Heavy mountain / Mohawk

[yankee flyer]

 Hi all
Just a small question. Is there any great differance between the 4-8-2 heavy mountain and a 4-8-2 Mohawk. I have a P2K Heavy mountain and was wondering if they were same basic size and etc.
Thank very much.

Lee

[tomikawaTT]

The USRA heavy 4-8-2 had 69" drivers, as did the Mohawk.  The spacing was somewhat longer under the Mohawk, so the USRA frame would result in a short model.

The big spotting difference was the boiler fittings - the Mohawk had the typical NYC 'saddlebag' steam turret.  Also, the L-3 and L-4 classes had Worthington SA feedwater heaters and front-end throttles, which resulted in a longer (and very different looking) smokebox.  The USRA original design called for mounting the compressor on the fireman's side (although this was not set in stone.)  The Mohawk had compressors on the pilot beam behind a sheet-metal shield.

The other thing that was obvious about the NYC engines was the use of truly humongous tenders.  The standard USRA tender would fit in the coal bunker of the tenders of the L-3 and L-4.

Chuck 

[daveklepper]

When, after WWII, some Mowhawks were assigned to the Boston and Albany, for mostly passenger, but some freight service, they were equipped with short tenders to fit the Beacon Park enginehouse turntable.  No Niagras ever operated on the B&A.