Thread:Starfleet Academy/@comment-4674838-20120915085226/@comment-76.109.62.95-20140128140604

4-8-8-4 "Big Boy" not a Mallet type. Mallets reuse steam from one set of drive cylinders transferred to a second set of larger cylinders (steam has cooled after first usage). Straight articulateds have independent delivery systems to both drive cylinder sets.

Highly informative wikia... am bookmarking. Most complete whyte notation types and names I've found yet. Good work all!