This is the EMD SD70 Series Physics Modification pack for the SD70MAC, SD70ACe, and SD70M-2.

In order to utilize this freeware physics upgrade, you must have purchased the "SD70 V2 Volume 2 Loco Add-On" pack available at Steam: http://store.steampowered.com/app/208365/

This is a freeware pack; in no way is it to be used for commercial purposes. You are free, however to further modify the physics enhancements found in this pack for personal use if you so choose.

THIS IS NOT A SOUND UPGRADE PACK. Physics adjustments made around the existing sounds.

The purpose of this pack is to adjust the locomotive weight, fuel capacity, motor amperage limits, and traction and braking effort values for more realistic operation.

The pack purchased from Steam includes the BNSF SD70MAC, BNSF SD70ACe, Canadian National SD70M-2, and Norfolk Southern SD70M-2. Originally, all locomotives in this pack shared a single set of operating physics, making them operationally identical in the game. However, we know that these locomotive models differ greatly in real life. This mod pack differentiates those locomotives in the game.

General Parameter Change Log (same for all three locomotive classes):
1. Set fuel tank capacity to 4,900 gallons.
2. Changed HUD ammeter function so that it displays tractive/braking effort in thousands of pounds. This means that if the HUD ammeter reads "157 Amps", the locomotive is putting out 157,000 lbs of tractive effort. Conversely, if the HUD ammeter reads "-34.52 Amps", the locomotive is putting out 34,520 lbs of dynamic braking effort.
3. Adjusted tractive effort ratings and curves for individual locomotive models based on the specifications listed below.
4. Adjusted dynamic brake effort ratings and curves for individual locomotive models based on the specifications listed below.

Specific horsepower and tractive effort ratings used in calculation for individual locomotive models:
1. EMD SD70MAC (EMD 16-710G3B; 4000 THP)
 a. Starting tractive effort of 175,500 lbs (780.663 kN) up to 7.165 mph.
 b. Traction horsepower at wheel is 3,350 hp (2,500 kW).
 c. Max Dynamic Brake effort of 81,000 lbs (360.3 kN) from 23.845 mph to 3 mph; linear fade from that speed to 0 lbs @ 1 mph.
 d. Dynamic Brake horsepower at wheel is 5,145.6 hp (3,840 kW).
 e. Increased weight of 188.3 metric tons (415,126.18 lbs).
 f. Maximum speed of 70 mph.
 g. Fuel consumption @ notch 8 is 191 gallons per hour.

2. EMD SD70ACe (EMD 16-710G3C-T2; 4300 THP)
 a. Starting tractive effort of 189,000 lbs (840.714 kN) up to 7.646 mph.
 b. Traction horsepower at wheel is 3,850 hp (2,873 kW).
 c. Max Dynamic Brake effort of 105,000 lbs (467.063 kN) from 18.395 mph to 3 mph; linear fade from that speed to 0 lbs @ 1 mph.
 d. Dynamic Brake horsepower at wheel is 5,145.6 hp (3,840 kW).
 e. Increased weight of 191 metric tons (421,078.6 lbs).
 f. Maximum speed of 75 mph.
 g. Fuel consumption @ notch 8 is 187 gallons per hour.

3. EMD SD70M-2 (EMD 16-710G3C-T2; 4300 THP)
 a. Starting tractive effort of 163,000 lbs (7725.06 kN) up to 8.486 mph.
 b. Traction horsepower at wheel is 3,685 hp (2,750 kW).
 c. Max Dynamic Brake effort of 86,850 lbs (386.328 kN) from 22.4 mph to 9 mph; extended range sawtooth function between those speeds; linear fade from max brake effort @ 9 mph to 0 lbs @ 3 mph.
 d. Dynamic Brake horsepower at wheel is 4,556 hp (3,400 kW).
 e. Increased weight of 177 metric tons (390,214.2 lbs).
 f. Maximum speed of 75 mph.
 g. Fuel consumption @ notch 8 is 187 gallons per hour.

IMPORTANT; Install Instructions

1. Locate the RSC assets folder (C:\Program Files (x86)\Steam\SteamApps\common\RailWorks\Assets\RSC)
2. Open Railworks_EMD_SD70MAC_SD70ACe_&_SD70M-2_Physics_Mod_Pack.rar
2a. Before proceeding to step 3, make sure your "RSC" folder is NOT set to "read only". You can change the folder settings using the properties function. IF the "RSC" folder is read only, the files will not overwrite existing files when you attempt step 3.
3. Drag both file folders ("SD70Pack02" and "SD70Pack03") from the .rar in step 2 into the directory you opened in step 1. Overwrite if asked.
4. The installation should be complete. Run TS2015 to check.

Thank you for downloading and installing.
Enjoy =)