2-6-6-2 Type Locomotives

The first Mallet was an 0-6-6-0. Around 1905 the Great Northern Railroad was interested in one but wanted a locomotive that was better suited to main line operation. Baldwin built five "0-6-6-0"s with leading and trailing two-wheel trucks. This configuration suited the GN's curving main line of the Cascades.

It wasn't until 1910 that 2-6-6-2s were built with their firebox behind the drivers and supported by the trailing truck which is normally why one would have a trailing truck. Subsequent 2-6-6-2s were built following this design.

The 2-6-6-2 was primarily a low-speed locomotive. This wheel arrangement was also commonly used on the logging railroads in the Western USA. However, the C&O (Chesapeake & Ohio) continued developing the 2-6-6-2. Their versions evolved into very large road locomotives. With their smokebox-mounted air pumps, they looked quite impressive. Fortunately, two of these class H-6 C&O locomotives survive today.

This wheel arrangement was also used by the Southern Pacific in their development of the Cab Forward locomotive. On the SP this wheel arrangement was called a "Mallet Mogul".


USA and Canadian Railroads that used 2-6-6-2 Type Locomotives

Mexican, Central American, and Caribbean Railroads that used 2-6-6-2 Type Locomotives

Surviving Examples of 2-6-6-2 Type Locomotives

No.ClassF.M. WhyteGaugeRailroad LineLocationStatusBuilder InformationNotes
122-6-6-24'-8½"SW Forest Ind Pioneer Historical Museum, 2340 N Ft Valley Rd (US 180), Flagstaff, AZdisplayBaldwin #60870, 1929
46 (110)2-6-6-24'-8½"CWR (Weyerhaeuser) Pacific Southwest Railway Museum, Campo, CAdisplayBaldwin #62064, 1937
42-6-6-2T4'-8½"Clover Valley Niles Canyon Railway, Sunol, CAoperationalBaldwin #57684, 03/1924Ran test runs in summer of 2012.
1309H-62-6-6-24'-8½"C&OWestern MD Scenic, Cumberland, MDrestorationBaldwin #74278, 1949Restoration From B&O Museum
382-6-6-24'-8½"Weyerhaeuser Modoc Northern Siding, Merrill, ORdismantledfrom fenced-in lot a mile from Great Western Railroad Museum, McCloud, CA, Fred Kepner collection
1102-6-6-2T4'-8½"Rayonier (Weyerhaeuser) Black Hills Central Railroad, Hill City, SDoperational
82-6-6-2T4'-8½"Rayonier Chehalis-Centralia Railroad, Chehalis, WArestorationBaldwin #58064, 1924 from Shelton, WA
11110t2-6-6-24'-8½"US Plywood Northwest Railway Museum, Snoqualmie, WAdisplayBaldwin #59701, 1926
1082-6-6-2T4'-8½"Weyerhaeuser Northwest Railway Museum, Snoqualmie, WAdisplayBaldwin #59087, 1926
62-6-6-24'-8½"Weyerhaeuser Northwest Railway Museum, Snoqualmie, WAdisplayBaldwin #60412, 1928
1308H-62-6-6-24'-8½"C&O C.P. Huntington RR Hist Soc, Huntington, WVdisplayBaldwin #74277, 1949 Placed on the National Register of Historical Places on Jan 31, 2003
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