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I noticed the reference to my site here. I didn't realize I had any Potomac photos on it - you must be thinking of somepace else :-) Anyway, I have yet to find a 4-8-4 Northern in production that is similar to the WM J1. The main reason is the drive size and type. The Western Maryland Railway Historical Society (WMRHS - join it if you like the Wild Mary!) publishes a data book that covers all of the steam locomotives (they also have one for diesel and one for passenger cars) Here are some key dimensions on the J1 Potomac : Length over coupler pulling faces : 110' 2" Tender wheelbase (center of foremost wheel to center of aftmost wheel) 32'2" Engine Wheelbase : 19' 3" Height from railhead : 16' 2" Driver diameter : 69" Driver spacing (center to center) 77" HTH! Pete Brown www.irritatedVowel.com
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