I was bored and did some brake testing on a flat stretch of track for different German passenger trains and locos. After I measured the stopping distances (using full service application), I compared these to the real world values (either calculated from printed Bremsgewicht = brake mass or from posted stopping distances). I wanted to make a shorter more concise thread this time, but, alas, I failed. Skip to the table below and read the data if you don't want the explanations. For the calculated values I used the formula used by UIC to convert stopping distances from roll tests to Bremshundertstel = brake percentage. This formula is lambda = C/S - D, where S = stopping distance (brake distance + free run time due to application taking 4 sec) and the variables C and D taking different values depending on the maximum speed (up to 160 km/h) of the vehicles: 100 km/h: C = 52840, D = 10 120 km/h: C = 83634, D = 19 140 km/h: C = 119179, D = 19 160 km/h: C = 161280, D = 19 Below are my results: Vehicle Mass Brake mass BrH Stopping distance Error (Stopping distance) BR143 83t 95t 114/180* 630m/420m* 50% BR146 84t 126t 150/158* 955m/910m* 5% +6*Dosto 432t/390.5t* 648t 150/179* 955m/815m* 17% BR403 459/440* 770t 167/202* 860m/730m* 18% (*): Values with a star (*) are in game measured values. Since the Dostos and ICE3 weigh less than the real loaded wagons (they weigh slightly less than empty wagons even in loaded configuration) I calculated a BrH from the in-game masses (and stopping distances) and the real masses/brake masses. From the real BrH I generated an expected stopping distance and calculated the relative error. For the BR143 I lowered the pantograph before braking to disable the electric brakes and for the BR146 I simply held down the E-brake reduce button to avoid using it. It is not possible (afaik) to disable the BR403 E-brake in TSW2 but I think that the BrH is based on the R+E anyway. As you can see above, the BR143 behaves very unrealistically. To correct the Dostos one would need to both up the weight and decrease the brake force since they have higher brake forces than even the real one (which weigh more). For the BR403 I had some difficulty getting the real values. Using for example the printed brake masses on the wagons gives a BrH of 160 which would increase the stopping distance to 900m (and the realtive error to 23% while if I use the BrH of 154 from this page 8 of this document:ยจ https://docplayer.org/9254854-Gewer...6-mit-velaro-d-br-407-klaus-ulrich-roetz.html the stopping distance increases further to 930m (and the relative error to 27%). What I did instead was to increase the BrH from the document by a factor of (500/459) since I presumed that the BrH of 154 was a sort of minimum and real values would be higher when the train wasn't "overloaded" to 500t. All in all the stopping distance for BR403 is still too short by a factor of 1.2-1.3 compared to reality, either because DTG simply made a mistake or because they used the Eddy Current brakeforce for full-service (only air + electric braking).
