This model is a Corliss Terminal Railroad repaint of Allen Norton and Michael Stephan’s freeware Alco HH-660 Series Switcher by Harry R. Adkins. It was created to use with the Corliss Terminal route under development by Thomas J. Pearce.   

Unzip and install using the included RW_AssetSetup.exe installer.  This model is installed into:  Assets\GreatNortherner\HH660\RailVehicles\Diesel\ Nortec_HH660\CT_62.  In the scenario editor it is listed as: Alco HH660 CT_62. 

You can download the base model here: 
http://www.railworksamerica.com/index.php/download-library/engine-repaints?view=document&;id=1254:green-bay-western-alco-hh-1000-switcher&catid=18:engine-repaints

Harry R. Adkins
February 2015

ALCO HH-Series Switcher Engine
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A Freeware Model by Allen Norton and Michael Stephan. Converted from an MSTS model by Allen Norton.

CREDITS

Allen Norton: creating the model and base textures.
Michael Stephan: converting the model for Railworks, repaints.

Data gathered primarily from the following sources:
http://www.thedieselshop.us/
http://en.wikipedia.org/wiki/ALCO_HH_series
http://gelwood.railfan.net/

Physics data used from the above sources and from MSTS eng files of Bob Boudoin and Bill Prieger.

Beta testers:  Stuart Baxter, Thomas Pearce, Rick Grout

Installation
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Use the Railworks Package Manager to install the .rwp file included in the downloaded zip archive.  To place the engines in the scenario editor, you must enable the entries for provider: "GreatNortherner" and product: "HH660" in the assets filter.  Then you can place the engines on your route, add a driver icon, and run them!

Some words about running the model
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The models provided here are not entirely done yet. Most importantly, they are missing a properly modeled cabview! This will be provided as a later update, as soon as I have learnt how to build one.

Furthermore, I cannot guarantee that the models' physics are really accurate. I tried my best and I have had some positive feedback regarding the running of the engines, but if you do notice some irregularities or unprototypical behaviour when running the engines, please let me know.

For the train brakes on these engines I chose a non-self-lapping design. (Please let me know if this is not correct.) This means, that in order to do a brake application, you first move the brake handle to an x% apply position - the higher the number the faster the application, 100% is emergency. When you have reached the desired amount of braking force (pressure drop in the brake pipe, see the F5 HUD), pull the brake handle back to the LAPPED position. To release the brakes, move the handle back to release.
You will also notice that due to the new physics data I used, the brakes will apply and release quite a bit slower than on the default engines.

All engines come with prototypical dynamic roster numbers. Although it needs to be said that none of the railroads that bought ALCO HHs had many of these engines, except for the NH who bought about 20 of them.

An interesting note for realistic operation: these engines were not equipped with multiple-unit capabilities. The HHs were quite slow (HH600/660: 45 mph, HH900/1000: 60 mph) and not too powerful engines, so they were hardly ever used anywhere else but in yards and on slow branchlines.

These models are aliased to the UK Class 37's sounds, I think it is the closest to the ALCO rumble that we currently have in RW (and besides, the 37 sounds just wonderful) The exhaust comes from the RW F7, only darkened quite a bit and a bit larger.

Disclaimer
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1) These models are provided on an as-is basis. Although unlikely to happen at all, I shall not be held responsible for any damage any part of this archive might do to your system.

2) These models are provided as freeware.

3) You may not redistribute this archive or contents of it, in modified or unmodified form, without prior permission of the original publisher, Michael Stephan.

Michael Stephan
May 11, 2010
elvastower & trainsim.com & railworksamerica: GreatNortherner