Both these locos have similar controls but behave different. I don't know it is prototypical or not. I just have a few questions and comments. Conditions: 1. Speed selector | OFF | ON | designated speed 2. Force selector | 0 - max 3. Auxiliary control | increase | decrease Assumptions, observations: 1. Speed selector in ON position: a) in 112 it behaves as a dynamic brake in this position, with a force selector acting like a potentiometer b) in 143? Questions: What the Speed selector ON position is for and how should it work? (1a vs 1b) Is the automatic brake blended air & dynamic or it depends on Speed selector position / other conditions eg Force selector position? Etc. For me, BR 143 it's predictable (and wonderful!), unlike BR 112, but maybe these differences are justified. I'd like to satisfy my curiosity. I am not criticizing or suggesting anything PS I started to wonder because I got 112* on BRD Journey (instead of 143) and felt the BIG difference. * TSW swaps locomotives sometimes - clearly this is unintentional (Journey)
Not sure if I missed any questions you asked but: The force selector should not have an impact on blended brake behavior, it only affects the dynamic brake effort when the E-brake is used with the AFB. 50% corresponds to maximum dynamic brake effort (140 kN where speed allows). I can't remember what the 0% corresponds to but iirc it doesn't completely cut out the E-brake. Moving the AFB lever to "On" will brake the locomotive with E-brake down to around 5 km/h. Train brake always blends in air, unless the "Bremse Überbrucken" has been pushed within 6 seconds of making the application.
My question concerns the differences between 112 and 143. In the game, both locomotives behave differently in mentioned aspects
Well, the BR112 will behave very similarly to the BR143 (as described above). There are certain differences but they are mostly in terms of performance. The BR143 has higher starting tractive effort (240 kN) compared to the BR112 (226 kN) due to different gearing to be able to travel at higher speed. They have different traction and electric brake powers as well (BR143 has 2020 kW brake power, can't remember the number for the BR112 but it is slightly higher). So to summarize: the stuff I described above is how I understand both locomotives to behave IRL.
Note, afaik only the BR143, DB BR146, MRCE BR185, BR363, VVO Dostos (and a few other things that run on DRA) were updated specifically for DRA release. The other rolling stock may have been updated as part of a preserved collection update during the summer (I don't know) but if you expect the BR112 etc to act like the BR143 you will be disappointed.
