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Bowser - HO - Steam Loco Kits
PRR T1 Duplex 4-4-4-4

History:  Locomotives of the 4-4-4-4 type represented advanced mechanical engineering concepts of the very popular 4-8-4. Both wheel arrangements were similar, but testing showed that doubling up on cylinders and machinery produced great benefits to railway travel. This new development was to be dubbed "duplex".

Duplexes had lighter machinery, had a shorter cylinder stroke, utilized less wear and tear on the parts, had a lower piston thrust, had smaller cylinders, and had a rigid frame.

The first two T1 engines, which were experimental, were the 6110 and 6111 in the year 1942. The 6111 got a Franklin booster in its trailing truck, and with this addition was now able to carry up to 13,500 pounds. The total length of the engine along with the tender was 122 feet.

In 1945, the Pennsylvania Railroad placed an order for fifty engines. Altoona built the numbers 5500-5524 and Baldwin built 5525-5549. Then things started going wrong for the T1. Cost for poppet valve maintenance rose sharply, contour rotary cams were tried out, the economy was in a poor state after World War II, and some locomotives were fitted with Walschaert valve gear to become class T1a. By the mid-1950's, the T1's were all but obsolete.

Another problem that the T1 faced was being slippery on the rails due to weight transfer from front to back of the train. Plans were designed to make the train adhere more to the rails, but no feasible solution was ever found to save the T1. The T1 was popular in its day because it was an unusual engine; however its career was to be short-lived. Unfortunately, none of the T1's were ever saved.

The new T-1 Kit Includes:  A new die cast boiler, tender body and cylinders along with over 35 brass "Super Detail" parts.  In addition, the boiler & tender body have been pre-drilled to enable installation of all of the "Super Detail" parts.  No soldering is required.  All supderdetail parts may be glued to the zinc casting using your favorite glue (ACC, Goo, Ambroid, 2 part epoxy, etc.).

Part #DescriptionPrice
1-101000  T-1 Duplex New Edition Kit with Super Detail Kit * n.a.

Kit Components and Replacement Parts:  The following parts are listed in order to identify parts in your kit or to replace parts that have been lost, damaged or simply worn out.  This is not a complete list of all of the individual parts available for this model - please call Bowser with your specific requirements if you cannot find the parts you need.  You may also use our on-line catalog to find parts by description.  Please note that part numbers with a price of "Call Us" may be part of an assembly and may not be available as a separate purchase item.

Part #DescriptionPrice
1-8001  T-1 DECAL (included in T-1 Kit) * n.a.
1-40008  T-1 Tender Casting and Parts Kit (Included in T-1 Kit) * n.a.
1-101001  T-1 Side Rod Kit (included in T-1 Kit) * n.a.
1-101002  Boiler, Frame, Drivers, Tender, Trucks (included in T-1 Kit) * n.a.
1-101003  Miscellaneous Kit, T-1, K10003 (included in T-1 Kit) * n.a.
1-101004  Lead Truck Kit, T-1, K10004 (included in T-1 Kit) * n.a.
1-101005  Valve Gear Kit, T-1, K10005 (included in T-1 Kit) * n.a.
1-101006  Casting Kit #1 for T-1 (included in T-1 Kit) * n.a.
1-101007  Trailing Truck Kit, T-1 (included in T-1 Kit), K10007 * n.a.
1-101008   Frame, Drivers, Cylinders, T-1, K10008 (included in T-1 Kit) * n.a.
1-101009   Casting Kit #2 for T-1 (included in T-1 Kit) * n.a.
1-101011   Back Plate T-1 (included in T-1 Kit) * n.a.
1-101012   Engineer & Fireman with Backplate T-1 * n.a.
1-101014   T-7 Parts for T-1 Kit Only (included in T-1 Kit) * n.a.
1-101018   T-1 Boiler Kit for Old Lead T-1 Body * n.a.
1-101019   T-1 Mechanism Kit (included in T-1 Kit) * n.a.
1-101020  T-1 Instructions (included in T-1 Kit) [also a 1.2Mb PDF] * n.a.
1-101025   T-1 Super Detail Kit (included in T-1 Kit) * n.a.

  Cylinders 19-3/4" x 26"
  Steam pressure 300 lbs.
  Tractive force 64,650 lbs.
  Weight of engine 502,200 lbs.
  Wheel base 51' 11"
  Color: Brunswick Green.
  Length with Tender 17"
  Height 2-1/4"
  Minimum radius 22"
  Power Two Bowser DC-71
  Drivers 80" Box Pok

Brunswick Green Locomotive w/Brass Super Detail Kit Installed
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Photo 13

Brunswick Green Tender w/Brass Super Detail Kit Installed
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Photo 7

Super Detailed Locomotive and Tender Built and Painted by Tony Wasilewski
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