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TS2015 HD: Union Pacific 844; Does the Diesel MU Control Stand in the Cab Actually Work as Intended?

2,665 views · Published 10 November 2014 · 13:50 · Indexed 10 November 2026

Channel: Fan Railer · 2014 · Gaming

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The short answer is no. However, there is a good explanation for this phenomenon: the core game code does not allow for direct separate control of a diesel locomotive from a steam locomotive. The designer of the TS2015 UP 844 puts it this way:

"The m.u. connection is an aural and visual illusion. The core code doesn't allow proper multiple unit working between steam and diesel. When you've got the steam locomotive selected, the diesel will always obey the regulator and reverser settings of the steamer (and vice versa) - there's no way around that (maybe they'll do this better in TS2). So to give the impression (remember that everything in a simulator is all about creating a believable illusion) that you are operating the diesel, the m.u. controller in the FEF-3 does actually cause the diesel's throttle and reverser controls to match those selected on the m.u. controller (as long as you've switched on the Gen Fld) and (this is the aural illusion) changes the sound coming from the diesel to match the selected notch. However, until you switch cab views and go into the diesel (at which time you'll see that the notch and direction have been changed), the diesel physics will obey the "regulator" and "reverser" values of the steamer, regardless of the m.u. controller. Since the regulator of the FEF-3 can be at 100% a lot of the time, while you control the cut-off, it would mean that the diesel would be in notch 8 a lot of the time. That caused a lot of problems (such as making the FEF-3 skid). To avoid that, I deliberately reduced the tractive effort of 8444. So, you get some help from the helper when the throttle of 844 is open (or more precisely, when the "regulator" - which is actually the amount of steam in the steam chest - value rises). but not too much. The main benefit of the m.u. controller is that the sound coming from 8444 is correct for the notch that you've selected, so you get the sense of immersion and it feels as though you're controlling the diesel." - Smokebox

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