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This is the EMD SD75 Series Physics Modification pack for the SD75M and SD75I.

In order to utilize this freeware physics upgrade, you must have purchased the "Train Simulator: BNSF SD75 Loco Add-On" pack available at Steam: https://store.steampowered.com/app/65259/

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, motor amperage limits, and traction and braking effort values for more realistic operation.

Also included is the signature JohnS brake fix and headlight fix.

General Parameter Change Log (same for both locomotive classes):
1. Adjusted locomotive weights slightly.
2. Adjusted tractive effort ratings and curves for individual locomotive models based on the specifications listed below.
3. Adjusted dynamic brake effort ratings and curves for individual locomotive models based on the specifications listed below.
4. Adjusted fuel consumption and prime mover RPM range.
5. Reduced amount of coupler stretch.

Specifications for individual models:
1. EMD SD75M (EMD 16-710G3C; 4300 GHP)
 a. Starting tractive effort of 175,000 lbs (778.44 kN) up to 8.687 mph.
 b. Traction horsepower at wheel is 4,050 hp (3,022.389 kW); efficiency rating of 90%.
 c. Max Dynamic Brake effort of 86,850 lbs (386.328 kN) from 22.4 mph to 9 mph; fade to 0 lbs @ 3 mph.
 d. Dynamic Brake horsepower at wheel is 4,556 hp (3,400 kW).
 e. Increased weight of 176.903 metric tons (390,000 lbs).
 f. Maximum speed of 70 mph.
 g. Fuel consumption @ notch 8 is 205 gallons per hour.
 h. Prime mover RPM range is 290 to 950.
 i. Ammeter range is -700 to 1785.

2. EMD SD75I (EMD 16-710G3C; 4300 GHP)
 a. Starting tractive effort of 175,000 lbs (778.44 kN) up to 8.687 mph.
 b. Traction horsepower at wheel is 4,050 hp (3,022.389 kW); efficiency rating of 90%.
 c. Max Dynamic Brake effort of 86,850 lbs (386.328 kN) from 22.4 mph to 9 mph; fade to 0 lbs @ 3 mph.
 d. Dynamic Brake horsepower at wheel is 4,556 hp (3,400 kW).
 e. Increased weight of 180.532 metric tons (398,000 lbs).
 f. Maximum speed of 70 mph.
 g. Fuel consumption @ notch 8 is 205 gallons per hour.
 h. Prime mover RPM range is 290 to 950.
 i. Ammeter range is -700 to 1785.

IMPORTANT; Install Instructions

1. Locate the RSC assets folder (C:\Program Files (x86)\Steam\SteamApps\common\RailWorks\Assets\RSC\SD75Pack01)
2. Open Railworks_EMD_SD75M_and_SD75I_Physics_Mod_Pack.rar
3. Drag the file folder from the .rar in step 2 into the directory you opened in step 1. Overwrite if asked.
4. The installation should be complete. Run TS2016 to check.

Thank you for downloading and installing.
Enjoy =)