Web Site of ToyTrains1
4-6-4-4 Duplex Drive Steam Locomotive

4-6-4-4 Duplex Drive

The Pennsylvania Q1 4-6-4-4 duplex steam locomotive was a one-of-a-kind experiment, designed to try to create a duplex freight locomotive.  Note the opposed pistons, quite the exception with most duplex and mallet locomotives.

Last updated: 22 Jan 2020

All of the text contained within this page and all of the photographs and videos taken by ToyTrains1 are copyright (c) 2000 - 2020 by ToyTrains1, and may not be reproduced, in whole or in part, without the written consent of ToyTrains1.

If you wish to use any of my content, please see my detailed copyright statement for terms and conditions of use.