1. The leading and trailing wheels were fitted with roller bearings. 2. Delta trucks were soon enlarged to carry four trailing wheels , and later six. 3. The trailing wheels also proved to be troublesome. 4. Churchward resulting locomotive designs excluded trailing wheels , which maximised adhesion on the South Devon Banks. 5. In the Whyte notation, trailing wheels are designated by the last numbers in the series. 6. The wheel arrangement's disadvantages included the firebox size restriction caused by the lack of trailing wheel . 7. Trailing wheels first appeared on American locomotives between 1890 and 1895, but their axle worked in rigid pedestals.8. The frame is a single tube following the circumference of the front wheel, then diverting to a trailing wheel . 9. The 4-6-2 designation means it has 4 leading wheels, 6 driving wheels, and 2 trailing wheels . 10. The drive was on the trailing wheels and the slide bars were attached to a motion bracket just behind the leading wheels.
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