Stack Extenders for ATSF Steam Engines

Telescopic Stack

The telescopic stack had a stack which extended into the smokebox and which could slide up as needed. There were three different mechanisms used to raise and lower this style of extender.

A. A scissors type extension was seen on some, including the Blue Goose.

3460 Blue Goose, 3462

3464, 3463

Engines photographed with this style include:

3460, 61, 62, 63, 64, 65,

B. The next two are closely related. They have four jointed arms which push the stack upward. Type B seems shares a common mounting pin on top of the stack.

2909

Engines photographed with this extension include:

2901, 08, 09, 11, 28, 29

3762, 66, 75, 80

C. Type C is a variation of B above, but has separate upper mountings for each arm.

Drawing of 3751, Class 3761

2921

Engines photographed with this design include:

2901, 12, 17, 20, 23, 26, 27

3761, 62, 67, 68, 75, 78, 79, 80, 82, 83, 85, 88