arch tubes that increase firebox heating surface to 185 sq ft.