DB BR 23 in Train Sim World 7
TSG's German steam locomotive for Neckartalbahn: improved firebox simulation and new audio recordings.
The BR 23 in Train Sim World 7
The BR 23 (Bayernclass 23) is a German steam locomotive that TSG (Tactical Simulation Games) is bringing to Train Sim World 7 as part of the Neckartalbahn: Heidelberg – Neckarelz add-on. The BR 23 was a passenger steam locomotive operated by the Deutsche Bundesbahn, primarily on regional passenger services in Bavaria and surrounding regions.
TSG has been working on significant technical improvements to the BR 23’s simulation based on community feedback about previous steam content in Train Sim World.
Technical background
The BR 23 class was a 2-8-2 wheel arrangement (Mikado configuration) locomotive designed for passenger service. Key characteristics include:
- Wheel arrangement: 2-8-2 (Mikado)
- Power class: Approximately 2,300 hp in its original form
- Maximum speed: 100 km/h (62 mph)
- Era: Primarily 1950s-1960s operations on DB
- Region: Bavaria and southern Germany
The locomotive represents a specific era of German steam railway operations and is well-suited to the Neckartalbahn’s 1974 setting in the Neckar valley.
TSG’s technical improvements
TSG has addressed specific player feedback about steam simulation in Train Sim World. The changes to the BR 23 include:
Modified firebox Simugraph node: TSG created a modified firebox simulation to address complaints about previous steam content. The firebox mode in earlier TSG releases generated too much steam at lower boiler outputs, and it took hours for the fire to heat up or cool down with no way for the player to “shut it down.” The new implementation aims to:
- Provide more realistic steam generation at lower boiler outputs
- Allow the player to manage fire intensity more practically
- Give better control over the steam generation process
Sound recordings at Darmstadt Museum: TSG has started recording new audio at the Darmstadt Railway Museum. This means the BR 23 will feature authentic sounds based on real preserved examples rather than simulated audio.
These changes represent TSG’s response to years of player feedback about steam simulation quality. The developer has been transparent about seeking additional feedback and is open to further changes as the project develops.
The Neckartalbahn setting
The BR 23 operates on the Neckartalbahn: Heidelberg – Neckarelz route, set in 1974. The route features 53 kilometres of double-track mainline through the Neckar valley, giving the BR 23 significant running room.
The 1974 setting means the BR 23 operates alongside the route’s electric services, giving players the option to drive either the modern electric traction or the heritage steam locomotive on the same timetable. This dual-era operation adds variety not found on all routes.
Steam in Train Sim World 7
The BR 23 is one of several steam locomotives coming to Train Sim World 7 through the partner programme:
- BR 23 (TSG) — German passenger steam for Neckartalbahn
- The Southern Pacific routes bring US steam era content
- Other heritage routes may feature steam at various points
For players who have been requesting better steam simulation, TSG’s technical improvements to the BR 23 represent a significant development. The changes address the most common complaints about previous steam content.
Release status
The BR 23 has no confirmed release date separate from the Neckartalbahn add-on. Both are listed as in development on the August 2026 roadmap. Follow the roadmap for updates.
Related pages
- Trains Hub — explore the full locomotive roster
- Neckartalbahn — the route the BR 23 will operate on
- Standard Locomotives — launch-day traction
- Deluxe Locomotives — ICE 4 and other premium locomotives
Frequently Asked Questions
Quick answers to the most common questions.
When does the BR 23 come out?
No separate release date has been confirmed. It is part of the Neckartalbahn add-on from TSG, listed as in development on the August 2026 roadmap.
What improvements has TSG made to steam simulation?
TSG created a modified firebox Simugraph node to address issues with steam generation at low boiler outputs and fire control. They also recorded new audio at the Darmstadt Railway Museum.
What era is the BR 23 from?
The BR 23 operated primarily from the 1950s to 1960s on the Deutsche Bundesbahn. The Neckartalbahn setting is 1974.
What route will the BR 23 operate on?
The Neckartalbahn: Heidelberg – Neckarelz route, running alongside electric services in 1974.