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Pere Marquette #1225 - Berkshire Steam Locomotive

Built in 1941 by the Lima Locomotive Works company, the Pere Marquette 1225 served for about a decade. The locomotive hauled primarily freight during the second world war and beyond. Retired in 1951, the locomotive was later saved from the scrap in 1957 when it was acquired by the Michigan State University and used as a static display. Later in 1985, the #1225 was fully restored and returned to service for use in passenger excursions. The engine is now famous for its key role in the book and film "The Polar Express" as a primary inspiration.

- Nine powered axles
- Top speed of 70 MPH
- Realistic Control Systems
- Working Mechanical Stoker
- Brick Speed of 50 MPH

Refer to cab screenshots to locate invisible buttons and controls

This locomotive requires a larger workbench to spawn, such as the 30 Dollar Train Yard, NSO benches, or custom XML edited workbench spaces. The locomotive can otherwise be spawned with a custom mission.

- Flip the ingnition switch hidden behind the grey pipe under the firebox door
- Open the firebox door and manually add about 6 pieces of coal to the fire
- Wait for the steam pressure to begin to rise
- Once the steam pressure has hit 10 PSI, turn on the blower to assist the fire heating up
- Once the steam pressure has hit 90+ PSI, turn up the stoker throttle
- Turn on the main turret valve and all appliances besides the dynamos
- Turn on one or both dynamos if needed (generators for headlights)
- Flip the Cut-In and Lead/Trail switches on the brake stand
- Once the locomotive is moving, the blower may be turned off


Throttle and Reverser
- When the locomotive has reached at least 200 PSI and is ready to move, set the reverser to full forward/back
- slowly open the throttle, keeping an eye on the steam chest pressure. This is the amount of power being applied at the wheels
- As steam chest pressure rises, gradually open the throttle further, being careful to avoid wheel slipping
- If the wheels begin to slip, reduce the throttle to zero and wait for the steam chest pressure to drop before opening the throttle again
- Once the locomotive is up to speed, reduce the reverser towards the center to increase efficiency of the cylinders
- At any time, the steam chest pressure can be reduced faster through the use of the cylinder drain valve

Brakes and Wabsim Air Simulation
- The automatic brake is located on the left of the brake stand
- The automatic brake has 5 positions, release, lap, slow application, fast application and emergency
- When applying the brakes, set the lever back to LAP to steady the brake pressure
- Set the lever to RELEASE to decrease brake pressure
- The independent brake functions similarly to the automatic brake, but only applies to the locomotive
- The independent brake has 4 positions, release, lap, slow application and fast application
- The brake gauge cluster can be used to monitor the air levels in the brake system
- Left Red Hand: Brake Cylinder Pressure
- Left Black Hand: Brake Pipe Pressure
- Right Red Hand: Main Reservoir Pressure
- Right Black Hand: Equalizing Reservoir Pressure
- The Main Reservoir pressure is recharged via a steam pump which requires steam pressure to operate

Injectors and Water Glasses
- There are two injectors on the 1225, one which works slowly and another which can be used to make major adjustments to the water level in the boiler
- The turbine (slow) injector is located in the top left of the cab and does not need to be primed in any way
- The Main (fast) injector is located next to the engineer's seat and must be primed as follows:
-> Open the Injector Operation Valve
-> Open the Injector Overflow Valve for 3-4 seconds to prime the injector
-> Close the overflow valve and watch the water level as it increases
-> Close the Operation Valve when water level is corrected
- Sometimes the water glasses may become clogged and display an incorrect value
- To fix the water glass, open the blowdown valve below the glass for a few seconds
- Remember that more water = harder to boil, try to keep the water glass around the 3/4 mark during operation

Firing and Stoker
- This engine utilizes a mechanical stoker to keep the coal level in the firebox under control
- The faster the stoker runs, the hotter the fire will burn, adjust the stoker throttle on the left side of the cab as needed
- When the engine is stationary, it is recommended that you use the blower to keep a draft going inside the fire
- When the locomotive is moving, the smokestack creates and draft and the blower is no longer needed

Shutdown
- When you are done with the locomotive, turn the stoker throttle down all the way and flip the ignition switch off
- Turn off the turret and any appliances which may be left on
- Turn off the Cut-in the Lead/Trail switches on the brake stand
- Use the blowdown valves to drain any excess steam pressure from the boiler

This locomotive is complicated to operate and takes a lot of getting used to for one person, it is recommended that you play with a friend to reduce the workload while operating the locomotive.

Also Recommended:
- Play with medium physics detail or higher to prevent the drivers from locking up
-> Low physics detail is usually fine below 50 MPH
- Play with vehicle damage disabled to reduce the chance of random bumps in the track causing damage to the drivers
- Do not play with infinite electricity, as this messes up the dynamos and causes a lot of pivot noise with the drivers

Troubleshooting:
- If the drivers lock up, cycling the physics detail to low and back will usually fix this
- If the injector stops working, cycling it off and on again will usually help. We are working to fix this currently.

- JDRules for helping me get this project done on time
- Enzokatz for his incredible scenery work
- Silo for brake gauges

This is a great community filled with builders of different skill levels, if you have questions it is best to reach out to me through this server.
Link: https://discord.gg/TPCQAzjhaz

Please do not re-upload this vehicle or any part of it without permission